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AQ-10 Operating Instructions

  

 

    Page 18

 

 

 

 

 

 

 

Changing the Gain of Your Amplifier:  Internal Adjustments! 

 

These instructions are for use by qualified personnel only.  Before any routine maintenance, 

please  ensure  that  your  amplifier  is  disconnected  from  the  mains  supply! 
 

Gain/Sensitivity Settings 
 

Adjustment  is  by  moving  a  link  on  the  input  PCB  (PCB741)  –  one  link  for  each  channel.   
Channel  A’s  link  is  number  1,  channel  B’s  is  number  2  and  so  on. 
The  gain  may  be  set  to  26,  32  (factory  default  setting)  or  36dB. 

 

 

 
Remember, setting higher gain does not change the maximum available power but changes 

the  level  of  signal  input  to  achieve  maximum  power.  In  any  case,  provided  that  the  input 
signal  is  less  than  20dBu/7.7V,  the  built  in  limiter  circuit  will  prevent  distortion  within  the 
amplifier. 

 
The gain should be set to match the signal level from the source – mixer, equaliser etc. 

Summary of Contents for AQ-10

Page 1: ...EM Acoustics Loudspeakers Building 74 Dunsfold Park Cranleigh Surrey GU6 8TB UK www emacoustics co uk AQ 10 amplifier User Manual v1 0...

Page 2: ...AQ 10 Operating Instructions Page 2...

Page 3: ...r Dynamic Amplifier Performance Measurements 10 Connecting To Your Amplifier Inputs 11 Connecting To Your Amplifier Speaker Outputs 12 Connecting To Your Amplifier Bridged Mono Operation 13 Operating...

Page 4: ...8408990 Type Designation E100 and all OEM variants of this model are manufactured in accordance with EMC Directive 2004 108 EC in compliance with the following norm s or document s Technical Regulatio...

Page 5: ...e It has been designed to meet demands for higher power and increased efficiency whilst still maintaining the renowned sonic qualities and unsurpassed reliability associated with our loudspeaker produ...

Page 6: ...nd ensure that no objects filled with liquids such as vases are placed on the equipment To completely disconnect this equipment from the AC mains disconnect the power cord from the mains circuit break...

Page 7: ...rempli des liquides comme les vases n est plac sur l quipement Pour compl tement d brancher cet quipement de la conduite principale de courant alternatif d branchez la corde de pouvoir du disjoncteur...

Page 8: ...cord For safety reasons THE EARTH LEAD SHOULD NOT BE DISCONNECTED IN ANY CIRCUMSTANCE If ground loops are encountered consult the section on connecting your amplifier on page 11 The wiring colours are...

Page 9: ...mm rack mounting systems ENSURE THERE IS ADEQUATE VENTILATION The cooling fans suck cool air in through the front and blow hot air out at the rear of the unit through the ventilating grills The front...

Page 10: ...eed their RMS power rating The AQ 10 amplifier has been designed to match this requirement and can deliver huge levels of power for short durations In order to protect themselves and the loudspeakers...

Page 11: ...The cable should still be twin core plus screen PIN1 Screen connected to the chassis of the unbalanced equipment or left disconnected at the unbalanced end PIN2 Hot signal PIN3 Cold ground 0V NOTE Th...

Page 12: ...t be joined together as they are not both at ground potential Connecting them together will damage the amplifier and void the warranty As the currents involved are very high and to ensure best perform...

Page 13: ...r channel pair C D The method is the same for both channel pairs Supply signal to Channel A or C input only and push in the appropriate rear panel switch marked BRG A B or BRG C D Use Channel A or C s...

Page 14: ...subsonic or VHF levels 4 Attenuation Controls These are analogue controls allowing precise level settings Note that in bridged mono mode some controls may be inactive 5 Link LED This indicates if the...

Page 15: ...spill water or other liquids into or on the unit and do not operate the unit while standing in liquid Do not block fan intake or rear ventilation outlets or operate the unit in an environment that cou...

Page 16: ...4 Input XLR sockets Connect signal inputs to these sockets wired pin 2 hot 3 cold 1 ground For sensitivity and impedance of these inputs please see the specifications on page 18 5 Bridged mono switch...

Page 17: ...st debris on the finger guards they can be cleaned with a dry paintbrush and a vacuum cleaner The casework of the amplifier may be cleaned with a lightly dampened cloth do not use any solvents as they...

Page 18: ...t PCB PCB741 one link for each channel Channel A s link is number 1 channel B s is number 2 and so on The gain may be set to 26 32 factory default setting or 36dB Remember setting higher gain does not...

Page 19: ...Boxed shipping 14 0 Additional Specifications Parameter Units AQ 10 Input Impedance Active Balanced Ohms 20k Input CMRR dB 60 SNR dB 105 Damping Factor 1kHz 8 ohms 400 Signal Limiters Present Yes Pro...

Page 20: ...16 6 504 528 566 660 120 4 4 2 7 8 14 0 28 8 504 551 628 816 120 2 4 2 9 0 17 2 38 2 504 564 668 936 No Sig l Quiescent Light Crest Factor of 7 8 18dB Average Crest Factor of 4 8 14dB Heavy Crest Fact...

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