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Mercedes-Benz S500 Automobile User Manual
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1. Figure 3 Sample Block Diagram for MINA Array System MINA OPERATING INSTRUCTIONS Compensate for air absorption at high frequencies with each section having unique correction settings appropri ate for the distance of the intended coverage Manage low frequency build up in the array by applying the same low frequency correction settings across multi ple zones Optimize subwoofer integration with low and high pass filters with minimal phase Use robust line outputs to drive loudspeakers over lengthy cable runs i NOTE The block diagram shown in Figure 3 shows just one method of driving MINA line arrays with subwoofers This example is not meant to be a template for your system design which should always be tailored to the acoustical characteristics physical constraints audio content audience and other relevant factors for your project RIGHT CLUSTER 8 MINAs LEFT SUBWOOFERS 3 500 HPs RIGHT SUBWOOFERS 3 500 HPs 25 CHAPTER 4 LINE ARRAYS AND SYSTEM INTEGRATION USING DIGITAL SIGNAL PROCESSORS BA NOTE While Meyer Sound strongly recom mends using the Galileo loudspeaker manage ment system to dr
2. m Maximum Long Term Continuous Current The maximum rms current during a period of at least 10 sec onds The Maximum Long Term Continuous Current is used to calculate temperature increases for cables to ensure that cable sizes and gauges conform to electrical code standards The current rating is also used as a rat ing for slow reacting thermal breakers Burst Current The maximum rms current during a period of around one second The Burst Current is used as a rating for magnetic breakers It is also used for cal culating the peak voltage drop in long AC cable runs according to the following formula 15 CHAPTER 2 POWER REQUIREMENTS V pk drop I pk x R cable total The Burst Current can also be used to calculate the AC looping capability of MINA Ultimate Short Term Peak Current A rating for fast m reacting magnetic breakers m Inrush Current The spike of initial current encoun tered when powering on You can use the following table as a guide for selecting cable gauges and circuit breaker ratings for the system s operating voltage MINA Current Draw Current Draw 115 V AC 230 V AC 100 V AC 0 256 Arms 0 249 Arms 0 284 Arms 284 Arms Idle Idle Current be Long Term 1 26 Arms 0 66 Arms 1 50 kend rms Continuous Current Burst Burst Current 3 24 A rms 1 74 A rms 4 4 02 Arms Arms Ultimate foi Term 10 4 A peak 5 2 A peak 11 1 Eet peak Peak Current Inrush Current 16
3. MTF M ELODIE MINA TRANSITION FRAME When using MINA for downfill in M elodie arrays the MTF M elodie MINA transition frame links the bottom M elodie to the top MINA The transition frame can also transition from 500 HP subwoofers fitted with rigging frames to MINA in flown and groundstacked arrays BA NOTE For complete information on configura tion and load ratings for the MTF M elodie MINA as well as for other rigging accessories refer to the MG MINA Assembly Guide PN 05 207 101 01 available at www meyersound com MTF M elodie MINA with Flown 500 HPs and MINAs MTF M elodie MINA with Flown M elodies and MINAs The MTF M elodie MINA transition frame includes the required quick release pins and links for the following transi tions m Melodies flown with MINAs below m 500 HPs flown with MINAs below MTF M elodie MINA with Groundstacked 500 HPs and MINAs m 500 HPs groundstacked with MINAs above CAUTION Always use the quick release pins included with the MTF M elodie MINA transi tion frame to secure loudspeakers to the frame Do not use the quick release pins included with MINA in the frame as they are shorter and will not lock in place 33 CHAPTER 5 QUICKFLY RIGGING MYA MINA MOUNTING YOKE The MYA MINA mounting yoke flies up to three MINA loud speakers from a single hanging point using a C clamp or equivalent The yoke includes two bracketing options the MPA 2 for attachi
4. Chapter 2 Power Requirements AC Connectors Wiring for AC Connections AC Power Distribution MINA Voltage Requirements MINA Current Requirements Electrical Safety Issues Chapter 3 Amplification and Audio Audio Connectors Internal connections Cabling Limiting On Temp LED Chapter 4 Line Arrays and System Integration About Line Arrays MINA Curvilinear Arrays System Design Principles Optimizing and Equalizing Arrays Compensating for Latency when Integrating MINA Loudspeakers Using MINA Loudspeakers for Sidefill and Downfill in M 7ELODIE Arrays Galileo Loudspeaker Management System Using Digital Signal Processors Integrating Subwoofers with MINA Loudspeaker Systems Chapter 5 QuickFly Rigging MINA GuideALinks MG MINA Grid MTF M elodie MINA Transition Frame MYA MINA Mounting Yoke MUB MINA U Bracket Floor and Pole Mounting MINAs with the MYA MINA MCF MINA Caster Frame Chapter 6 RMS Remote Monitoring System RMS Software RMS Module Chapter 7 System Design and Integration Tools MAPP Online Pro SIM 3 Measurement System 13 13 14 14 15 15 16 17 17 18 18 18 18 21 21 21 22 22 24 24 24 26 26 29 29 31 33 34 35 36 36 39 39 40 43 43 44 CONTENTS vi Appendix A Optional Rain Hood Appendix B MINA Specifications 45 47 CHAPTER 1 INTRODUCTION HOW TO USE THIS MANUAL Make sure to read these operating instructions in their entirety befo
5. Java based application for accurately predicting the coverage pattern frequency response impulse response and maximum SPL output of single or arrayed Meyer Sound loudspeakers Residing on your local computer the MAPP Online Pro client lets you configure Meyer Sound loudspeaker systems and define the environment in which they will operate including air temperature pressure humidity and even the location and composition of walls CAD DXF files containing detailed venue information can also be imported MAPP Online TM mapponline1 csy File Edit View Configure Tools Help Y meters T a v K 53 a E st X meters Pressure Relative Humidity Relative Bandwidth Center Frequency Start Frequenc 20 0 1 013 25 60 0 1 4 000 2 832 SC millipars octave Hz MAPP Online Pro Whether planning for fixed installations or tours with multiple venues sound system designers can use MAPP Online Pro to accurately predict the appropriate loudspeaker deploy ment for each job complete with coverage data system delay and equalization settings rigging information and detailed design illustrations MAPP Online Pro s accurate high resolution predictions ensure that systems will perform as expected thereby eliminating unexpected coverage problems and minimizing on site adjustments The key to the accuracy of MAPP Online Pro s predictions is its exhaustive database of M
6. 2 Adapter and Two MINAs CAUTION When mounting the MYA MINA on a pole make sure the pole and pole mount adapter have been rated to support the full weight of the yoke and loudspeakers Observe all safety pre cautions specified by the pole and pole mount adapter manufacturer MUB MINA U BRACKET The MUB MINA U bracket was primarily designed for aim ing a single MINA loudspeaker in floor and ceiling mount configurations However the U bracket is strong enough to fly arrays of up to three cabinets or stack up to two cabinets in floor and pole mount configurations The U bracket can MINA OPERATING INSTRUCTIONS also be flown from trusses using C clamps or equivalent For flying and groundstacking larger arrays the MG MINA grid is recommended for applications requiring continuous adjustability or greater downtilt and uptilt angles the MYA MINA mounting yoke is recommended BA NOTE For complete information on configura tion and load ratings for the MUB MINA as well as for other rigging accessories refer to the MG MINA Assembly Guide PN 05 207 101 01 avail able at www meyersound com Ceiling Mounted MUB MINA with One MINA The MUB MINA U bracket s mounting holes and mounting slot provide maximum flexibility for the loudspeaker s uptilt and downtilt For flown applications the MUB MINA can be oriented for either maximum downtilt with the slot near the front of the loudspeakers or maximum uptilt with the
7. 8 A peak 20 0 Apeak 15 0 A peak The minimum electrical service amperage required by a MINA loudspeaker system is the sum of the Maximum Long Term Continuous Current for each loudspeaker An addi tional 30 percent above the minimum amperage is recom mended to prevent peak voltage drops at the service entry Cli NOTE For best performance the AC cable voltage drop should not exceed 10 V or 10 percent at 115 V and 5 percent at 230 V Make sure that even with AC voltage drops that the AC voltage always remains within the operating win dows 8 E E 16 ELECTRICAL SAFETY ISSUES Pay close attention to these important electrical and safety issues MINA requires a grounded outlet Always use a grounded outlet and plug Earth ground Chassis ground Do not use a ground lifting adapter or cut the AC cable ground pin OC Do not exceed the current capability of the 20 amp AC Input connector for the loudspeaker When looping loud speakers consider the total current draw for all loud speakers on the circuit including the first loudspeaker Make sure the AC power cable for the loudspeaker has the appropriate power plug on the other end for the area in which you will operate the loudspeaker In addi tion the AC power cable must be rated for the total cur rent draw of all loudspeakers looped from the power source Do not operate the unit if its power cable is frayed or bro ken Keep all liquids awa
8. Secure the rain hood to the user panel by inserting the rain hood s quick clips in the two bottom holes Insert the clips all the way so they lock 5 Secure the rain hood to the user panel by inserting the rain hood s wing head studs in the two bottom holes Press firmly to compress the rain hood s gasket and turn clockwise one quarter turn Make sure the studs are fully inserted rotated and locked 45 APPENDIX A OPTIONAL RAIN HOOD 46 APPENDIX B MINA SPECIFICATIONS ACOUSTICAL Operating Frequency Range 66 Hz 18 kHz Note Recommended maximum operating frequency range Response depends on load ing conditions and room acoustics Frequency Response 70 Hz 17 5 kHz 4 dB Note Measured free field with 1 3 octave frequency resolution at 4 meters Phase Response 1 kHz to 18 kHz 30 Maximum Peak SPL 128 dB Note Measured with music referred to 1 meter Dynamic Range gt 110 dB Vertical Coverage Varies depending on array length and configuration Crossover 760 Hz Note At this frequency the transducers produce equal sound pressure levels TRANSDUCERS Low and Low Mid Two 6 5 cone drivers with neodymium magnets Frequency Nominal impedance 4Q Voice coil size 1 5 High Frequency One 3 compression driver Nominal impedance 8 Q Voice coil size 3 Diaphragm size 3 Exit size 1 2 AUDIO INPUT Mode Range Wiring Pin 1 Chassis earth through 1 KO 1000 pF 15 V clamp n
9. approaching the rear of the loudspeaker MINA OPERATING INSTRUCTIONS 19 CHAPTER 3 AMPLIFICATION AND AUDIO 20 CHAPTER 4 LINE ARRAYS AND SYSTEM INTEGRATION ABOUT LINE ARRAYS Line arrays achieve directivity through constructive and destructive interference For example consider one loud speaker with a single 12 inch cone radiator in an enclosure The loudspeaker s directivity varies with frequency when the wavelengths reproduced are larger than the driver at low frequencies it is omnidirectional as the frequency increases and the wavelength is comparable to the size of the driver directivity narrows Above around 2 kHz it becomes too narrow for most applications which is why practical system designs employ crossovers and multiple elements to achieve controlled directivity across the audio band Stacking two of these loudspeakers one on top of the other and driving both with the same signal results in a different radiation pattern At common points on axis there is con structive interference and sound pressure increases by 6 dB relative to a single unit At other points off axis path length differences produce cancellation resulting in a lower sound pressure level In fact if you drive both units with a sine wave there will be points where the cancellation is complete which can be shown in an anechoic chamber This destructive interference is sometimes referred to as combing A typical line array is comprise
10. appropriate for the surface where the loudspeaker will be installed m Make sure bolts and eyebolts are tightened securely Meyer Sound recommends using Loctite on eyebolt threads and safety cables m Inspect mounting and rigging hardware regularly Imme diately replace any worn or damaged components MINA GuideALinks Each MINA loudspeaker is equipped with four captive GuideALinks that link to adjacent units in flown and ground stacked arrays Located at the bottom corners of the end plates the GuideALinks extend and retract with Knobs and are secured with quick release pins MINA GuideALinks with Quick Release Pins When linking MINAs two quick release pins are required for each GuideALink one to secure the position of the link in the top unit and one to secure the link to the linked bottom unit Eight 1 4 by 0 53 inch quick release pins are included with each MINA CAUTION Make sure to secure the MINA GuideALinks with the included quick release pins GuideALink knobs are for extending and retract ing the links and should not be used to support the weight of the loudspeaker when fully extended with out the pins 29 CHAPTER 5 QUICKFLY RIGGING Front GuideAlinks The label in the lower left corner of the end frame shows the splay angle for the GuideALink position With the knob at the bottom the splay angle is O degrees As the knob is moved up the angle increases all the way to 11 degrees To stow the
11. br St es oS WN Do not block any ventilation openings Install in accor dance with Meyer Sound s installation instructions 8 Do not install near any heat sources such as radiators heat registers stoves or other apparatus that produce heat 9 Do not defeat the safety purpose of the grounding type plug A grounding type plug has two blades and a third grounding prong The third prong is provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the loudspeaker The AC mains plug or appliance coupler shall remain readily accessible for operation 11 Only use attachments accessories specified by Meyer Sound 12 If applicable use only with the caster rails or rigging specified by Meyer Sound or sold with the loudspeaker Handles are for carrying only d CAUTION Rigging should only be done by experienced professionals 13 Unplug this loudspeaker during lightning storms or when unused for long periods of time 14 Disconnect the mains plug before disconnecting the power cord from the loudspeaker 15 Refer all servicing to qualified service personnel Servic ing is required when the loudspeaker has been damaged in any way such as when the power supply cord or plug has been damaged liquid has bee
12. captive GuideALinks allow cabinets to be linked at various splay angles for flying groundstacking and transport The heavy duty GuideALinks allow for easy adjustment of array tilts eliminating the need for pull black straps in flown configura tions M6 attachment points provide connections to the optional MYA MINA mounting yoke and MUB MINA U bracket This chapter gives an overview of MINA rigging options and rigging accessories For complete information on rigging hardware including configuration and load ratings refer to the MG MINA Assembly Guide PN 05 207 101 01 available at www meyersound com Important Safety Considerations When installing Meyer Sound loudspeakers and subwoof ers the following precautions should always be observed m All Meyer Sound products must be used in accordance with local state federal and industry regulations It is the owner s and user s responsibility to evaluate the reli ability of any rigging method for their application Rigging should only be carried out by experienced professionals m Use mounting and rigging hardware that has been rated to meet or exceed the weight being hung m Make sure to attach mounting hardware to the building s structural components studs or joists and not just to the wall surface Verify that the building s structure and the anchors used for the installation will safely support the total weight of the mounted loudspeakers m Use mounting hardware
13. consider adding more loudspeakers to the system ON TEMP LED During normal operation MINA s On Temp LED is green If the loudspeaker s internal temperature reaches 75 C 167 F the LED turns solid yellow and the loudspeaker s gain is reduced by 3 dB Though MINA will continue to oper ate normally with the lower gain when the On Temp LED is yellow this is an indication that the loudspeaker is reaching its maximum heat dissipation and a reduction in SPL is rec ommended When the loudspeaker s internal temperature cools to 60 C 140 F the amplifier returns to normal oper ation CAUTION If the loudspeaker s internal tem perature reaches 125 C 257 F gain is reduced by 6 dB to avoid damage to the loud speaker TIP When MINA is connected to an RMS net work the RMS software provides additional feedback on the loudspeaker s operating tempera ture For more information see Chapter 6 RMS Remote Monitoring System Amplifier Cooling System MINA s amplifier relies solely on natural convection for cool ing from air flowing over its heat sink The efficient design of the amplifier and heat sink profile keeps temperatures low even when the unit is used at high ambient temperatures in tightly packed conditions and when driven continuously at high output levels CAUTION The MINA heat sink can reach tem peratures of up to 85 C 185 F during extreme operation Use extreme caution when
14. for frontfill or under balcony coverage with up to 20 degrees of tilt or floor or pole mounts up to two cabinets pole mount adapter not included 1 OOA MUB MINA U Bracket with One MINA e R I D eh l ee OR A FEEF fo ppeekeo tit ya ue r ect _ U Truss Mounted MUB MINA with Three MINAs For most applications Meyer Sound s 500 HP subwoofer is the logical choice for enhancing low frequencies in MINA loudspeaker systems The 500 HP can be flown or ground stacked with MINA arrays using the optional MTF M elodie MINA transition frame For applications requiring more low frequency headroom Meyer Sound s 600 HP and 700 HP subwoofers are ideally suited for integration with MINA sys tems MTF M elodie MINA Transition Frame with Groundstacked 500 HPs and MINAs MTF M elodie MINA Transition Frame with Flown 500 HPs and MINAS For portable applications the optional MCF MINA caster frame conveniently transports up to five fully rigged MINA cabinets Caster dimensions are suitable for tightly packed transports in both U S and European trucks Durable nylon covers sized for stacks of three four and five units are also available to ensure the MINA is completely road ready MCF MINA Caster Frame with Stack of Five MINAs 11 CHAPTER 1 INTRODUCTION 12 CHAPTER 2 POWER REQUIREMENTS Self powered and ultracompact MINA loudspeakers com bine advanced loudspeaker technology w
15. link the knob is moved all the way to the top of the slot The front GuideALinks act as a pivot point between linked MINAs with the splay angle between the units determined by the rear GuideALink positions When stowing front GuideALinks the knob is positioned at the top of the slot GuideALink label Front GuideALinks Rear GuideAlinks Quick release pin The rear GuideALinks permit splay angles between linked Rear GuideALink Label and Pinning Positions MINAs at 0 0 0 5 and 1 11 degrees in 1 degree incre ments The rear GuideALink includes three rows of holes corresponding to the available splay angles Figure 4 that are secured in one of three pinning positions at the bottom of the unit 2 oi me Rear GuideALinks Stowed Figure 4 Rear GuideALink Splay Angles for Linked MINAs BA NOTE The splay angles listed on the GuideALink label are for relative angles between the linked units For example setting the GuideALink to 5 yields a 5 degree downtilt of the lower unit to the upper unit How the loudspeakers relate to the floor stage and seating angles in the venue depends on the orientation of the MG MINA grid the angles of the loudspeakers in the array 30 above them whether they are flown or ground stacked and other factors MAPP Online Pro is rec ommended for determining the optimum splay angles for loudspeakers and coverage pattern of the array BA NOTE Optimal acoustica
16. maxi mum uptilt for the flown array when tilting the grid The label on the MG MINA shows this configuration as Maxi mum Uptilt 5 10 MG MINA Grid Maximum Uptilt Orientation 5 and 10 Degrees With the maximum uptilt orientation the MINA at the top of the array can be attached to the grid at 5 and 10 degree downtilt TIP The tilt for the MG MINA and the array hung below it can be further tilted by using chain motors or differing lengths of steel or SpanSets 32 Groundstacking MINAs with the MG MINA The MG MINA grid can also be used for groundstacking up to six MINAs When used for groundstacking the grid should be oriented so the center of gravity for the stacked loudspeakers is near the center of the grid The MINA at the bottom of the stack attaches directly to the grid with its GuideALinks and is secured with the quick release pins included with the grid The configuration of the GuideALinks for the attached MINA determines its tilt which can be from 6 degrees uptilt to 5 degrees downtilt MG MINA MG MINA Grid with Groundstacked MINA DI cp 45 Stowed Figure 5 MINA Rear GuideALink Angles for Groundstacked Units d CAUTION To secure groundstacked arrays particularly in outdoor situations use tie downs or weights with the grid and or a safety system on the array MINA OPERATING INSTRUCTIONS
17. sec onds so long as the voltage has returned to its normal oper ating window If MINA does not power up after 10 seconds remove AC power immediately and contact Meyer Sound Technical Support CAUTION The power source for MINA should always operate within the required voltage range at least a few volts from the upper and lower ranges This will ensure that AC voltage variations from the service entry or peak voltage drops due to cable runs will not cause the loudspeaker s amplifiers to cycle on and off or cause damage to the power supply BA NOTE When voltage fluctuates within MINA s operating range automatic tap selection stabi lizes the operating voltage This tap selection is instantaneous with no audible artifacts BA NOTE Since MINA does not require a dedi cated neutral line and it can tolerate elevated voltages from the ground line it can be connected to line line terminals in 120 V 3 phase Wye systems This results in 208 V AC between lines nominal and therefore draws less current than when using 120 V AC line neutral Make sure that the voltage remains within MINA s recommended operating window 100 264 V AC The ground line must always be used for safety reasons and the line to ground voltage should never exceed 264 V AC typically 120 V AC from line to ground MINA OPERATING INSTRUCTIONS Powering Up MINAs When AC power is applied to MINA its Intelligent AC power supply automatically s
18. slot near the rear of the loudspeakers m For a single flown cabinet the MUB MINA supports con tinuos angles of 0 to 20 degrees in the maximum down tilt orientation and angles of 10 to 10 degrees in the maximum uptilt orientation m For multiple flown cabinets the MUB MINA supports fixed angles of 10 0 5 10 and 20 degrees with either orientation BA NOTE For multiple flown cabinets the MUB MINA slot is not recommended for vari able adjustments since the angle could change over time due to the weight of the cabinets BA NOTE For illustrations showing which MUB MINA mounting holes and slot configura tions to use to achieve specific angles refer to the MG MINA Assembly Guide PN 05 207 101 01 avail able at www meyersound com 35 CHAPTER 5 QUICKFLY RIGGING FLOOR AND POLE MOUNTING MINAS WITH THE MYA MINA Up to two MINA loudspeakers can be floor or pole mounted with the MUB MINA mounting yoke For floor and pole mounted applications the MUB MINA can be oriented for either maximum downtilt with the slot near the rear of the loudspeakers or maximum uptilt with the slot near the front of the loudspeakers m For a single floor or pole mounted cabinet the MUB MINA supports continuos angles from 10 to 10 degrees in the maximum downtilt orientation and angles of O to 20 degrees in the maximum uptilt orientation m For multiple floor or pole mounted cabinets the MUB MINA supports fixed
19. spaces MINA integrates seamlessly with other members of the MILO family partnering naturally with M elodie and MICA MTF M elodie MINA Transition Frame with M elodies and MINAs The MTF M elodie MINA transition frame integrates MINAs in M elodie arrays for downfill flies MINA arrays under 500 HP subwoofers and groundstacks MINAs on top of 500 HPs MINA OPERATING INSTRUCTIONS When used in large arrays typically as a main loudspeaker The MG MINA grid flies up to 12 MINA cabinets with a 7 1 system MINA can be flown with the optional MG MINA grid safety ratio or up to 16 MINA cabinets with a 5 1 safety MINA s end plates include captive GuideALinks and ratio The grid offers multiple and single center pickup quick release pins that allow splay angles between cabinets points and can also be used for groundstacking to be readily adjusted The end plates also include attach ment points for the MYA MINA mounting yoke and MUB MINA U bracket for mounting single cabinets and small numbers of cabinets typically for fill applications and small main systems MG MINA Grid with Groundstack of Six MINAs MG MINA Grid with Array of Eight MINAs The MYA MINA mounting yoke suspends arrays of up to three MINA cabinets from a single point or pole mounts up to two cabinets pole mount adapter not included Fe DogA Pole Mounted MYA MINA with Two MINAS 10 The MUB MINA U bracket mounts up to three cabinets
20. system is available in two hardware configurations m The Galileo 616 is a two space rack unit with six inputs and 16 low latency outputs Processing for the outputs includes gain polarity delay high and low pass filters equalization parametric and TruShaping and atmo spheric correction Galileo 616 m The Galileo 408 shares the same 24 bit 96 kHz audio quality and 32 bit floating point internal processing as the Galileo 616 though with fewer inputs and outputs Galileo 408 All system parameters for the Galileo 616 and Galileo 408 can be configured from the extensive Compass software running on a Windows or Mac computer The Galileo 616 can also be configured from its intuitive front panel controls The Galileo system interfaces seamlessly with Meyer Sound s SIM 3 audio analyzer TIP Galileo presets optimized for MINA loud speaker systems are available at www meyer sound com Driving and Optimizing MINA Arrays with Galileo Processors The Galileo loudspeaker management system can effec tively drive MINA line arrays with the following capabilities m Divide arrays into zones LEFT CLUSTER 8 MINAs GALILEO 408 Main Left Main Right Subwoofers optional OUT 1 OUT 2 OUT 3 OUT 4 OUT 5 OUT 6 OUT 7 OUT 8
21. the MG MINA grid to secure its links as well as to secure groundstacked MINAs to the grid Do not use the quick release pins included with MINA in the grid as they are shorter and will not lock in place TIP The MG MINA grid can travel installed on top of MINA stacks MG MINA Grid Orientations for Flown Configurations The orientation of the MG MINA grid determines the maxi mum downtilt and maximum uptilt for flown arrays MG MINA Oriented for Maximum Array Downtilt When the MG MINA grid is oriented with the links toward the front of the flown loudspeakers the grid provides maxi mum downtilt for the flown array when tilting the grid The label on the MG MINA shows this configuration as Maxi mum Downtilt stow MG MINA p o S 1 2 FE e 4 re Eeer L i V 0 J H ES jai e T ae m OL SC NZ e ae MG MINA Grid Maximum Downtilt Orientation 0 and A Degrees With the maximum downtilt orientation the MINA at the top of the array can be attached to the grid at 0 and 5 degree downtilt 31 CHAPTER 5 QUICKFLY RIGGING TIP The tilt for the MG MINA and the array hung below it can be further tilted by using chain motors or differing lengths of steel or SpanSets MG MINA Oriented for Maximum Array Uptilt When the MG MINA grid is oriented with the links toward the rear of the flown loudspeakers the grid provides
22. transition frame a delay of 1 8 ms should be added to the 500 HP signal When integrating MINAs as separate arrays use MAPP Online Pro to deter mine appropriate delay settings BA NOTE A measurement system such as Meyer Sound s SIM 3 should be used to determine appropriate delay and polarity settings Integrating 600 HP and 700 HP Subwoofers MINA arrays can be deployed with Meyer Sound s 600 HP or 700 HP subwoofers in applications where high SPL is necessary or the program content requires additional low frequency headroom The 600 HP extends frequency response to 39 Hz while the 700 HP extends frequency response to 30 Hz These subwoofers can be flown in straight arrays next to MINA arrays using optional rigging hardware for the 600 HP the MRF 600 rigging kit and MG MICA multipur pose grid for the 700 HP the MRK 700 rigging kit and MTG 700 top grid BA NOTE A measurement system such as Meyer Sound s SIM 3 should be used to determine appropriate delay and polarity settings BA NOTE For more information on integrating subwoofers with MINA refer to the MINA Sys tem Startup Guide PN 05 207 100 01 available at www meyersound com MINA OPERATING INSTRUCTIONS 2 7 CHAPTER 4 LINE ARRAYS AND SYSTEM INTEGRATION 28 CHAPTER 5 QUICKFLY RIGGING MINA loudspeakers are compatible with Meyer Sound s QuickFly rigging system a comprehensive collection of rig ging flying and mounting hardware MINA s
23. MILO sound characterized by extended high frequency response and an even wider 100 degree horizontal coverage MINA was conceived for small footprint high power curvilinear arrays Configurations of eight or more cabinets can comfortably cover up to 130 feet 40 m and are an excellent compact solution for applica tions not requiring the power of larger systems comprised of M elodies and MICAs A myriad of MINA array configura tions are possible to suit each venue s needs with additional cabinets and adjustable splay angles able to contour the system s high frequency vertical coverage and low fre quency directivity Entire MINA systems can be designed with Meyer Sound s MAPP Online Pro effectively anticipat ing coverage needs MINA includes two 6 5 inch cone drivers and one 3 inch compression driver mounted on an acoustical manifold cou pled to a low distortion 100 degree horizontal constant directivity horn The close proximity of the cone drivers to each other as well as to the high frequency horn allows them to operate in parallel over their full frequency range to deliver the greatest acoustic output The optimal driver placement extends MINA s remarkably consistent 100 CHAPTER 7 INTRODUCTION degree horizontal polar pattern below 500 Hz The acousti cal manifold based on Meyer Sound s patented REM rib bon emulation technology radiates driver output with very low distortion and a focused well behaved nar
24. OPERATING INSTRUCTIONS M SERIES MINA ili y Compact Curvilinear Array Loudspeaker a U fA Meyer li Sound Keep these important operating instructions Check www meyersound com for updates DECLARATION OF CONFORMITY ACCORDING TO ISO IEC GUIDE 22 AND EN 45014 Manufacturer s Name Meyer Sound Laboratories Inc Manufacturer s Address 2832 San Pablo Avenue Berkeley CA 94702 2204 USA Declares that the product Product Names MINA Compact Curvilinear Loudspeaker Product Options All Conforms to the following Product Specifications Safety EN 60065 2002 Supplementary Information The product herewith complies with the requirements of the Low Voltage Directive LVD 2006 95 EC and the EMC Directive 2004 108 EC Signature Ms Margie Garza Director of Quality Meyer Sound Laboratories Inc Berkeley California 94702 USA Issued October 27 2010 European Contact Your local Meyer Sound dealer or Meyer Sound Germany GmbH 2010 Meyer Sound All rights reserved MINA Operating Instructions PN 05 207 005 01 A The contents of this manual are furnished for informational purposes only are subject to change without notice and should not be con strued as a commitment by Meyer Sound Laboratories Inc Meyer Sound assumes no responsibility or liability for any errors or inaccura cies that may appear in this manual Except as permitted by applicable copyright law no part of this publication may be reproduced stored in a
25. angles of 0 5 and 10 degrees with either orientation Pole Mounted MUB MINA with Two MINAs CAUTION When mounting the MUB MINA on a pole make sure the pole and pole mount adapter have been rated to support the full weight of the U bracket and loudspeakers Observe all safety precautions specified by the pole and pole mount adapter manufacturer BA NOTE For illustrations showing which MUB MINA mounting holes and slot configura tions to use to achieve specific angles refer to the MG MINA Assembly Guide PN 05 207 101 01 avail able at www meyersound com 36 MCF MINA CASTER FRAME The MCF MINA caster frame safely supports up to five MINAs for transport and groundstacking making it easy to assemble or disassemble arrays The caster frame s sturdy construction allows it be conveniently moved with forklifts i NOTE For complete information on the MCF MINA as well as for other rigging acces sories refer to the MG MINA Assembly Guide PN 05 207 101 01 available at www meyer sound com MCF MINA Caster Frame The MINA at the bottom of the stack attaches securely to the caster frame with its GuideALinks and is secured with the four 1 4 by 0 90 inch quick release pins included with the caster frame The configuration of the GuideALinks for the attached MINA determines its tilt which can be from 6 degrees uptilt to 5 degrees downtilt CAUTION Always use the quick releas
26. as the neutral and line cables BA NOTE Improper grounding of connections between loudspeakers and the rest of the audio system may produce noise or hum or cause serious damage to the input and output stages of the system s electronic components A N CAUTION Before applying AC power to any Meyer Sound self powered loudspeaker make sure that the voltage potential difference between the neutral and earth ground lines is less than 5 V AC Figure 1 illustrates a basic three phase AC distribution sys tem with the loudspeaker load distributed across the three phases All loudspeakers are connected to common neutral and earth ground lines Line 1 Line 2 Line 3 Neutral Earth Ground Figure 1 AC Power Distribution System MINA VOLTAGE REQUIREMENTS MINA operates safely and continuously when the AC voltage stays within 100 264 V AC at 50 or 60 Hz The loudspeaker can withstand continuous voltages up to 275 volts and allows any combination of voltage to GND neutral line ground or line line ground If the voltage drops below 90 V brownout MINA uses stored power to continue operating temporarily the loud speaker shuts down if the voltage does not rise above the low boundary before the stored power is used If the voltage rises above 275 V the power supply immedi ately shuts off to prevent damage to the unit If MINA shuts down due to either low or high voltage its power supply automatically powers up again after three
27. assigned a node name during a one time commissioning procedure where the loudspeaker is identi fied by either entering its unique Neuron ID or by pressing its Identify button Add Loudspeaker Required Properties Device Names used Device Names in the on this Panel Network Database s RMSNET Enter a unique Network Device Name ISS Device Name up to 8 characters Speaker Title MINA 4 Enter up to 12 characters for a speaker title Optionally Enter Network Properties Below Network RMSNET DI Neuron ID o 23456789ab 3 12 characters Firmware Luet D 6 to 8 characters Cancel RMS Add Loudspeaker Dialog Box Unlimited Device Credits Once loudspeakers are identified on the RMS network they appear in the RMS software as icons and views they are also automatically added to the RMS database on the host computer Temperature 23 pk 40 Wpk amp 53C input fi 2 Yave Uz Limit fi 4 Yok piri 61 1 YOC lo 26Vpk 190 we fl e Vave o 2 Limit unregulated o supply 26 Vok 180 Wok De Vave o 2 Limit fonline emmmer C3 Im mute solo wink close MINA RMS Icon 39 CHAPTER 6 RMS REMOTE MONITORING SYSTEM The RMS software displays all loudspeakers on the network in a panel with icons Meter views and Text views that can be customized to suit your needs Loudspeaker data is updated 2 5 times per second Individual loudspeakers can be physically iden
28. be maintained for all low frequency filters for the array Different low frequency equalization settings within the same array will degrade the desired coupling effect For the same reason severe gain tapering is not recom mended for arrays since adjusting various zones with an overall amplitude control for each results in the following m The length of the array is effectively shortened m Directivity decreases at low frequencies m Low frequency headroom decreases Figure 2 shows a series of MAPP Online Pro plots for a MINA array Note that small vertical splay angles in the upper part of the array cover longer distances while greater angles in the lower elements increase vertical coverage for shorter distances BA NOTE For more information on optimizing and equalizing MINA arrays refer to the MINA Sys tem Startup Guide PN 05 207 100 01 available at www meyersound com MINA OPERATING INSTRUCTIONS Amplitude cap Figure 2 Mapp Online Pro Plots Showing Directivity 23 CHAPTER A LINE ARRAYS AND SYSTEM INTEGRATION COMPENSATING FOR LATENCY WHEN INTEGRATING MINA LOUDSPEAKERS Because MINA loudspeakers use onboard digital amplifica tion a very small amount of latency is introduced to the audio signal when converting from analog to digital and dig ital to analog When using MINA loudspeakers with other MINA loudspeakers this has no effect on system perfor mance However
29. ble parts Repairs should be performed only by factory trained service personnel Francais Pour r duire le risque d lectrocution d brancher la prise principale de baut parleur avant d installer le cable d inter face allant a laudio Ne rebrancher le bloc d alimentation Ou apres avoir effectu toutes les connections Branchez haut parleur dans une prise de courant a 3 d rivations deux pdles et la terre Cette prise doit tre munie d une protection ad quate fusible ou coupe circuit Le branchement dans tout autre genre de prise pourrait entrainer un risque d lectrocution et peut constituer une infraction a la r gle mentation locale concernant les instal lations lectriques Ne pas installer l haut parleur dans un endroit ou il y a de l eau ou une humid it excessive Ne pas laisser de l eau ou tout objet p n trer dans haut parleur Ne pas placer de rcipients contenant un liquide sur cet appareil ni a proximit de celui Ci Pour viter une surchauffe de haut parleur conserver la a labri du soleil Ne pas installer a proximit d appareils d gageant de la chaleur tels que radia teurs ou appareils de chauffage Ce haut parleur contient des circuits haute tension pr sentant un danger Ne jamais essayer de le d monter Il n y a aucun composant qui puisse tre r par par utilisateur Toutes les r pa rations doivent tre effectu es par du personnel quali
30. d of a line of loudspeakers carefully spaced so that constructive interferences occur on axis with the array and destructive interferences comb ing are aimed to the sides While combing has traditionally been considered undesirable line arrays use combing for positive effect to control directivity MINA CURVILINEAR ARRAYS Each MINA loudspeaker employs two low frequency cone radiators and one high frequency horn To achieve optimal results it is important to understand how these components work together High Frequencies For high frequencies MINA uses a very precise Constant Q horn developed using Meyer Sound s anechoic chamber which provides a consistent beamwidth of coverage in the horizontal plane In the horizontal pattern of a MINA array the horns work to produce a wide 100 degree coverage in the vertical pattern however Meyer Sound s REM technology provides narrow coverage to m Minimize destructive interference between adjacent ele ments m Promote coupling to throw longer distances As more elements are arrayed in a vertical column energy is more effectively projected through coupling The amount of energy projected can be controlled by altering the splay angles between elements m Wide angles yield more vertical coverage m Narrow angles yields narrower vertical coverage allow ing the focused energy to achieve longer throws Mid to Low Frequencies The directional control of the array in th
31. e mid to low frequen cies depends on the length of the array number of ele ments Directional control is achieved when the length of the array is similar or larger than the wavelength of the frequencies reproduced by the array As frequencies get lower and wavelengths longer the number of cabinets employed has a critical effect on the directional control The more MINA loudspeakers that are used the more directional the vertical beamwidth becomes at lower frequencies However at low frequencies the splay angle between cabinets has little effect since the total length is not modified substantially 21 CHAPTER A LINE ARRAYS AND SYSTEM INTEGRATION SYSTEM DESIGN PRINCIPLES Line array designs seek to achieve the following m Uniform vertical coverage m Uniform SPL m Uniform frequency response m Sufficient SPL and headroom for the application To achieve these objectives fine tuning a design for MINA arrays is dependent on three factors Number of Array Elements For smaller arrays the number of elements affects the SPL and headroom avail able from the system as well as the uniformity of cover age in both SPL and frequency response The number of elements affects directivity at lower frequencies m Vertical Splay Angles Changing the splay angles between cabinets significantly impacts vertical coverage for high frequencies with narrower vertical splay angles producing a higher Q vertical beamwidth and wider splay ang
32. e pins included with the MCF MINA caster frame to secure groundstacked MINAs to the grid Do not use the quick release pins included with MINA in the frame as they are shorter and will not lock in place MINA OPERATING INSTRUCTIONS Safety Guidelines for the MCF MINA Caster SE j Frame m Do not stack more than five MINAs m Avoid moving stacks in the front to back direction of the L 3 MINAs the long side always move stacks sideways to avoid tipping o oo ER oO oo OC g 2 QQ oo OO CH MCF MINA Caster Frame with MINA Stack TIP The MG MINA grid can travel installed on top of MINA stacks TIP Durable nylon covers sized for stacks of 3 m When transporting a non curved MINA stack with 4 and 5 units are available to ensure the MINA 0 degree splay angles configure the rear GuideALinks is completely road ready for the bottom MINA so it is attached to the caster frame at O degrees using the 5 degree hole in the MINA GuideALinks m When transporting a curved MINA stack with wide splay angles configure the rear GuideALinks for the bottom MINA so it is attached to the cas
33. eakers is 1000 ohms 10 KOhms 10 To drive this number of looped loudspeak ers the source device should have an output impedance of 100 ohms or less This same rule applies when looping MINA loudspeakers with other self powered Meyer Sound loudspeakers and subwoofers BA NOTE Most source devices are capable of driving loads no smaller than 10 times their output impedance TIP Meyer Sound s Galileo loudspeaker management system is highly recommended for driving systems with multiple loudspeakers In addi tion to maintaining signal integrity for long cable CHAPTER 3 AMPLIFICATION AND AUDIO paths Galileo systems offer independent inputs and outputs and presets for optimizing MINA array perfor mance and subsystem integration INTERNAL CONNECTIONS Meyer Sound loudspeakers are tested and shipped from the factory with their drivers in correct alignment If a driver needs to be replaced make sure the replacement is installed with the correct polarity CAUTION Failure to connect a replacement driver with the correct polarity will result in severe degradation for the unit s frequency and phase response and may harm its amplifier and driv ers CABLING MINA loudspeaker systems use three separate cables per loudspeaker for AC power balanced audio and RMS data The three cables can be consolidated by looming them together to create a multi cable for quick connection to each unit LIMITING When source levels fo
34. elects the correct operating voltage allowing it to be used internationally without manu ally setting voltage switches In addition Intelligent AC pro vides soft start power up eliminating high inrush currents suppresses high voltage transients up to several kilovolts filters common mode and differential mode radio frequen cies EMI and sustains operation temporarily during low voltage periods When powering up MINA the following startup events occur over several seconds 1 Audio output is muted 2 Voltage is detected and the power supply mode is auto matically adjusted as necessary The power supply ramps up 3 During the power up sequence the three color On Temp LED flashes all three colors 4 After the power up sequence and system check have completed the ON Temp LED turns solid green indicat ing the loudspeaker is ready to reproduce audio CAUTION If the ON Temp LED does not turn solid green after powering up and audio is muted the loudspeaker has encountered a failure and may need to be serviced Contact Meyer Sound Technical Support MINA CURRENT REQUIREMENTS The current draw for MINA is dynamic and fluctuates as operating levels change Since different cables and circuit breakers heat up at varying rates it is important to under stand the following types of current ratings and how they affect circuit breaker and cable specifications m Idle Current The maximum rms current during idle periods
35. ended 26 INTEGRATING SUBWOOFERS WITH MINA LOUDSPEAKER SYSTEMS MINA systems provide full bandwidth down to 66 Hz The height of the array number of cabinets determines the total SPL and low frequency energy proportional to the upper frequency spectrum If higher SPL is necessary or the pro gram content requires additional low frequency energy subwoofers should be integrated to augment the MINA arrays Meyer Sound subwoofers such as the 500 HP 600 HP and 700 HP achieve frequency responses down to the 30 to 39 Hz range enhancing low frequency response and increasing the overall acoustic power of the system in the lowest frequencies The ideal ratio of MINA loudspeakers to subwoofers depends on the following factors m Array configuration number of elements and angles m Placement of subwoofers whether they are flown or groundstacked m Frequency content reproduced by the system For most applications two MINA loudspeakers for each groundstacked subwoofer yields good results in frequency response and headroom Using higher ratios for example three MINA cabinets for one subwoofer should be done carefully since this may decrease headroom in the low fre quencies exposing the drivers in the subwoofers to exces sive levels i NOTE If subwoofers exhibit limiting Limit LEDs light before reaching the required SPL consider adding more subwoofers to meet the SPL requirements without exposing the drivers to exces si
36. etwork to provide virtual ground lift at audio frequencies Pin 2 Signal Pin 3 Signal Case Earth ground and chassis DC Blocking Differential DC blocking up to maximum common mode voltage CMRR gt 50 dB typically 80 dB 50 Hz 500 Hz RF Filter Common mode 425 kHz Differential mode 142 kHz TIM Filter lt 80 kHz integral to signal processing Nominal Input Sensi 0 dBV 1 0 V rms 1 4 V peak continuous average is typically the onset of limiting for tivity noise and music Input Level Audio source must be capable of producing 20 dBV 10 V rms 14 V peak into 600 to produce the maximum peak SPL over the operating bandwidth of the loudspeaker 47 APPENDIX B MINA SPECIFICATIONS AMPLIFIER Type Three channel Class D 975 W total three channels 2 x 375 W 1 x 225 W Note Wattage rating based on the maximum unclipped burst sine wave rms voltage the amplifier will produce into the nominal load impedance 39 V rms low channels 43 V rms high channel Output Power Total Output 1950 W peak Note Peak power based on the maximum unclipped peak voltage the amplifier will pro duce for at least 100 milliseconds into the nominal load impedance 55 V peak low chan nels 60 V peak high channel Load Capacity 4 Q low channels 8 Q high channel AC POWER Connectors PowerCon with loop output Voltage Selection Automatic continuous from 90 265 V AC Safety Agency Rated 100 240 V AC 50 60 Hz Ope
37. eyer Sound loudspeaker mea surements Performance predictions for each loudspeaker are based on 360 1 48th octave band measurements taken with a SIM audio analyzer in the Meyer Sound anechoic chamber The extraordinary consistency between Meyer Sound loudspeakers guarantees that predictions from MAPP Online Pro will closely match their actual perfor mance MAPP Online Pro predictions are requested by the client software and sent via the Internet to the high speed Meyer Sound servers where high resolution magnitude and phase polar data is processed with sophisticated acoustical pre diction algorithms The resulting predictions are then returned to and displayed on the local computer running the MAPP Online Pro client software TIP Meyer Sound offers seminars and webinars on using MAPP Online Pro For more informa tion visit www meyersound com MAPP Online Pro Applications With MAPP Online Pro you can m Simulate different loudspeaker configurations to refine system design and zero in on the best coverage for intended audience areas m Monitor loudspeaker interactions to locate destructive interferences so that loudspeakers can be re aimed and repositioned as necessary m Place microphones anywhere in the sound field and pre dict their frequency response impulse response and sound pressure m Determine delay settings for fill loudspeakers m Try out virtual Galileo equalization to determine optimum real world settings fo
38. fi et agr par le con structeur Deutsch Um die Gefahr eines elektrischen Schlages auf ein Minimum zu reduzieren den Lautsprecher vom Stromnetz trennen bevor ggf ein Audio Schnittstellensignalkabel ange schlossen wird Das Netzkabel erst nach Herstellung aller Signalverbindun gen wieder einstecken Der Lautsprecher an eine geerdete zweipolige Dreiphasen Netzsteckdose anschlie en Die Steckdose mu mit einem geeigneten Abzweigschutz Sicherung oder Leistungsschalter ver bunden sein Der Anschlu der unter brechungsfreien Stromversorgung an einen anderen Steckdosentyp kann zu Stromschl gen f hren und gegen die rtlichen Vorschriften versto en Der Lautsprecher nicht an einem Ort aufstellen an dem sie mit Wasser oder berm ig hoher Luftfeuchtigkeit in Ber hrung kommen k nnte Darauf achten da weder Wasser noch Fremdk rper in das Innere den Lautsprecher eindringen Keine Objekte die Fl ssigkeit enthalten auf oder neben die unterbrechungsfreie Stromversorgung stellen Um ein berhitzen dem Lautsprecher zu verhindern das Ger t vor direkter Sonneneinstrahlung fernhalten und nicht in der N he von w rmeabstrahl enden Haushaltsger ten z B Heizger t oder Herd aufstellen Im Inneren diesem Lautsprecher herr schen potentiell gef hrliche Spannun gen Nicht versuchen das Ger t zu ffnen Es enth lt keine vom Benutzer reparierbaren Teile Reparaturen d rfen nur von ausgebildetem K
39. ing Altitude To 4600 m 15 000 ft Shock 30 g 11 msec half sine on each of 6 sides Vibration 10 Hz 55 Hz 0 010 m peak to peak excursion Non operating Altitude To 95 at 35 C MINA COMPLIANCE LE www meyersound com Made in USA with domestic and foreign parts Pending Pending MINA DIMENSIONS 20 27 515 mm 7 60 193 mm 18 53 a 471 mm Se 8 38 213 mm 5 85 149 mm 90 mm 15 32 389 mm MINA Dimensions 49 APPENDIX B MINA SPECIFICATIONS MINA Dimensions with Rain Hood 20 27 515 mm 18 53 CT 471 mm EH 15 32 389 mm MINA Dimensions with Rain Hood 50 18 95 481 mm 7 60 193 mm Yy thinking sound Meyer ll Sound Meyer Sound Laboratories Inc 2832 San Pablo Avenue Berkeley CA 94702 2010 Meyer Sound All rights reserved MINA 05 207 005 01 A www meyersound com T 1 510 486 1166 F 1 510 486 835
40. ith equally advanced power capabilities Understanding power distri bution voltage and current requirements as well as electri cal safety issues is critical to MINA s safe operation AC CONNECTORS The MINA user panel includes 3 pole PowerCon AC con nectors AC INPUT RATING 115 230V 50 60 Hz 345W MAX 3A RMS 115V b 1 5A RMS 230V AC LOOP OUTPUT AVIS ere CAUTION 12A RMS 115V 13 5A RMS 230V RISK OF ELECTRIC SHOCK l DO NOT OPEN D Class 1 Wiring MINA AC Input Left and AC Loop Output Right Connectors AC Input Connector Blue The blue AC Input connector supplies power to the MINA loudspeaker The connector is rated at 20 amps and uses a PowerCon3 AC mains locking connector that prevents acci dental disconnections A 10 foot AC power cable rated at 15 amps is included with each MINA If you replace the included AC power cable make sure to use a cable with the appropriate power plug on the other end for the region in which you will operate the unit The AC Input connector also supplies power to any addi tional loudspeakers connected to the MINA s gray Loop Output connector Each MINA loudspeaker requires approx imately 3 24 A rms maximum at 115 V AC and 1 74 Arms maximum at 230 V AC for proper operation N CAUTION When using the included AC power cable do not loop more than three additional MINA loudspeakers from the AC Loop Output con nector at 115 V four total for the circuit and n
41. ive Meyer Sound loudspeakers the loudspeakers can also be driven from third party dig ital signal processors Full range signals can be connected directly to Meyer Sound self powered loudspeakers because the loudspeak ers have built in active crossovers External crossovers and digital signal processors are optional and should be used with caution as they can introduce phase shifts that cause destructive cancellations If a digital signal processor other than the Galileo 616 or Galileo 408 is used the MINA loudspeakers and subwoofers should be driven from the same processor to keep their delay times the same Otherwise a phase shift between the MINAs and subwoofers may be encountered In addition you should verify the delay time between channels some digital signal processors may incur channel to channel delays when the processor is near maximum throughput which becomes more likely as the number of filters in use by the processor is increased Third order filters and higher are not recommended If they must be used they should be used cautiously since they may cause phase shifts that deteriorate the impulse response in addition their higher roll off may also interfere with crossover interaction TIP To address the collective concerns of sys tem design verification subwoofer integration digital signal processors delay systems and acousti cal conditions a measurement system like Meyer Sound s SIM 3 is strongly recomm
42. l performance for MINA arrays is achieved by using the appropri ate number of units and splay angles to meet the coverage requirements of the venue Use the design guidelines for MINA arrays in Chapter 4 Line Arrays and System Integration along with MAPP Online Pro to verify designs and rigging configurations MG MINA GRID The MG MINA grid flies MINA arrays of up to 12 cabinets at a 7 1 safety ratio or up to 16 cabinets at a 5 1 safety ratio The grid which can also be used for groundstacking arrays accommodates a variety of pickup configurations with four side pickup points and 11 center pickup points BA NOTE For complete information on configura tion and load ratings for the MG MINA as well as other MINA rigging accessories refer to the MG MINA Assembly Guide PN 05 207 101 01 avail able at www meyersound com MG MINA Grid The MG MINA grid has four captive links two per side that attach to the top MINA in flown arrays The configuration of the links and orientation of the grid for either maximum uptilt or maximum downtilt determine the angle of the attached MINA The grid links are easily stowed for transport and groundstacked configurations The MG MINA grid includes eight 1 4 by 0 90 inch quick release pins four for securing the four grid links and four for securing MINA groundstacks to the top of the grid MINA OPERATING INSTRUCTIONS CAUTION Always use the quick release pins included with
43. les yielding a lower Q In general splay angles do not affect vertical coverage for lower frequencies Horizontal Coverage Horizontal coverage for a single MINA array is constant regardless of the number of array elements or the angles between them Achieving these objectives is a multi step process with dif ferent strategies m Lower and higher frequencies m Long throws and short throws BA NOTE MAPP Online Pro allows you to accu rately predict coverage For more information see Chapter 7 System Design and Integration Tools 22 High Frequency Design Strategies For far field coverage smaller splay angles between cabi nets achieves superior throw through better coupling Longer throws require more elements with smaller splay angles at the top of the array For near to mid field coverage larger splay angles can be used to increase vertical coverage Low Frequency Design Strategies While wave guides provide isolated control over various mid to high frequency coverage areas the low frequency section of MINA arrays makes use of mutual coupling with equal amplitude and phase to achieve better directivity Low frequency directivity is dependent on the number of elements in the array At low frequencies arrays with more elements longer provide more directivity and more SPL in this range An array s maximum directivity is achieved when the array s length is equal to or greater than the wavelength
44. lly affects the uniformity of coverage for both SPL and frequency response The number of longer throw higher SPL elements M elodies compared to the number of downfill elements MINAs must be carefully considered 24 m Vertical Splay Angles Splay angles between cabinets significantly impacts vertical coverage Narrower vertical splay angles between top elements M elodies produce higher Q vertical beamwidths and longer throws for those elements Wider splay angles for bottom elements MINAs yield lower Q for high frequencies for those ele ments Splay angles between higher SPL elements M elodies and downfill elements MINAs must be care fully considered in order to achieve smooth transitions Horizontal Coverage Horizontal coverage for M elodie and MINA sections is fairly constant regardless of the number of array elements for each section or the splay angles between them BA NOTE When integrating MINAs within the same M elodie array with the MTF M elodie MINA transition frame a delay of 1 5 ms should be added to the M elodie signal When integrating MINAs as separate arrays such as for sidefill use MAPP Online Pro to determine appropriate delay set tings GALILEO LOUDSPEAKER MANAGEMENT SYSTEM Meyer Sound s Galileo loudspeaker management system is a comprehensive solution for driving and aligning loud speaker systems especially those comprised of Meyer Sound self powered loudspeakers The
45. loudspeakers on the circuit including the first loudspeaker CHAPTER 2 POWER REQUIREMENTS WIRING FOR AC CONNECTIONS MINA loudspeakers require a grounded outlet To operate safely and effectively it is extremely important that the entire system be properly grounded Blue neutral Brown hot Yellow green earth ground chassis AC Cable Wiring Scheme When wiring international or special purpose power connec tors m Connect the blue wire to the black terminal or the termi nal marked with an N m Connect the brown wire to the red terminal or the termi nal marked with an L m Connect the yellow and green wire to the green or green and yellow terminal or the terminal marked with an E Ai CAUTION When creating AC power cables and distribution systems it is important to pre serve AC line polarity and connect the earth ground on both ends of the cable MINA requires a grounded connection Always use a grounded outlet and plug It is extremely important that the system be properly grounded in order to operate safely and properly Do not ground lift the AC cable 14 AC POWER DISTRIBUTION All components in an audio system self powered loud speakers mixing consoles and processors must be prop erly connected to an AC power distribution system ensuring that AC line polarity is preserved and that all grounding points are connected to a single node or common point using the same cable gauge
46. ment system comprised of software hardware micro phones and accessory cables SIM 3 is optimized for measuring audio frequencies with resolutions up 1 48th of an octave allowing you to apply precise corrections to bal ance system response using frequency and phase domain information 44 Source Independent Measurement Technique The SIM 3 audio analyzer implements Meyer Sound s source independent measurement technique a dual chan nel method that accommodates statistically unpredictable excitation signals Any excitation signal within a desired fre quency range can be used to obtain highly accurate mea surements for acoustical or electronic systems For example concert halls and loudspeaker systems can be captured during a performance and used as a SIM 3 test signal SO you can m View measurement data as amplitude versus time impulse response or amplitude and phase versus fre quency frequency response m Utilize a single channel spectrum mode m View frequency domain data with a logarithmic fre quency axis m Determine and internally compensate for propagation delays using the SIM 3 Delay Finder SIM 3 Applications SIM 3 s main applications are testing and aligning loud speaker systems which entails m Measuring propagation delays between subsystems to determine appropriate polarities and delay times m Measuring variations in frequency response caused by the acoustical environment and the placement and inte
47. n spilled or objects have fallen into the loudspeaker rain or moisture has entered the loudspeaker the loudspeaker has been dropped or when for undetermined reasons the loud speaker does not operate normally CAUTION To reduce the risk of electric shock do not expose this loudspeaker to rain or mois ture Do not install the loudspeaker in wet or humid locations without using weather protection equip ment from Meyer Sound SAFETY SUMMARY English To reduce the risk of electric shock dis connect the loudspeaker from the AC mains before installing audio cable Reconnect the power cord only after making all signal connections Connect the loudspeaker to a two pole three wire grounding mains receptacle The receptacle must be connected to a fuse or circuit breaker Connection to any other type of receptacle poses a shock hazard and may violate local electrical codes Do not install the loudspeaker in wet or humid locations without using weather protection equipment from Meyer Sound Do not allow water or any foreign object to get inside the loudspeaker Do not put objects containing liquid on or near the unit To reduce the risk of overheating the loudspeaker avoid exposing it to direct sunlight Do not install the unit near heat emitting appliances such as a room heater or stove This loudspeaker contains potentially hazardous voltages Do not attempt to disassemble the unit The unit contains no user servicea
48. ng to two cabinets and the MPA 3 for attaching to one or three cabinets The brackets bolt directly to the M6 threads in the end frames for one of the cabinets For flown applications the yoke supports up to 30 degrees of uptilt and severe downtilts of up to 90 degrees For flying larger arrays the MG MINA grid is recommended for smaller profile applications the MUB MINA U bracket is recommended BA NOTE For complete information on configura tion and load ratings for the MYA MINA as well as for other rigging accessories refer to the MG MINA Assembly Guide PN 05 207 101 01 avail able at www meyersound com Ze MYA MINA with MPA 3 Adapter and Three MINAS 34 MYA MINA with MPA 3 Adapter Three MINAs and C clamp CAUTION The MYA MINA s mounting bracket at the top of yoke has one 1 2 inch center hole that is rated for flown applications The smaller two center holes and four corner holes should only be used for attaching to pole mount adapters Pole Mounting MINAs with the MYA MINA Up to two MINA loudspeakers can be pole mounted with the MYA MINA mounting yoke For pole mount applica tions the yoke support up to 30 degrees of downtilt and severe uptilts of up to 90 degrees When pole mounting MINAs with the yoke a third party pole mount adapter is required Pole Mounted MYA MINA with MPA
49. of the frequencies being reproduced by the array BA NOTE For more information on basic system design methods refer to the MINA System Startup Guide PN 05 207 100 01 available at www meyersound com OPTIMIZING AND EQUALIZING ARRAYS Once the basic design of an array number of elements ver tical splay angles between cabinets and horizontal splay angles between arrays has been determined with MAPP Online Pro you can optimize the array by driving it with mul tiple equalization channels or zones Typically arrays are divided into two or three zones depending on the design and size of the array To optimize and equalize an array different strategies are required for m High frequencies long throws short throws m Low frequencies High Frequency Equalization Strategies For far field coverage air absorption plays a critical role The longer the distance the greater the attenuation that occurs for high frequencies In this zone high frequencies generally require correction to compensate for energy lost over dis tance the correction is usually proportional to the distance and high frequency air absorption For near to mid field coverage air absorption is not nearly as critical in this zone high frequencies need little or no cor rection Low Frequency Equalization Strategies Although arrays can be zoned for different equalization curves for high frequencies similar or identical equalization should
50. ot more than seven at 230 V eight total for the circuit AC Loop Output Connector Gray The gray AC Loop Output connector allows multiple MINA loudspeakers to be looped and powered from a single power source Connect the AC Loop Output of the first MINA to the AC Input of the second MINA and so forth The AC Loop Output uses a PowerCon3 AC mains locking con nector that prevents accidental disconnections The maximum number of loudspeakers that can be looped from the Loop Output connector is determined by the volt age of the power source the current draw of the looped loudspeakers the circuit breaker rating and the rating of the AC power cable connected to MINA Table 1 Number of MINAs that Can Be Looped with AC Power Circuit Breaker 115 V AC 230 V AC 100 V AC Connector Rating 3 looped 7 looped 2 looped 4 total 8 total 3 total 10 looped 3 looped 11 total 4 total BA NOTE The current draw for MINA is dynamic and fluctuates as operating levels change The numbers in Table 1 assume that operating levels are normal and not such that the loudspeakers are con stantly limiting 20 amps 5 looped 6 total Each MINA ships with one AC looping connector for making AC looping cables Assembled AC looping cables are avail able from Meyer Sound CAUTION Do not exceed the current capabil ity of the 20 amp Input connector for MINA When looping loudspeakers consider the total cur rent draw for all
51. r action of loudspeakers to determine corrective equaliza tion m Optimizing subwoofer integrations m Optimizing loudspeaker arrays SIM 3 can also be used in the following applications m Microphone calibration and equalization m Transducer evaluation and correction m Echo detection and analysis m Vibration analysis m Architectural acoustics m Underwater acoustics APPENDIX A OPTIONAL RAIN HOOD A weather protected version of MINA is available with a rain hood that safeguards the loudspeaker s electronics from the elements when used outdoors The rain hood which latches to the user panel and is easily installed and removed as necessary is made of a durable high impact polycar bonate that is also transparent allowing the loudspeaker s connections and LEDs to be visible MINA s heat sink does not require a rain hood as it is water sealed 7 60 3 75 193 mm 4 19 106 mm 18 95 481 mm 15 32 389 mm MINA Dimensions with Rain Hood INSTALLING THE MINA RAIN HOOD To install the MINA rain hood 1 Attach any required cables to the loudspeaker 2 If the rain hood s gasket material is not attached firmly attach it to the rain hood s inner edges Do not attach the gasket directly to the user panel 3 Attach the rain hood by slipping it under the flange at the top of the user panel placing it flush against the user panel aligning the rain hood s holes with those in the panel 4
52. r MINA exceed optimum input levels for its drivers limiting is engaged and is indicated by the two Limit LEDs on the user panel The bottom LED indicates lim iting for the low frequency channels The top LED indicates limiting for the high frequency channel When engaged lim iting not only protects the drivers but also prevents signal peaks from causing excessive distortion in the amplifier s channels thereby preserving headroom and maintaining smooth frequency responses at high levels When source levels return to normal below the limiter s threshold limiting ceases Low frequency limiter High frequency limiter Meyer Ko Sound Made in USA with domestic and foreign parts WWW meyersound com On Status Limit LEDs 18 MINA performs within its acoustical specifications at normal temperatures when the Limit LEDs are unlit or if the LEDs are lit for two seconds or less and then turn off for at least one second If an LED remains lit for longer than three sec onds the loudspeaker enters hard limiting where m Increases to the input level have no effect Distortion increases due to clipping and nonlinear driver operation m The drivers are subjected to excessive heat and excur sion which will compromise their life soan and may eventually lead to damage over time CAUTION The Limit LEDs indicate when a safe optimum level is exceeded If a MINA loudspeaker begins to limit before reaching the required SPL
53. r the best system response m Automatically calculate load information for arrays to determine rigging capacities front to back weight distri bution and center of gravity m Generate and export system images for client presenta tions 43 CHAPTER 7 SYSTEM DESIGN AND INTEGRATION TOOLS Using MAPP Online Pro MAPP Online Pro is compatible with the following operating systems m Windows m Linux m Unixe m Mac OS 10 4 or later Additional system requirements and recommendations are available on the MAPP Online Pro website http www meyersound com products mapponline pro Downloading and Installing MAPP Online Pro To use MAPP Online Pro you can register at the following link http www meyersound com products mapponline pro register After entering your registration information an email will be sent to you with your user name password and the MAPP Online Pro download location On screen instructions will guide you through the download and installation process The MAPP Online Pro client software is regularly upgraded to add support for the latest Meyer Sound loudspeakers as well as to add feature enhancements Most upgrades are downloaded automatically when logging on to a MAPP Online Pro session The MAPP Online Pro database includes nearly all of the current Meyer Sound loudspeakers subwoofers and processors SIM 3 MEASUREMENT SYSTEM The SIM 3 audio analyzer is a high resolution audio mea sure
54. rating Voltage Turn On Turn Off Points 90 V AC turn on no turn off Internal fuse protection above 265 V AC Current Draw Idle Current 0 256 Arms 115 V AC 0 249 A rms 230 V AC 0 284 A rms 100 V AC Maximum Long Term 1 26 Arms 115 V AC 0 66 Arms 230 V AC 1 50 A rms 100 V AC Continuous Current Burst Current 3 24 Arms 115 V AC 1 74 Arms 230 V AC 4 02 A rms 100 V AC Note AC power cabling must be of sufficient gauge so that under burst current rms con ditions cable transmission losses do not cause the loudspeaker s voltage to drop below the specified operating range Ultimate Short Term 10 4 A peak 115 V AC 5 2 A peak 230 V AC 11 1 A peak 100 V AC Peak Current 16 8 A peak 115 V AC 20 0 A peak 230 V AC 15 0 A peak 100 V AC Note Current draw for a single loudspeaker Loop output not used PHYSICAL Enclosure Premium birch plywood Finish Black textured Protective Grille Powder coated hex stamped steel with black mesh End frames with four captive GuideALinks secured with 0 25 x 0 53 quick release pins metric M6 attachment points for optional MYA MINA mounting yoke and MUB MINA U Rigging bracket Dimensions 20 27 w x 8 38 h x 15 32 d 615 mm x 213 mm x 389 mm ENVIRONMENTAL Operating Tempera 0 C to 45 C ture Non Operating Tem lt 40 C or gt 75 C perature 8 ch MINA OPERATING INSTRUCTIONS Humidity To 95 at 35 C Operat
55. re configuring a loudspeaker system with MINA subwoofers In particular pay close attention to material related to safety issues As you read these operating instructions you will encounter the following icons for notes tips and cautions BA NOTE A note identifies an important or useful piece of information relating to the topic under discussion TIP A tip offers a helpful tip relevant to the topic at hand CAUTION A caution gives notice that an action may have serious consequences and could cause harm to equipment or personnel and could cause delays or other problems Information and specifications are subject to change Updates and supplementary information are available at www meyersound com Meyer Sound Technical Support is available at m Tel 1 510 486 1166 m Tel 1 510 486 0657 after hours support m Web www meyersound com support m Email techsupport meyersound com MINA COMPACT CURVILINEAR ARRAY LOUDSPEAKER MINA is acompact member of the industry leading MILO family of loudspeakers from Meyer Sound Measuring just over a foot and a half wide half a meter and weighing only 41 2 lbs 18 69 kg MINA is ideal for use in low profile high power curvilinear array systems and an excellent choice for small theatres theme parks houses of worship AV sys tems and any venue where size and weight are concerns and exceptional fidelity a requirement MINA Loudspeaker Delivering the same signature
56. retrieval system or transmitted in any form or by any means electronic mechanical recording or otherwise without prior writ ten permission from Meyer Sound GuideALink Intelligent AC MINA RMS and all alpha numeric designations for Meyer Sound products and accessories are trademarks of Meyer Sound Galileo M elodie MAPP Online Pro Meyer Sound MICA MILO the Meyer Sound wave logo QuickFly SIM and TruShaping are registered trademarks of Meyer Sound Laboratories Inc Reg U S Pat amp Tm Off All third party trademarks mentioned herein are the property of their respective trademark holders SYMBOLS USED These symbols indicate important safety or operating features in this booklet and on the chassis Dangerous voltages risk of Important operating instructions Frame or chassis Protective earth ground electric shock Pour indiquer les risques Pour indequer important Masse chassis Terre de protection r sultant de tensions dangereuses instructions Warnung vor gefahrlicher Wichtige Betriebsanweisung oder Rahmen oder Gehause Masse Schutzleiter elektrischer Spannung Gebrauchsanleitung Para indicar voltajes peligrosos Instrucciones importantes de Armadura o chassis Tierra proteccionista funcionamiento y o manteniento IMPORTANT SAFETY INSTRUCTIONS 1 Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this loudspeaker near water Clean only with dry cloth e
57. row disper sion minimizing destructive high frequency interactions between cabinets MINA Rear Panel The MINA drivers are powered by an extremely efficient onboard three channel Class D amplifier that uses minimal AC power when idle Signal processing includes a complex crossover frequency and phase correction and limiters that ensure maximum driver lifespan The Intelligent AC power supply automatically adjusts for international line voltages protects against transients and provides soft turn on The RMS remote monitoring system module comes stan dard on all MILO family loudspeakers and provides compre hensive monitoring of system parameters on a Windows based computer The MINA enclosure is constructed of premium birch ply wood and coated with a black textured finish A powder coated hex stamped steel grille with black mesh protects the unit s drivers Additional options include weather protec tion and custom color finishes for fixed installations and applications with specific cosmetic requirements With its low distortion flat frequency and phase responses uniform horizontal coverage and tight vertical coverage MINA is also well equipped for use as a single cabinet or for use with a small number of cabinets for applications requir ing a precise high frequency vertical pattern Single cabi nets and short stacks are ideal for frontfill and under balcony applications as well for main systems in small
58. t audio cables for MINA loudspeakers in an array are wired cor rectly Pin 1 to Pin 1 Pin 2 to Pin 2 and so forth to prevent the polarity from being reversed If one or more loudspeakers in an array have reversed polarity frequency response and coverage can be signifi cantly degraded TIP If unwanted noise or hiss is produced by the loudspeaker disconnect its input cable If the noise stops there is most likely nothing wrong with the loudspeaker To locate the source of the noise check the audio cable source audio and AC power Audio Loop Output Connector The male XLR Loop connector allows multiple MINA loud speakers to be looped from a single audio source Connect the Loop Output of the first loudspeaker to the Input of the second and so forth The Loop Output connector is wired in parallel to the Input connector and transmits the unbuffered source signal even when the loudspeaker is powered off To avoid distortion when looping multiple MINA loudspeak ers make sure the source device can drive the total load impedance of the looped loudspeakers In addition the source device must be capable of delivering 20 dBV 10 V rms into 600 ohms to yield the maximum peak SPL over the operating bandwidth of the loudspeaker To calculate the load impedance for the looped loudspeak ers divide 10 KOhms the input impedance for a single MINA by the number of looped loudspeakers For example the load impedance for 10 MINA loudsp
59. tartup To wink a commissioned loudspeaker press the Identify button The Wink LED on the loudspeaker icon in the RMS software lights up and the Activity Wink LED on the loudspeaker s RMS user panel turns solid green Press the Identify button again to unwink the loudspeaker TIP The Wink function is useful for identifying the physical loudspeaker corresponding to a loudspeaker icon in the RMS software Activity Wink LED Green The green Activity Wink LED indicates the status of the loudspeaker m During startup the LED blinks 10 ten times m If the loudspeaker has not yet been commissioned the LED is not lit after startup m Ifthe loudspeaker has been successfully commissioned the LED flashes continuously and flashes more rapidly with increased data activity m When the loudspeaker is winked either by clicking the Wink button in the RMS software or by pressing the Identify button on the RMS user panel the LED is solid green TIP The Wink function is useful for identifying the physical loudspeaker corresponding to a loudspeaker icon in the RMS software BA NOTE The Activity Wink LED on the RMS user panel is used exclusively by RMS and has no effect on the acoustical or electrical activity of the MINA loudspeaker Remote Mute Switch The recessed Remote Mute switch on MINA s RMS user panel determines whether the RMS software can control muting and soloing of the loudspeaker MINA ships from the factory wi
60. ter frame at 5 degrees using the 0 degree hole in the MINA GuideALinks to compensate for the stack s center of gravity m When groundstacking MINAs with the caster frame make sure that all four caster wheels are blocked to pre vent the stack from rolling away 37 CHAPTER 5 QUICKFLY RIGGING 38 CHAPTER 6 RMS REMOTE MONITORING SYSTEM The MINA loudspeaker includes an RMS module which allows the loudspeaker to be connected to an RMS network RMS provides real time monitoring of multiple Meyer Sound self powered loudspeakers from a Windows based com puter The RMS host computer communicates with Meyer Sound loudspeakers equipped with RMS modules via a simple twisted pair network or an Ethernet network using an FT 10 to Ethernet adapter NOTE For the latest RMS system require ments go to www meyersound com BA NOTE The RMS software allows you to dis able Mute and Solo functions to eliminate any possibility of accidentally muting loudspeakers Mute and solo capability can also be disabled by setting the Remote Switch on MINA s RMS user panel to Disable For more information refer to the RMS User Guide BA NOTE RMS does not control AC power RMS SOFTWARE RMS software provides extensive system status and perfor mance data for each loudspeaker including amplifier volt age limiting activity power output driver status as well as mute and solo capability Loudspeakers are added to the RMS network and
61. th the switch enabled RMS Network Remote Mute Disable Enable aT RMS Module m Disable When the Remote Mute switch is set to Disable to the left MINA cannot be muted and soloed from the RMS software m Enable When the Remote Mute switch is set to Enable to the right MINA can be muted and soloed from the RMS software BA NOTE The RMS software also allows you to disable Mute and Solo functions to eliminate any possibility of accidentally muting loudspeakers For more information refer to the RMS User Guide Network Connectors The two Weidmuller connectors transfer data to and from the RMS network Two connectors are provided to allow for easy connection of multiple daisy chained loudspeakers on the network Included with each RMS equipped loud speaker are RMS cable connectors and mounting blocks for constructing RMS cables The RMS blocks allow the cables to be securely attached to the RMS module with screws MINA OPERATING INSTRUCTIONS 41 CHAPTER 6 RMS REMOTE MONITORING SYSTEM 42 CHAPTER 7 SYSTEM DESIGN AND INTEGRATION TOOLS Meyer Sound offers two comprehensive tools to assist with the acoustical and functional requirements of system design and optimization This chapter introduces you to MAPP Online Pro Meyer Sound s patented online acoustical pre diction tool and SIM 3 a comprehensive system for mea surement and analysis MAPP ONLINE PRO MAPP Online Pro is a powerful cross platform
62. tified with the Wink option in RMS which lights the Wink LED on the RMS module for that particular loudspeaker Conversely a loudspeaker can be identified in the RMS software by pressing the Identify button on the loudspeaker s RMS module os EE EE SE EEA EE SE a l e EE Ee Kee EE EE SS A LF LF LT LT OT OP SOF OF AF SO 3 NT ET I EP IO SE SS SEP EES EDF f RMS User Panel Loudspeaker icons and views can be arranged to represent how the loudspeakers have been deployed in the system Multiple panels can be saved and recalled for specific per formances and venues RMS MODULE MINA s RMS user panel includes an Identify button Wink Activity LED Remote Mute switch and two Network con nectors RMS Network Remote Mute Disable Enable El Identify gt Wink Activity RMS Module BA NOTE The buttons and LED on MINA s RMS user panel are used exclusively by RMS and have no effect on the acoustical or electrical activity of the loudspeaker 40 Identify Button The Identify button serves the following functions m If the loudspeaker has not yet been commissioned Activity Wink LED not lit press the Identify button to identify the loudspeaker on the RMS network and com mission it m To decommission the loudspeaker press and hold the Identify button during s
63. undenienst personal durchgef hrt werden Espa ol Para reducir el riesgo de descarga el c trica desconecte de la red de voltaje el altoparlante antes de instalar el cable de se al de audio Vuelva a conectar la alimentacion de voltaje una vez efectu adas todas las interconexiones de se alizacion de audio Conecte el altoparlante a un tomacorri ente bipolar y trifilar con neutro de puesta a tierra El tomacorriente debe estar conectado a la protecci n de deri vaci n apropiada ya sea un fusible o un disyuntor La conexi n a cualquier otro tipo de tomacorriente puede constituir peligro de descarga el ctrica y violar los c digos el ctricos locales No instale el altoparlante en lugares donde haya agua o humedad excesiva No deje que en el altoparlante entre agua ni ning n objeto extra o No ponga objetos con l quidos encima de la unidad ni cerca de ella Para reducir el riesgo de sobrecalen tamiento no exponga la unidad a los rayos directos del sol ni la instale cerca de artefactos que emiten calor como estufas o cocinas Este altoparlante contiene niveles de voltaje peligrosos en potencia No intente desarmar la unidad pues no contiene piezas que puedan ser repar das por el usuario Las reparaciones deben efectuarse nicamente por parte del personal de mantenimiento capaci tado en la f brica CONTENTS Chapter 1 Introduction How to Use This Manual MINA Compact Curvilinear Array Loudspeaker
64. ve heat and excursion Meyer Sound s Galileo loudspeaker management system includes filters that facilitate subwoofer integration with MINA arrays High pass filters augment array headroom by removing lower frequencies near the unit s lower operating range while low pass filters remove unwanted mid low fre quencies reproduced by the subwoofers The filters reduce the area of overlap and minimize the interaction and possi ble cancellations between the subsystems BA NOTE Full range signals can be connected directly to Meyer Sound s self powered loud speakers and subwoofers because they have built in active crossovers However the use of external filters like the ones in Galileo is optional and should be used cautiously to minimize phase shifts that can cause cancellations and deteriorate the impulse response of the system Integrating 500 HP Subwoofers For most applications Meyer Sound s 500 HP subwoofer is the logical choice for enhancing low frequencies in MINA loudspeaker systems The 500 HP extends the range of the system down to 35 Hz The 500 HP can be flown or ground stacked with MINA arrays using the optional MTF M elodie MINA transition frame For applications requiring more low frequency headroom Meyer Sound s 600 HP and 700 HP subwoofers are ideally suited for integration with MINA sys tems BA NOTE When integrating MINAs within the same 500 HP array with the MTF M elodie MINA
65. when integrating MINAs with other Meyer Sound loudspeakers M elodies MICAs 500 HPs 600 HPs and 700 HPs it is necessary to compensate for this latency with a delay setting which is easily implemented with the Galileo loudspeaker management system see Galileo Loud speaker Management System on page 24 m When integrating MINAs within the same Melodie array with the MTF M elodie MINA transition frame a delay of 1 5 ms should be added to the Melodie signal m When integrating MINAs within the same 500 HP array with the MTF M elodie MINA transition frame a delay of 1 8 ms should be added to the 500 HP signal m When integrating MINAs as separate arrays such as for sidefill in systems with other loudspeakers use MAPP Online Pro to determine appropriate delay settings for all loudspeakers USING MINA LOUDSPEAKERS FOR SIDEFILL AND DOWNEFILL IN M ELODIE ARRAYS MINA s acoustical characteristics ensure seamless integra tion with M elodies especially when MINA is used for down fill in M elodie arrays via the MTF M elodie MINA transition frame as well as when MINA arrays are used as sidefills with M elodie main arrays Understanding the differences and similarities between the two loudspeakers is crucial to designing and fine tuning system coverage For combined M elodie MINA arrays their design depends on the following factors Number and Type of Array Elements The number of elements drastica
66. y from MINA to avoid hazards from electrical shock CHAPTER 3 AMPLIFICATION AND AUDIO MINA s drivers are powered by an extremely efficient onboard three channel Class D amplifier that uses minimal AC power when idle Internal signal processing includes a complex crossover frequency and phase correction and limiters that prevent driver overexcursion and regulate voice coil temperatures ensuring maximum driver lifespan AUDIO CONNECTORS MINA includes XLR audio connectors for Input and Loop Output Looping Audio Input 10k Q Balanced GND Circuit 1kQ Earth Chassis Audio Input and Loop Output Connectors Audio Input Connector The female XLR Input connector accepts a balanced audio signal with an input impedance of 10 kOhm The connector uses the following wiring m Pin1 1 kOhm to chassis and earth ground ESD clamped m Pin 2 Signal m Pin 3 Signal m Case Earth AC ground and chassis Pins 2 and 3 carry the input as a differential signal Pin 1 is connected to earth through a 1 kOhm 1000 pF 15 V clamped network This circuitry provides virtual ground lift for audio frequencies while allowing unwanted signals to bleed to ground Make sure to use standard balanced XLR audio cables with all three pins connected on both ends Telescopic grounding is not recommended and shorting an input connector pin to the case may cause a ground loop resulting in hum CAUTION Make sure tha
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