DPA MANUAL Rev001 08.10.2010
Contents
1. ce 7 Rear Panel Controls associer Roe d aed b pun Rial pic RN t idu dia 8 TPO OU pul CoUneel DI Roda 10 Setup Operations sssi anrr Lade Ou eM o E 11 Typical Application Sen a a E S 14 9 Protecions amp aati EEEN 17 SKOONE 18 WSC CU AOS DU M Gin IUS DM un 20 Lo otto 23 Studiomaster PROFESSIONAL Thank you for your purchase of the STUDIOMASTER DPA Series power amplifiers These amplifiers fully incorporate STUDIOMASTER s renowned technology and offers high reliability rock solid stability and superb acoustic characteristics Please retain original packing should you have to return the unit for the repairs Features General Description of Product Rugged 19 rack mountable design of chassis High current torroidal transformer which provides excellent regulation and minimized hum amp noise Low THD and high damping factor for excellent sound quality Q Extensive protection circuitry for Overheat Overload DC Output short circuit Indicator LEDs for Signal Clip Protect Power ON Mode Selection Output termination on 4 way speakon Connectors and Binding posts for each channels2. Limiter circuit protects the amplifier and speaker from being over driven because of high input level signal Designed with a sophisticated VHF limiter that reduces the risk of HF stress and protects your speakers particularly HF units e Balanced Unbalanced input signal through parallel XLR in both channels Slide Switches For 1 Mode selection Mono Stereo Bridge 2 Sensitivity 0 775 V 1V 1 4 V 3 Low cut 30Hz ON OFF 4 Ground Lift GND LIFT 5 Limiter 6 HF Limiter Twintunnel cooling with front to back airflow This owners Manual covers 4 models DPA 2000 DPA 3200 DPA 4500 amp DPA 5000 power amplifiers Please read through this manual carefully before beginning use so that you will be able to take full advantage of amplifier s superlative features and enjoy trouble free operation for years to come After reading through the manual please store it in a safe place PROEESSIONAL DPA 2000 Class H Professional Power Amplifier Zar im Studiomaster ROFESSIONAL DPA 3200 Class H Professional Power Amplifier Front Panel Controls amp Features 1 Master switch Switches the unit on and off interrupting both phases 2 Power ON indicator light When lit this blue LED indicates that amplifier is ON 3 Volume control Used for adjusting the volume of the channel 4 Signalindicator Green LED that indicates the presence of the signal i
3. 5 11 Studiomaster PROFESSIONAL Setup amp Operation Parallel Mode Configuration SPEAKER SYSTEM SPEAKER SYSTEM IMP 80 40 20 IMP 80 40 20 PL st MICROPHONES 1 2 4 WIRELESS MICROPHONE efx EL e Woo ee TI Mase Vu Eliri Ho emm CD PLAYER s le ns green Studi master PAMIXER Note Y cable to be used to make mono cable or use mono output of mixer When operating in PARALLEL mode the signal source should be connected to the balanced unbalanced inputs of channel 1 only Both channels provide similar outputs to their respective loudspeakers Each channel can separately drive loudspeaker loads of 8 ohm or 4 ohm or 2 ohm Connect the line output of a mixer to a channel 1 input of TO select PARALLEL mode keep the slide switch the amplifier Inputs can be wired as per fig 1 amp 2 Input provided at rear panel in parallel position Connections for Balanced and Unbalanced Mode The desired output levels for both the channels are Connect a speaker system 8 ohm 4 ohm 2 ohm on the adjustable by volume controls of respective channels output terminal of each channel Either use the speakon connector amp wire these as per fig 3 Output Connections The level indicator LEDs glow to indicate the for Stereo Parallel Mode or use Binding Post as per wir
4. cause DC Protection Inbuilt circuitry is provided to protect the loudspeaker from any offset DC voltages 19 Rack Installation The amplifier is designed for use in a standard 19 rack with height of 2U units DPA 2000 and 3U units DPA 3200 DPA 4500 amp DPA 5000 In order to provide sufficient support base to the heavy amplifier it is essential to use the 19 rack system with side support channels The installed amplifier therefore is well supported by the side support channels as well as rigidly fixed on the rack through the two rack mount side brackets dully fitted with U type handles as shown in the figure below 0 co 0 c 0 0 0 0 a g 0 0 0 Overload Short Circuit Protection Protection circuit is provided in both channels for the safety of output devices in case of overloading or mismatching of impedances at outputs This circuit brings the input signals to respective channels are pressed AC Mains Fuses DPA 2000 T 12 5AL 250V DPA 3200 T 20AL 250V DPA 4500 T 20AL 250V DPA 5000 T 25AL 250V Table Top Usage The U handles are helpful in easy portability of the amplifier for table top usage 17 Studiomaster PROFESSIONAL Trouble Shooting Key to LED symbols GLOWING BLINKING OFF 1 2 3 4 18 Indication PROTECT cur xt SIGNAL Condition Normal operation Possible Reason The amplifier is in
5. normal operation it POWER Indication PROTECT SIGNAL POWER Condition power to the amplifier Possible Reason The amplifier power switch may be off The amplifier may not be plugged into the power receptacle Confirm that the AC outlet works by plugging in another device If too many amplifier are used on one outlet the building s circuit breaker may trip and shut off power An overload in bridge mode may cause tripping of main switch on front panel An amplifier which keeps shutting off may have a serious internal fault Turn it off remove AC power cord and get the amplifier serviced by a qualified technician Indication PROTECT SIGNAL rit POWER Condition Low output Possible Reason Check if the level of the input signal is too low Check the signal source is operating and the input cable is intact The channel volume control setting is not at desired level Similar conditions may occur in PARALLEL and BRIDGE mode Indication rt PROTECT SIGNAL it POWER Condition No Sound Possible Reason The amplifier goes in Protect mode due to excessive input signal speaker impedance mismatch or output short circuit Check the speaker impedance and speaker wiring for stray strands or breaks in the insulation Reduce the volume control for desired output The amplifier might also go in Protect mode because of overloading or poor ventilation resulting into the rise in t
6. this connector for picking up the amplified signal of CH 2 7 Power cable Use this cable for supplying power to unit 8 Configuration switch This three way switch configures the amplifier for the three working modes parallel stereo and bridge 9 Outlet grill The air sucked from the front grills is thrown out from these grills Do not obstruct the grills The air filter whenever necessary Studiomaster PROEES SIONAL 10 1 12 13 14 15 Sensitivity This switch is used to select sensitivity to either 0 775V 1V or 1 2V depending on the source Ground lift Allows circuit amp chassis grounds to be separated in case of ground loops Low cut Low cut switch filters the low frequencies from the input signal Cut off frequency is 30 Hz when it is selected The filter protects the cone of the speakers against unwanted and inaudible low frequencies Fuse Mains fuse secures the amplifier amp wires against defects Replace this only with the same type amp rating Limiter This switch activates limiter when in ON position The limiter prevents distortion of the output level when its gets overloaded When the output level exceeds its maximum an internal adjustment will be made to prevent overloading The limiter is specially designed to safeguard connected full range speakers The high tone piezo drivers of these speakers are now protected against distortion and harmonic signals which are the resul
7. O N 10 Studiomaster PROEES SIONAL Setup amp Operation Stereo Mode Configuration SPEAKER SYSTEM SPEAKER SYSTEM IMP 89 49 20 IMP 80 40 20 BR PL MICROPHONES 4 WIRELESS MICROPHONE g 2 c 0000 H CD PLAYER 0 B g E Studi master PAMIXER In STEREO mode both channels 1 amp 2 are fully independent of each other The balanced unbalanced inputs can be connected either to a stereo signal source or two independent mono signal sources Each channel can separately drive loudspeaker loads of 8 ohm or 4 ohm or 2 ohm Connect the Left and Right outputs of a mixer to a channel To select STEREO mode keep the slide switch 1 and 2 inputs of the amplifier respectively Inputs can be provided at rear panel in STEREO position wired as per fig 1 amp 2 Input Connections for Balanced Adjust the individual volume controls of each channel and Unbalanced Mode on the front panel to obtain the desired output level The level indicator LEDs glow to indicate the presence of signal at the output terminals Connect a speaker system 8 ohm 4 ohm 2 ohm on the output terminal of each channel Either use the speakon connector amp wire these as per fig 3 Output Connections for Stereo Parallel Mode or use Binding Post as per wire diagram of fig
8. PROFESSIONAL DUAL CHANNEL POWER AMPLIFIERS DPA 2000 DPA 3200 DPA 4500 DPA 5000 Owner s Manual Studiomaster ud AVN gt KE 10 11 CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL The above warning is located on the top of the unit Explanation of Graphical Symbols The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompany ing the product IMPORTANT SAFETY INSTRUCTIONS Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water Clean only with dry cloth Do not block any ventilation openings Install in accordance with the manufacturer s instructions Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat Do not defeat the safety purpose of the
9. alanced Mode 00004 Eo PLAYER Studiomaster The speaker connections of amplifier 2 are done in a similar way as for amplifier 1 Amplifier 1 and 2 will be used in stereo mode Keep the slide switch of amplifier land 2 in stereo position Adjust the volume controls of channel 1 amp 2 of both the amplifiers to control the levels of their respective Speakers Finally any adjustments in the total quantity of the sound if required can be made from the audio mixing console 15 PROFESSIONAL Studiomaster Typical Applications Parallel Mode High Power Dual Channel Configuration SPEAKER SPEAKER SPEAKER LEFT SPEAKER BACK MICROPHONES 1 E WIRELESS 17 MICROPHONE STEREO KEYBOARD HEADPHONE 4 SPEAKER Studiom SPEAKER MO SPEAKER Connect the left line output of the Audio mixing console to the channel 1 input XLR of amplifier 1 Connect CH 1 LINK OUT XLR of amplifier 1 to the channel 1 input XLR of amplifier 2 The XLR input can be wired as per fig 1 amp 2 Input Connections for Balanced and Unbalanced Mode The Left speaker stack compromises of four nos speaker systems Each speaker is individually connected to the four speaker outputs available from amplifier 1 channel 1 amp 2 and amplifi
10. e presence of signal at the output terminals diagram of Fig 5 12 PROEES SIONAL Setup amp Operation Bridge Mode Configuration MICROPHONES WIRELESS MICROPHONE PA MIXER SPEAKER SYSTEM IMP 80 40 uo BR H PL acai sq CD PLAYER Studi master Note Y cable to be used to make mono cable or use mono output of mixer For BRIDGE mode operation the signal source should be connected to the balanced unbalanced inputs of channel 1 only In this mode the combined power output of both channels should be connected to a single loudspeaker load The combined loudspeaker load should not go below 4 ohm Connect the line output of a mixer to a channel 1 input of the amplifier Input can be wired as per fig 1 amp 2 Input Connections for Balanced and Unbalanced Mode Connect a speaker system 8 ohm 4 ohm on the speakon output of channel 1 only Either use the speakon connectors and wire these as per fig 4 Output Connections for Bridge Mode or Binding Post connections as per fig 6 To select BRIDGE mode keep the slide switch provided at rear panel in Bridge position and ensure that the bridge LED located on the back panel glows The desired output levels of both the channels are adjustable by volume control
11. emperature either of output devices or power transformer Switch off the amplifier to cool down Check if the fan is working proper ventilation is provided and output connections are as recommended Similar conditions may occur in PARALLEL and BRIDGE mode Studiomaster SIONAL 5 6 7 8 Indication PROTECT CLIP SIGNAL rt POWER Condition Distorted Sound Possible Reason The input signal level may be too high So turn down the amplifier level controls Check the level of the input source If it is high then reduce the input signal level The amplifier should never be operated at a level which causes the CLIP LED to illuminate constantly Similar conditions may occur in PARALLEL and BRIDGE mode Indication PROTECT Condition Either low or no sound Possible Reason This could be due to wrong speakon connections or faulty speaker Check the output speakon connections as per fig 4 on page no 10 Output Connections for Bridge Mode FOLLOW SAME TROUBLE SHOOTING INSTRUCTIONS FOR CH 2 ALSO Condition Hum Possible Reason Move cabling and signal sources to identify the problematic areas in the system Cables with faulty shielding are a frequent entry point for him In the situation where the hum is present in the installations due to close looping of ground cut the jumper on the input PCB to isolate input ground to mains earth Condition Hiss Possible Reason Unplug the amplifier input to con
12. er e SX 521 Active 2 Way 3 Way 4 Way Crossover Passive Speakers e Series e DYS Series 22 Studiomaster PROEES SIONAL Notes 23 Studiomaster PEGTISSIONAT For Your Records RR CTIA IN IMP I INED P Deale SHIME Dealer s Phone estis inte Ijate ot Purchase DIE MEN Design and specification are subject to change without notice Ra ee or use of logos images or design elements is strictly prohibited by law No pat of the compilation may be reproduced in any manner or translated without written permission Brought to you POOP wes A1 A2 Giriraj Industrial Estate Mahakali Caves Road Andheri East Mumbai 400 093 India Tel 022 30880743 776 Fax 022 26871453 E info audioplus india com W www audioplus india com Rev001 Oct 2010
13. er 2 channel 1 amp 2 Output speakon connectors to be wired as per fig 3 Output Connections for Stereo Parrallel Mode or fig 5 for Binding Post connection Amplifier 1 amp 2 will be used in Parallel mode 16 RIGHT BACK SPEAKER MO Keep the slide switch of amplifier 1 and 2 in Parallel position Similarly connect the Right line output of the Audio mixing console to the channel 1 input XLR of amplifier 3 Also connect CH 1 LINK OUT XLR of amplifier 3 to the channel 1 input XLR of amplifier 4 The Right speaker stack s connections are done in a similar way as for left speaker stack s connections Amplifier 3 and 4 will also be used in Parallel mode Adjust the volume controls of both the channel in all the four amplifier to control the levels of their respective speakers Finally any adjustments in the total quality of the sound if required can be made from the audio mixing console SIONAL Protections amp Installations Thermal Protection e Output Devices Due to excessive heating of output devices the thermal protection circuits brings the audio signal to mute status Onset of thermal protection circuit is indicated by glowing of Protect LED in each channel To restore normal operating condition it is recommended to switch off the amplifier wait till it cools down amp then turn on the amplifier for normal operation If the problem persist rectify the
14. er load over head over load limit Input Connector E XLR per channel Input Impedance Output Connector per channel 4 WAY SPEAKON Connector amp BINDING POST for each channel Twin Tunnel cooling with front back air flow Volume Controls for CH 1 amp CH 2 Power On Signal Limit Protect Bridge T12 5AL 250V T20AL 250V T20AL 250V T25AL 250V Dimensions H x W x D 88 x 483 x 455mm 130 x 483 x 455mm 2 Rack U 3 Rack U Net Weight 27 6 kg 40 3 kg 44 kg 46 75 kg Shipping Carton Size WxDxH 580 x 570 x 150mm 580 x 570 x 195mm 20 Studiomaster PROFESSIONAL Other Recommended Studiomaster Professional Products Wired Microphones SMIOOXLR e SM200XLR e SM500XLR Wireless Microphones MR 12 Series GR Series DR Series KR Series AR Series e ER 11 Series 58 Series e BR 12 Series BR 11 Series Headphones e Phon 28 Mixers Basic Series Diamond Club Series Air Series Club 2000 Series e Series e PRO VI Series Platinum Series DJ Mixers DJX 300 MK I DJX 626 e Playmix 300 DJX 800 21 FROFESSTONAT Power Supply Stabilizers e SVC 51000 52000 SVC 53000 e 55000 58000 Processors e SEQ 152 Dual 15 Band Graphic Equalizer Multi III 8 Channels Splitter Mixer DI Box e 5 2 2 Way Stereo Crossover e SX 321 2 Way 3 Way Crossov
15. firm whether the hiss is coming from the source or a device upstream The erratic or popping noises indicate an electronic fault in the offending unit 19 Studiomaster PROFESSIONAL Specifications MODELS DPA 2000 DPA 3200 DPA 4500 DPA 5000 Output power 20 2x 1040W RMS 20 2x 1600W RMS 20 2 x 2200W RMS 20 2 2600W RMS Stereo THD 1 4Q 2x 780 RMS 2 x 1950W RMS 80 2 520 RMS 80 2x 800 RMS 80 2x 1100W RMS 80 2 x 1300W RMS Bridged THD 1 40 2080W RMS 40 3200W RMS 40 4400W RMS 5000W RMS 80 1560W RMS 80 2400W RMS 80 3300W RMS 3900W RMS EIA rating Parallel Mode THD 1 20 2 1600 RMS 20 2x 2250 RMS 20 2 3400 RMS 2 x 3900 RMS 4Q 2x 1012RMS 40 2 1650 RMS 40 2 2350 RMS 2x 2800 RMS 80 2 x 650 RMS 80 2 1050 RMS 180 2x 1400 RMS 2x 1600 RMS EIA rating Bridge Mode 2 THD 1 4Q 2800 RMS 4Q 3600 RMS 4Q 6000 RMS 4Q 7800 RMS 80 1800 RMS 8Q 2750 RMS 8Q 4225 RMS 8 5600 RMS Frequency Response 20Hz 20kHz 0 0 5dB 20Hz 20kHz 0 5dB THD N rated power single 0 0594 80 1kHz channel in 8 O load Factor gt 200 1 80 gt 300 1 80 Signal to Noise Ratio gt 95 dB A Weighted gt 93 dB A Weighted gt 95 dB A Weighted Crosstalk gt 70dB 8Q1kHz 0 775 Vrms EP 1 0 Vrms Input Sensitivity 1 4 Vrms For rated power 40 20kQ balanced 10kQ unbalanced Protection devi DC short circuit DC short circuit Soft Start FOTECHON CEVICES over head ov
16. l shock hazard In particular be careful not to place heavy objects on a power cord covered by a carpet Do not scratch bend twist pull or heat the power cord A damaged power cord is a fire and electrical shock hazard Do not remove the unit s cover You could receive an electrical shock If you think internal inspection maintenance or repair is necessary contact your dealer Do not modify the unit Doing so is a fire and electrical shock hazard If lightning begins to occur turn off the power switch of the unit as soon as possible and unplug the power cable plug from the electrical outlet If there is a possibility of lightning do not touch the power cable plug if it is still connected Doing so may be an electrical shock hazard In case an abnormality occurs during operation If the power cord is damaged i e cut or a bare wire is exposed ask your dealer for a replacement Using the unit with a damaged power cord is a fire and electrical shock hazard Should this unit be dropped or the cabinet be damaged turn the power switch off remove the power plug from the AC outlet and contact your dealer If you continue using the unit without heeding this instruction fire or electrical shock may result If you notice any abnormality such as smoke odor or noise or if a foreign object or liquid gets inside the unit turn it off immediately Remove the power cord from the AC outlet Consult your dealer for repair Using
17. n be connect ed to the channel loutput of amplifier 2 Output speakon connectors can be wired as per fig 4 Output Connections for Bridge Mode or fig 6 for Binding Post connections Amplifier 2 will be used in bridge mode Keep the slide switch of amplifier 2 to BRIDGE position to activate bridge mode as indicated by the glow of BRIDGE LED make sure that LOW CUT switch is in OFF position Finally adjust the volume control of channel 1 amp 2 in amplifier 1 to control the level of their respective position to get desired power Also adjust the volume control of channel 1 in amplifier 2 to control the levels of their respective position to get desired power SIGNAL Typical Applications Stereo Mode Cascade Configuration Resultant Imp not 20 gt Resultant Imp not 20 Resultant Imp not lt 20 MICROPHONE Resultant Imp not 20 Connect the Left and Right outputs of the Audio mixing console to the channel 1 amp 2 XLR of amplifier 1 Connect CH 1 LINK OUT input of amplifier 1 to CH 1 IN XLR of amplifier 2 Similarly make connections for CH 2 Speakers can be connected to respective output but ensure that resultant impedance is not less than 2 ohms The input can be wired fig 1 amp 2 Input Connections for Balanced and Unb
18. n the final stage It lights up with signals higher than 20dB 5 Clip indicator This red LED lights up to indicate that the internal limiter has been activated to eliminate clip When the limiter is activated it indicates that the maximum amplification has been reached When it lights up continuously this means there is an excessive signal input 6 Protect indicator Red LED that indicates the mute status of the channel and is lit for the following reasons switch on delay 3 seconds presence of continuous voltage on the channel output short circuit thermal protection of the channel thermal protection of the transformer Studiomaster PROFESSIONAL DPA 2000 NOTE 250VAC REPLACE FUSE WITH YPE ONLY 40 60 2b0 240VAC Rear Panel Controls amp Features 1 Balanced XLR input This XLR connector takes the signal balanced unbalanced for driving the channel If the signal is unbalanced pin 2 can be used for the signal and pin 3 connected to the earth 2 LinkOut To Cascade amplifiers 3 CH 1 output speakon connector Use this connector for picking up the amplified signal of CH 1 and signal for bridged configuration 4 CH2 output speakon connector Use this connector for picking up the amplified signal of CH 2 5 CH 1 output binding post Use this connector for picking up the amplified signal of CH 1 and signal for bridged configuration 6 2 output binding post Use
19. of channel 1 only The level indicator LEDs glow to indicate the presence of signal at the output terminals 13 Studiomaster PROFESSIONAL Typical Applications Stereo Mix Plus Subwoofers AMPLIFIER 1 Stereo Mode Fullrange 2 3 way system ST ACTIVE CROSSOVER Input MICROPHONES FLODA MICROPHONE STEREO KEYBOARD Fullrange 2 3 way system Subwoofer eo Onze HEADPHONE MIXER Connect the left and Right outputs of the Audio mixing console to the respective inputs of the Active Crossover Connect the Left and Right High frequency output of the active crossover to the respective input channels 1 amp 2 of amplifier 1 Inputs can be wired as per fig 1 amp 2 Input Connections for Balanced and Unbalanced Mode One number of full range loudspeaker system can be connected to each of the channels of amplifier 1 The output connectors should be wired as per fig 3 Output Connections for Stereo Parallel Mode for speakon or fig 5 for Binding Post connections Amplifier 1 will be used in stereo mode Keep the slide switch of amplifier 1 in stereo position Feed the Left low frequency output signal of the crossover to channel 1 input of amplifier 2 Inputs can be wired as per fig 1 amp 2 Input Connections for Balanced and Unbalanced Mode 14 studigmaster The high powered subwoofer system ca
20. p inside and may cause a fire To relocate the unit turn the power switch off remove the power plug from the AC outlet and remove all connecting cables Damaged cables may cause fire or electrical shock Use only thick speaker cables when connecting speakers to amplifier outputs Use of cables type 40 36 or thicker is recommended for connecting low impedance speakers to avoid power loss in the cables as heavy current flows through the cables Using other types of cables is a fire hazard Turn off all musical instruments audio equipment and speakers when connecting to this unit Use the correct connecting cables and connect as specified Always lower the volume control to minimum before turning on the power to this unit A sudden blast of sound may damage your hearing Do not use this amplifier for any purpose other than driving loudspeakers If you know you will not use this unit for a long period of time such as when going on vacation remove the power plug from the AC outlet Leaving it connected is a potential fire hazard When operating amplifier on a generator make sure it is switched OFF till generator voltages has stabilized amp then only switch ON amplifier Be sure of proper impedance of 2 4 8 ohm when used for STEREO PARALLEL configuration amp 4 8 ohm recommended when used in BRIDGE mode Studiomaster PROFESSIONAL Tips for Safe Operation The 3 core AC mains cable should be termina
21. polarized or ground ing type plug Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus Only use attachments accessories specified by the manufac turer 12 Unplug this apparatus during lightning unused for long periods of time 13 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE Studjomaster Precautions For safe operation N WARNING Installation Connect this unit s power cord only to an AC outlet of the type stated in this Owner s Manual as marked on the unit Failure to do so is a fire and electrical shock hazard Do not allow water to enter this unit or allow the unit to become wet Fire or electrical shock may result Do not place a container with liquid or small metal objects on top of this unit Liquid or metal objects inside this unit are a fire and electrical shock hazard Do not place heavy objects including this unit on top of the power cord A damaged power cord is a fire and electrica
22. t of over steering the amplifier When the amplifier is used as a subwoofer amplifier then the limiter has to be switched off to set the extra punch HF Limiter It is a protection for the amplifier against HF In case there is high amplitude HF signal at the output it shuts down the amplifier thus protecting the internal circuitry and HF drivers of a speaker system Presence of prolonged large amplitude high frequency output can damage the speakers as well as the internal circuit of the amplifier The HF limiter circuit continuously monitors the output and shuts down the amplifier if the high frequency persists for more than 10 15 seconds The HF limiter has no effect on normal music Studiomaster PROFESSIONAL Input Output Connections FIG I BALANCED INPUT CONNECTIONS FIG 2 UNBALANCED INPUT CONNECTIONS XLR XLR 1 Shield GND 1 Shield GND 3 Cold 2 Hot 2 Hot FIG 3 PARALLEL STEREO OUTPUT CONNECTIONS FIG 4 BRIDGE OUTPUT CONNECTIONS CH 1 OUTPUT CONNECTOR Negative Output Negative Output Positive Output To Speaker To Speaker SPEAKON SPEAKON FIG 5 PARALLEL STEREO BINDING POST CONNECTIONS FIG 6 BRIDGE MODE BINDING POST CONNECTIONS STEREO STEREO CH1 OUTBINDING POST CH1 OUTBINDING POST os 5 K STEREO BRIDGE VE OUTPUT STEREO BRIDGE a 08 x STEREO BRIDGE VE OUTPUT STEREO BRIDGE S CH2 OUTBINDING POST CH2 OUTBINDING POST STEREO STERE
23. ted with this AC mains plug by connecting brown red wire on live pin L black blue wire on neutral pin N and yellow green wire on earth pin The amplifier must be connected to an AC earthed mains outlet that can delivered the maximum power required The use of extension cables or adaptors should be avoided as this can jeoparadize correct power delivery to the amplifier All connections must only be carried out or changed with the amplifier switched OFF Ensure proper impedance matching while in use for BRIDGE mode applications For continuous safe operation resultant impedance of the speakers 8 ohm 4 ohm is recommen ded For 2 ohm 4 ohm applications it is recommended to use speakon connectors only Use of cable 40 36 or thicker is recommended to prevent power losses The level of input signal should not exceed the specified input sensitivities Excessive input signal levels result in over driving of input circuit which leads to saturated distorted output at speaker terminals Do not operate the amplifier with continuously blinking CLIP LED The respective volume control of the channels must be adjusted so that the output level does not clip and distort Do not obstruct the front or back of the amplifier for necessary intake of air PROFET SIONAL Studiomaster Contents Page No e Features General Description Of Product is iio reis rra REA RARE Ra EXER UR utt 6 Front Panel Controls PCa a casos
24. the unit in this condition is a fire and electrical shock hazard N CAUTION Installation Keep this unit away from the following locations Locations exposed to oil splashes or steam such as near cooking stoves humidifiers etc Unstable surfaces such as a wobbly table or slope Locations exposed to excessive heat such as inside a car with all the windows closed or places that receive direct sunlight Locations subject to excessive humidity or dust accumulation Do not place the power cord close to a heater It may melt causing fire or electrical shock Hold the power cord plug when disconnecting it from an AC outlet Never pull the cord A damaged power cord is a potential fire and electrical shock hazard Do not touch the power plug with wet hands Doing so is a potential electrical shock hazard This unit has ventilation holes at the front rear amp top to prevent the internal temperature rising too high Do not block them Blocked ventilation holes are a fire hazard In particular do not place the unit on its side or upside down place the unit in any poorly ventilated location such as a bookcase or closet other than on the dedicated rack cover the unit with a table cloth or place it on a carpet or bed Allow enough free space around the unit for normal ventilation This should be 5 cm at the sides 10 cm behind and 10 cm above If the airflow is not adequate the unit will heat u
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