QC4.4 - Axiom Pro Audio
Contents
1. E x E o E N Q E Q single Bridge Bridge single OUTIimit dB Speaker Handling ZNOM 16 0 11 2 14 3 10 8 2 oTeramrererere ew ee EI AENEIS 0 13 0 o5 125 so 7 a To protect the high frequency drivers from dangerous feedbacks in live environments we suggest to set the limiter 3 dB under the calculated value SOME TIPS e When you push up the volume of your system you can notice that the low mid content of the program is usually limited before the high mid content This is due to the fact that low frequencies activate the limiter before high frequencies with the result that the system can sound very harsh In order to restore the original sound balance you can set the HF driver limiter threshold a few dBs usually 3 6 below the calculated value 17 World Headquarter Via alla Ruenia 37 43 64027 Sant Omero TE ITALY Tel 39 0861 81241 Fax 39 0861 887862 www proel com REV 40 15 CODE 96MAN01052. 3 TERMINATE the last device in the network connection 4 Switch on the first device keeping pressed at least for 5 seconds the ID or PRESET button on the control panel 5 Leaving the previous device switched on repeat the previous operation on the next device until the latest device is turned on The Assign ID procedure for a device makes the internal network controller to perform two operations reset the current ID search the first free ID in the network starting from ID 1 If no other devices are connected and powered on the controller assume ID 1 that is the first free ID otherwise it searches the next one left free These operations ensure that every device has it s own unique ID if you need to add a new device to the network you simply repeat the operation of step 4 Every device maintains its ID also when it is turned off because the identifier is stored in the internal memory and it is cleared only by another Assign ID step as explained above This means that if your network is made always of the same devices the assigning ID procedure must be executed only the first time the system is turned on For more detailed instruction about PRONET see the PRONET USER S MANUAL included with the software To control the DSP features of QC amplifiers the PRONET software must be used at least the first time you setup the whole audio system Once the audio system is properly set the QC amplifiers can opera
3. 2 and QC4 4 This is the amplifier mains supply cord Connect the power cord to an electrical outlet complying with the amplifier s power supply specifications Be sure that your amplifier is off before plugging the mains cord into an electrical outlet PRONET software has been developed in collaboration with sound engineers and sound designers in order to offer an easy to use tool to setup and manage your audio system With PRONET you can visualize signal levels monitor internal status and edit all the parameters of each connected device Download the PRONET app from the AXIOM website at http www axiomproaudio com clicking on downloads section of the product To connect QC amplifiers to a PC running PRONET control software the network connectors on the front panel and PROEL USB2CAN or USB2CAND converters optional must be used The first time you connect a device with the USB2CAN converter Windows 5 will ask you to install the driver files which you can find in the Driver folder within the Pronet application folder by default is C Program Files Proel Pronet Driver or if you changed it lt your path gt Driver Please refer also to Installation and Drivers paragraphs in the Pronet documentation The PRONET NETWORK is based on a robust reliable and fast communication protocol called CANBUS The devices in a PRONET NETWORK are connected together with a linear bus topology The USB2CAN converter must be connected
4. with an inner load resistance especially in a long run cabling press this switch if you want to terminate the unit The yellow LED indicates the termination status ON when terminated OFF when not terminated 6 ID button This button is used to assign an ID number to the amplifier If you press and hold this button when powering the amplifier ON you ll force the internal DSP to re assign an ID to the unit for the PRONET remote control operation See PRONET section further in this manual Note for a correct operation keep the ID button pressed until the internal relais connect the outputs or wait at least 10 seconds before releasing it 7 COM indicator The COM LED glows when the correct PRONET network communication is active 8 PARALLEL mode indicator This yellow LED glows when the channel pair 1 2 or 3 4 is in parallel mode 9 BRIDGE mode indicator This yellow LED glows when the channel pair 1 2 or 3 4 is in bridge mode position The Blue LED indicates amplifier has been turned on 10 Channel SIGNAL LIMIT Indicator This LED glows in GREEN color to show the presence of the signal at the correspondent amplifier channel This LED glows in RED color when the DSP is limiting the channel s output or when the channel input is clipping NOTE in case of input clipping you have to reduce the input signal in the signal chain before the amplifier input 11 Channel PROTECT Indicator RED LED glows when the correspondent channel is in
5. QC series 4 2 QC4 4 QC2 4 Digitally Controlled Class D Power Amplifiers with SMPS amp DSP This device complies with part 15 of the FCC rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation CAUTION Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment NOTE This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment o and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver e Connect the equipment i
6. T PANEL 5 6 Routing 5 5 15 REAR PANEL 6 7 DSP Features in brief 16 EXAMPLE i 8 Speaker protection setting 16 EXAMPLE B 2 RR Rhen 8 EXAMPLE ie 9 EXAMPLE ocak wwe xn m eden e e 9 SAFETY AND PRECAUTIONS 10 IN CASE OF FAULT eve ER ex e Res 10 TROUBLESHOOTING scs RR RR 10 CE CONFORMITY 11 PACKAGING SHIPPING AND COMPLAINT 11 WARRANTY AND PRODUCTS RETURN 11 TECHNICAL SPECIFICATIONS MODEL Qc4 2 Qc4 4 QC2 4 Channels 4 single or 2 bridge 2 single or 1 bridge Power 8 ohm 250W 500 W 1000 W Power 4 ohm 500 W 1000 W 2000 W Power BRIDGE 8 ohm 1000 W 2000 W 4000 W Frequency response 20 Hz 20 kHz Input Sensitivity adjiustable 3 dBu 6 dBu 3 dBu by DSP Gain fixed 32 dB 32 dB 38 dB Input Impedance 30 Kohm bal 15 Kohm unbal Input Connectors INPUT COMBO XLR F JACK LINK XLR M Output Connectors NL4 Speakon Controls Level GND lift Terminate ID LED Indicators Signal Limit Protection Bridge Parallel Com Terminate Power Signal Processing CORE processing 96kHz 40bit floating point SHARC DSP 24 bit AD DA converters Signal Latency 1 6 mS Cooling Variable speed DC fans Protections Clip Limiter Short circuit DC voltage Over heating Damping Factor gt 500 8 ohm Slew R
7. ate 50 V uS S N Ratio gt 105 dB unweighted THD N lt 0 5 Power Supply 230 V or 120 V 50 60 Hz Max Consumption 2900 W 5300 W 1800 W Rated Consumption 800 W 1350 W 600 W Weight 11 Kg 24 3 Ib 12 Kg 26 5 Ib Dimensions W x H x D 483 x 89 383 mm 19 x 3 5 x 16 2 inch 483 x 89 x 463 mm 19 x 3 5 x 18 2 inch Standard EIA 1KHz THD lt 1 Rated consumption is measured with pink noise with a crest factor of 12 dB this can be considered a standard music program With PFC circuit AXIOM SETUP AND RACK MOUNTING FIG 1 2 RECOMMENDED INSTALLATION RIG ON 8U OPEN RACK FRONT REAR COLD AIR HOT AIR OON EVENTUAL INSTALLATION WITH CLOSED BACK ON 10U closed RACK HOT AIR FRONT REAR closed COLD AIR LOUDSPEAKER CABLE gt gt gt PROEL flexible multiwire loudspeaker cable CE gt gt gt PROEL flexible professional speaker cable a Loudspeaker Line Losses maximum permissible line lengths for 0 5dB losses voltage or spl 4ohm load 8ohmload Wire section data PROEL recommended cables feet meter feet meter mm AWG 2 wires 4 wires 2 wires Fire resistant 125 40 250 80 6 0 10 HPC626 75 25 150 50 40 12 HPC624 HPC644 HPC624FRS 50 17 5 100 35 2 0 14 HPC620 HPC640 HPC620FRS 30 10 60 20 15 16 HPC610 HPC610FRS this is a short extraction of the wide assortment of cables available from PROEL please visit our website at www proelgr
8. eneral 13 14 17 Channel 2 4 SPEAKON output Accepts a male Neutrik Speakon NL4FX connector wired in this way PIN 1 connected to POSITIVE output of Channel 2 4 e PIN 1 connected to NEGATIVE output of Channel 2 4 e PIN 2 and 2 NOT connected This is the amplified output of the signal coming from 2 4 input if the amplifier is set in STEREO mode or the signal coming from 1 2 or 3 4 inputs if the amplifier is set in PARALLEL mode Always connect a loudspeaker with a minimum impedance of 4 ohm or more 18 BRIDGE SPEAKON output Accepts a male Neutrik NL4FX connector wired in this way e PIN 1 connected to in phase Channel 1 3 e PIN 1 connected to out phase Channel 2 4 e PIN 2 and 2 NOT connected This is the amplified output of the signal coming from 1 2 3 4 input if the amplifier is set in BRIDGE mode Always connect a loudspeaker with a minimum impedance of 8 ohm or more NOTE Use this output alone and only with BRIDGE mode setting 19 MAINS socket QC2 4 This is the amplifier mains socket NEUTRIK type NAC3MPX One NAC3FX W plug is supplied in the package the customer has to assemble the mains cable with a proper mains plug according to the country standards The mains cable must be connected only to an electrical outlet complying with the amplifier s power supply specifications See assembly instruction downloadable from NEUTRIK WEB site at http www neutrik com 20 MAINS cord QC4
9. epaired Proel S p A is not responsible for any direct damage or indirect damage caused by product defectiveness INSTALLATION AND DISCLAIMER Proel products have been expressly designed for audio application with signals in audio range 20Hz to 20kHz Proel has no liability for damages caused in case of lack of maintenance modifications improper use or improper installation non applying safety instructions e These amplifiers are adapted a properly ventilated standard professional 19 rack These units feature ventilation holes on the front and back panels Absolutely do not obstruct the ventilation holes Blocked ventilation can cause damages and fire Do not locate sensitive high gain equipment such as mixer preamplifiers recorders or AD DA conversion units directly above or below these amplifiers Because these amplifiers have a high power density it ha a strong magnetic field which can induce hum into unshielded devices that are located nearby If an equipment rack is used we recommend locating the amplifier in the bottom of the rack and the mixer preamplifier or other sensitive equipment at the top Proel S p A reserves the right to change these specifications at any time without notice e Proel S p A declines any liability for damages to objects or persons caused by lacks of maintenance improper use installation not performed with safety precautions and at the state of the art POWER SUPPLY AND MAINTENANCE e Clea
10. ergonomic and functional design with removable dust filters for an easy maintenance in all conditions of use and therefore extensive durability The protection system includes thermal protection short circuit protection high frequency protection and CLIP LIMITER circuit 1 Power switch and Power indicator Amplifier is ON when the switch is in the 2 RESET BUTTON This button can be used to reset the QC amplifier s DSP for service operations Use a paper clip rod to press and hold this button when powering the amplifier ON this will perform a reset of the CORE DSP and set it back to the factory preset 1 D Default all the stored presets are cancelled This operation can be useful in case you cannot connect the QC amplifier to a PC for checking and modifying the DSP parameters but you need to use it anyway as a standard amplifier Remind that QC amplifiers have always a 1 6mS latency also if the internal CORE DSP is completely flat 3 PRONET Network IN connector This is a standard RJ45 CAT5 connector used for transmission of remote control data over long distance or multiple unit applications See PRONET section further on this manual 4 PRONET Network OUT connector This is a standard RJ45 CAT5 connector used for transmission of remote control data over long distance or multiple unit applications See PRONET section further on this manual 5 TERMINATE switch When connected to a PRONET network the last device must be terminated
11. g a balanced cable for one channel and an unbalanced one for the other 14 LINK This is a male XLR connector is connected in parallel with the respective INPUT LINK is wired in the same way 15 GND LIFT This switch lift the ground of the balanced audio inputs from the earth ground of the amplifier If you have HUM noise problems on one or more loudspeakers try to change the position of these switches 16 Channel 1 or 3 SPEAKON output Accepts a male Neutrik Speakon NLAFX connector wired in this way PIN 1 connected to POSITIVE output of Channel 1 3 PIN 1 connected to NEGATIVE output of Channel 1 3 PIN 2 connected to POSITIVE output of Channel 2 4 PIN 2 connected to NEGATIVE output of Channel 2 4 If you use 2 wire cable 1 1 you run to the speaker the amplified output of the signals coming from inputs 1 or 3 If you use a 4 wire cable 1 1 2 2 you run to the speaker STEREO mode the amplified outputs of the signal coming from 1 3 input 1 1 and from 2 4 input 2 2 PARALLEL mode the amplified outputs of the signals coming from 1 2 or 3 4 inputs 1 1 and 2 2 carry the same signal In both modes using a single cable you can connect a BI AMP loudspeaker or a SUB SAT speaker system Always connect a loudspeaker with a minimum impedance of 4 ohm or more NOTE Use only loudspeaker enclosure cables never signal cables i e those normally used for microphones instruments and audio equipment in g
12. ixed switching frequency the PWM Pulse Width Modulation output stage of DA modules uses a variable switching frequency according to the input signal level This technology offers performances far above most of the products currently available on the market better sound definition high fidelity reproduction of any frequency of the audio range higher dynamics at any signal level with low distortion even at very high powers The superior sound quality can be compared with top of the range AB class analog systems while DA modules thanks to the use of SMPS and Class D feature very compact size and light weight efficiency above 90 and negligible heat dissipation The very high efficiency levels result also in a significant reduction in the energy waste associated with large installations a noticeable reduction in operating costs and a direct benefit to the environment Featuring high power levels in a lightweight and compact chassis the QC amplifiers are much easier and more economical to transport than conventional models and this in turn makes them even more environmentally friendly In the top of the range model QC2 4 the use of PFC Power Factor Correction technology used for the power supply stage guarantees that the performance of the amplifier is always stable even when the voltage is not Regardless of any eventual fluctuations of the power supply the QC2 4 will always be able to deliver the highest level of power QC amplifiers feature an
13. mum EXAMPLE B 40 minimum 4Q minimum s woofer 2 double subwoofer 40 40 minimum signal from a mixer with LR output QC internal routing PARALLEL MODE DSP CH1 DSP CH2 PARALLEL MODE OUT3 WF1 OUTA WF2 5 HF driver 40 minimum LF woofer 40 minimum BIAMP loudspeaker NA JO n 40 minimum 40 minimum LR output c alo signal from a mixer wit internal rou STEREO MOD subwoofer 80 minimum EXAMPLE C NA JO 40 minimum 40 minimum e CAUTION before using this product read carefully the following safety instructions Take look of this manual entirely and preserve it for future reference When using any electric product basic precautions should always be taken including the following To reduce the risk close supervision is necessary when the product is used near children Protect the apparatus from atmospheric agents and keep it away from
14. n only with dry cloth e Check periodically that the slots for its proper ventilation and heating dissipation are not obstructed by dust remove the dust using a dry brush or a compressed air gun The QC4 2 QC4 4 and QC2 4 amplifiers of Proel have been designed with CLASS I construction and must be connected always to mains socket outlet with a protective earth connection the third grounding prong Before connecting the product to the mains outlet make certain that the mains line voltage matches that shown on the rear of the product a tolerance of up to 10 is acceptable To disconnect these equipment from the AC Mains disconnect the power supply cord plug from the AC mains outlet e THE REPLACEMENT OF FUSES INSIDE THE APPARATUS MUST BE MADE ONLY BY QUALIFIED PERSONNEL e CHECK THE CONDITION OF THE PROTECTION FUSE ACCESSIBLE OUTWARD ONLY WITH THE APPARATUS SWITCHED OFF AND DISCONNECTED FROM THE MAINS LINE OUTLET REPLACE THE PROTECTION FUSE ONLY WITH SAME TYPE AS SHOWN ON THE PRODUCT e IF AFTER THE SUBSTITUTION THE FUSE INTERRUPTS AGAIN THE APPARATUS WORKING DO NOT TRY AGAIN THEN CONTACT THE PROEL SERVICE CENTRE 11 12 Thank you for having chosen PROEL product QC series is based on PROEL DA amplifiers a new generation of digitally controlled Class D power modules with Switch Mode Power Supply SMPS featuring an innovative technology Unlike most of the competitors in this range which use a f
15. n the connections or in the supplied connecting cables Liquids have spilled inside the product The product has fallen and been damaged The product does not appear to operate normally or exhibits a marked change in performance The product has been lost liquids or gases or the enclosure is damaged Do not operate on the product it has no user serviceable parts inside refer servicing to an authorized maintenance centre No Power The amplifier s POWER switch is off Make sure the mains AC outlet is live check with a tester or a lamp Make sure the mains plug is securely plugged into mains AC outlet Is the input LEVEL control for the channel turned up 15 the SIGNAL LED illuminated If not check if your signal level is too low or check the signal cable mixer and other equipment setting and cabling e Are you sure your signal cables works properly check it using a cable tester or replacing with a new one e 5 the SPEAKON cable connector correctly inserted turn it clockwise until it clicks e Are you sure your power cable works properly check it using a cable tester or replacing with a new one Distorted Sound e Input signal level is too high Turn down your level controls NOTE The loudspeakers should never be operated at a level which causes the amplifier Clip LEDs to illuminate constantly Different channel e Check if are using a balanced cable for one channel and an unbalanced one for the other as this would cau
16. ning of the manual show some of the many configurations that can be used 15 16 In the BLOCK DIAGRAMS below you can see the CORE DSP processing paths NOTE the DSP INPUT section is always fully editable by the user but the OUTPUT section can have restrictions for FACTORY or PROTECTED presets In those presets some parameters can t be edited or viewed For STEREO and PARALLEL configurations ganging option is available for input and output to pair easily the sections of the CORE DSP processed channels user parameters for each INPUT CORE DSP section level phase 5 band parametric or shelving filters Replacing a professional speaker is an expensive cost and reducing this risk is good so many users want to know how 5 band parametric or shelving filters Dynamic Eq filters parametric shelving to set a limiter properly for the speaker protection The QC amplifiers like the loudspeaker processor can protect the speaker from excessive heating using the OUTPUT LIMITER though it is not possible to protect a speaker from every possible cause that occurs to damage it over excursion very unnatural sound signals or an erroneous cross over filter setting and so on could damage a speaker To protect a speaker from over heating you have to know some its technical data 1 The speaker power handling PAES measured with the AES2 1984 r2003 standard AES Recommended Practice Specification of loudspeaker comp
17. nto an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help This marking shown on the product or its literature indicates that it should not be disposed with other household wastes at the end of its working life To prevent possible harm to the environment or human health from uncontrolled waste disposal please separate this from other types of wastes and recycle it responsibly to promote the sustainable reuse of material resources Household users should contact either the retailer where they purchased this product or their local government office for details of where and how they can take this item for environmentally safe recycling Business users should contact their supplier and check the terms and conditions of the purchase contract This product should not be mixed with other commercial wastes for disposal The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated A 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 accompanying the appliance The information contained in this publication has been caref
18. onents used in professional audio and sound reinforcement usually it is indicated in the speaker technical data in Wags this standard is actually the best method to know the power handling capability of the speaker for a standard music program In case of a group of speaker connected to the same channel you have to consider the whole power handling 2 The nominal impedance Zyom of the speaker and or the resulting nominal impedance of the group of speaker connected at the same amplifier channel typically 4 or 8 ohm So to calculate the limiting threshold a simplified expression must be executed Simplified equation to calculate the output limiter threshold Pars ZNOM y Pmax 21040 OUTlimiter 20 0910 where OUTlimiterag output limit threshold in dB relate to the maximum power always negative Pars Speaker power handling in Wags Speaker nominal impedance usually 4 or 8 0 Pyax Maximum continuous output power of the amplifier inW 2104 Impedance of the load for the specified example using a QC4 2 capable of deliver 500W at 40 we want to reduce the power for a speaker capable of handling 100W at 82 so v100 8 4dB v500 4 OUTlimiter 20 0910 5 c o o0 e o0 Z gt 4 gt 2
19. oup com CONNECTIONS FIG 3 2 hot 1 ground 2 cold 3 cold 3 cnt 1 ground 2 2 hot INPUT LINK Balanced male XLR Balanced female XLR SPEAKER POWER OUTPUTS PROEL code NL4FX Neutrik NL4 Speakon Cable Connector OUTPUT 2 OUTPUT BRIDGE OUTPUT 1 channel 2 negative bridge negative channel 2 positive channel 1 negative bridge positive channel 2 negative channel 1 positive NOTE channels 3 and 4 are equal to channel 1 and 2 respectively DIMENSIONS FIG 4 43 4 17 0 inch 8 9 3 5 inch p 48 3 cm 44 8 cm 19 0 inch 17 6 inch 2 4 36 8 XGA 14 5 inch 2 4 2 0 4 P d 4 2 cm 1 65 inch AXIOM FRONT PANEL FIG 5 8 9 6 8 9 11 PARALLEL BRIDGE PARALLEL BRIDGE 11 prt prot iw PARALLEL REAR PANEL FIG 6 INPUT IMPEDANCE INPUT IMPEDANCE 10K BALANCED 10K BALANCED OUTPUTS B pe BRIDGE MIN LOAD 40 MIN sa 80 MIN 40 lt OUTPUTS 1 4 1 1 CH3 a CH4 B ua CH4 CH4 BRIDGE MIN LOAD 40 MIN LOAD 80 MIN LOAD 40 MAINS QC4 2 and QC4 4 AXIOM signal from mixer with LR output QC internal routing STEREO MODE subwoofer subwoofer 40 minimum 40 mini
20. protect mode for one of the following reasons e The heatsink reaches a temperature above the normal working limit e There is a short circuit at the amplifier output wires e The amplifier output stages are faulty Consequently the channel is muted until the reason of fault is removed NOTE When the channel pair operates in PARALLEL and BRIDGE mode SIGNAL LIMIT and PROTECT LED indicators of the channel pairs 1 2 or 3 4 illuminate simultaneously 12 Input Channel LEVEL Control This control reduces the level of the signal sent to the correspondent channel after the A D conversion and before any channel sum PARALLEL or BRIDGE modes and any DSP processing The reduction ranges from ce fully closed the signal is completely attenuated to 0 fully open nominal level 13 INPUT This is a female combo connector which accepts a XLR or a JACK plug from almost any type of equipment with a balanced or unbalanced outputs The XLR input is wired as follows Pin 1 shield or ground Pin 2 positive or hot Pin 3 negative or cold The JACK input is wired as follows Tip positive or hot Ring negative or cold Sleeve shield or ground When connecting an unbalanced signal wire them as follows Pin2 Tip positive or hot Pin 1 3 Sleeve shield or ground NOTE whenever possible use always balanced cables Unbalanced lines may also be used but may result in noise over long cable runs In any case avoid usin
21. s that could cause permanent hearing loss Exposure to extremely high noise levels may cause permanent hearing loss Individuals vary considerably in susceptibility to noise induced hearing loss but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a period of time The U S Government s 6 Occupational Safety and Health Administration OSHA has specified the 4 permissible noise level exposures shown in the following chart According to 5 OSHA any exposure in excess of these permissible limits could result in some hearing loss To ensure against potentially dangerous exposure to high sound pressure levels it is recommended that all persons exposed to equipment 15 Duration Per Day Sound Level dBA Typical In Hours Slow Response Example Duo in small club Subway Train Very loud classical music capable of producing high sound pressure levels use hearing protectors while 1 Traffic noise the equipment is in operation Ear plugs or protectors in the ear canals or over the ears must be worn when operating the equipment in order to prevent 0 25 or less Loudest parts at a rock concert permanent hearing loss if exposure is in excess of the limits set forth here Keep your s attention that children and pets are more susceptible to excessive noise levels e Incase of fault or maintenance this product should be inspected only by qualified service personnel when There is a flaw either i
22. se a level considerable difference in channel levels e Be sure that your loudspeaker system is fully connected and both loudspeakers have the same impedance Noise Hum e Enable GND LIFT button on rear panel if the problem persist press all GND LIFT buttons for all system s amplifiers e Whenever possible preferably use only balanced cables Unbalanced lines may also be used but may result in noise over long cable runs e Sometimes it helps to plug all audio equipment into the same AC circuit so they share a common ground Sound and the e The amplifier temperature protections trips re locate the amplifier in a more ventilated location Amplifier gets too hot No Sound and e Could be a possible short circuit at the amplifier loudspeakers outputs the speaker s inputs or in the cabling Locate Protection trip and remove the short circuit LED PROTECT always The impedance of the loudspeakers connected is too low Use a speaker with a minimum impedance of 40 80 in on the Bridge mode e If load connected the protection trips the same a DC voltage has been detected in the amplifier s output circuit and you have to contact you nearest service assistance center to repair the amplifier CE CONFORMITY Proel products comply with directive 2014 30 CE EMC as stated in EN 55103 1 and EN 55103 2 standards and with directive 2014 35 CE LVD as stated in EN 60065 standard e Under the EM disturbance the ratio of signal noi
23. se will be changed above 1008 PACKAGING SHIPPING AND COMPLAINT This unit package has been submitted to ISTA 1A integrity tests We suggest you control the unit conditions immediately after unpacking it If any damage is found immediately advise the dealer Keep all unit packaging parts to allow inspection Proel is not responsible for any damage that occurs during shipment Products are sold delivered ex warehouse and shipment is at charge and risk of the buyer Possible damages to unit should be immediately notified to forwarder Each complaint for package tampered with should be done within eight days from product receipt WARRANTY AND PRODUCTS RETURN e Proel products have operating warranty and comply their specifications as stated by manufacturer e Proel warrants all materials workmanship and proper operation of this product for a period of two years from the original date of purchase If any defects are found in the materials or workmanship or if the product fails to function properly during the applicable warranty period the owner should inform about these defects the dealer or the distributor providing receipt or invoice of date of purchase and defect detailed description This warranty does not extend to damage resulting from improper installation misuse neglect or abuse Proel S p A will verify damage on returned units and when the unit has been properly used and warranty is still valid then the unit will be replaced or r
24. solate all interno dell involucro del prodotto che possono avere una intensit sufficiente a costituire rischio di scossa elettrica alle persone Il punto esclamativo in un triangolo equilatero intende avvertire l utilizzatore per la presenza di importanti istruzioni per l utilizzo e la manutenzione nella documentazione che accompagna il prodotto Le informazioni contenute in questo documento sono state attentamente redatte e controllate Tuttavia non assunta alcuna responsabilit per eventuali inesattezze Tutti i diritti sono riservati e questo documento non pu essere copiato fotocopiato riprodotto per intero o in parte senza previo consenso scritto della PROEL PROEL si riserva il diritto di apportare senza preavviso cambiamenti e modifiche estetiche funzionali o di design a ciascun proprio prodotto PROEL non assume alcuna responsabilit sull uso o sul l applicazione dei prodotti o dei circuiti qui descritti FCC COMPLIANCE NOTICE 2 INSTALLATION AND DISCLAIMER 11 TECHNICAL SPECIFICATIONS 3 POWER SUPPLY AND MAINTENANCE 11 SETUP AND RACK MOUNTING FIG 1 2 4 GENERAL INFORMATION 12 LOUDSPEAKER 4 CONTROLS AND CONNECTIONS 12 CONNECTIONS FIG 3 5 curia ks 14 DIMENSIONS 4 5 QC SETUP INSTRUCTIONS 15 FRON
25. te alone without the PC control software All the features of the built in CORE DSP are described in the PRONET user s manual included with the software see HELP menu so in this manual only a few peculiarity of the QC amplifiers architecture are explained To start it s important to understand QC signal routing Each QC amplifier has 2 or 4 physical inputs each of them supplied with a link connector The link connectors are typically used to route physically the signal using cables to another amplifier but they can be used also to route the signal to other channels of the same amplifier as shown in some examples Each analog input goes directly to the AD converter and after the conversion the signal can be attenuated digitally by the input channel level control 12 on the front panel Depending on the selected operation STEREO MODE channel pair 1 2 STEREO MODE channel pair 3 4 IND O gt O DSP CH1 OUT1 IN3 O DSP CH3 OUT3 Gain Reduct Gain Reduct IN2 O p O DSP CH2 OUT2 INA O gt O DSP CH4 OUT4 PARALLEL MODE channel pair 1 2 PARALLEL MODE channel pair 3 4 BRIDGE BRIDGE OUT OUT mode the input signals feed the amplifier inputs individually or in pairs 1 2 and 3 4 The following figures shows each operating mode NOTE channels 3 amp 4 are present only in 4 channel models The operating mode can be selected from the device panel SETUP CONFIGURATION option on the PRONET software The examples at the begin
26. to the network input of the first device the network output of the first device is connected to the input of the second and so For the network connections simple RJ45 cat 5 or cat 6 ethernet cables can be used please don t confuse a ethernet network with a PRONET network these are completely different and must be fully separated also both use the same kind of cable The beginning and the end of a PRONET NETWORK must be terminated Each side must be terminated pressing the TERMINATE switch on the last device All devices between these two points must have the TERMINATE switch lifted One side can be terminated using the USB2CAN converter or using the USB2CAND with the TERMINATE switched on See also PRONET EXAMPLE FIG 6 at page 6 Assign the ID number To work properly in a PRONET network each connected device must have a unique identifier number called ID By default the USB2CAN converter connected to the PC controller has ID 0 and there can be only one PC controller Every other device connected must have its own unique ID equal or greater than 1 in the network cannot exist two devices with the same ID An ID number is assigned automatically to each devices when they are turned on for the first time connected to a network In order to correctly assign a new available ID to each device for working properly in a Pronet network follow these instructions 1 Switch off all the devices 2 Connect them correctly with the network cables
27. ully prepared and checked However no responsibility will be taken for any errors rights are reserved and this document cannot be copied photocopied or reproduced in part or completely without written consent being obtained in advance from PROEL PROEL reserves the right to make any aesthetic functional or design modification to any of its products without any prior notice PROEL assumes no responsibility for the use or application of the products or circuits described herein Il marchio riportato sul prodotto o sulla documentazione indica che il prodotto non deve essere smaltito con altri rifiuti domestici al termine del ciclo di vita Per evitare eventuali danni all ambiente si invita l utente a separare questo prodotto da altri tipi di rifiuti e di riciclarlo in maniera responsabile per favorire il riutilizzo sostenibile delle risorse materiali Gli utenti domestici sono invitati a contattare il rivenditore presso il quale stato acquistato il prodotto o l ufficio locale preposto per tutte le informazioni relative alla raccolta differenziata al riciclaggio per questo tipo di prodotto Gli utenti aziendali sono invitati a contattare il proprio fornitore verificare i termini e le condizioni del contratto di acquisto Questo prodotto non deve essere smaltito unitamente ad altri rifiuti commerciali Il simbolo del lampo con freccia in un triangolo equilatero intende avvertire l utilizzatore per la presenza di tensioni pericolose non i
28. water rain and high humidity places This product should be site away from heat sources such as radiators lamps and any other device that generate heat This product should be located so that its location or position does not interfere with its proper ventilation and heating dissipation Care should be taken so that objects and liquids do not go inside the product The product should be connected to a power supply mains line only of the type described on the operating instructions or as marked on the product Connect the apparatus to a power supply using only power cord included making always sure it is in good conditions WARNING The mains plug is used as disconnect device the disconnect device shall remain readily operable Do not cancel the safety feature assured by means of a polarized line plug one blade wider than the other or with a earth connection Make sure that power supply mains line has a proper earth connection Power supply cord should be unplugged from the outlet during strong thunderstorm or when left unused for a long period of time Do not place objects on the product s power cord or place it in a position where anyone could trip over walk on or roll anything over it Do not allow the product to rest on or to be installed over power cords of any type Improper installations of this type create the possibility of fire hazard and or personal injury This product may be capable of producing sound level
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