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1. SAFETY PRECAUTIONS

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 Be sure to read the instructions in this section carefully before use.
 Make sure  to observe  the instructions in this manual as the conventions of safety symbols and messages
 regarded as very important precautions are included.
 We also recommend you keep this instruction manual handy for future reference.

Safety Symbol and Message Conventions

Safety  symbols and messages  described  below are used in this manual  to prevent  bodily injury and  property 
damage  which  could  result  from  mishandling.  Before  operating  your  product,  read  this  manual  first  and
understand the safety symbols and messages so you are thoroughly aware of the potential safety 

Indicates a potentially hazardous situation which, if mishandled, could
result in death or serious personal injury.

Indicates a potentially hazardous situation which, if mishandled, could
result in moderate or minor personal injury, and/or property damage.

When Installing the Unit

   Do not  expose  the unit   to rain or an  environment
    where it may be splashed by water or  other liquids, 
   as doing so  may result in fire or electric shock.

   Use the unit only with  the voltage  specified  on the
   unit.  Using  a  voltage  higher  than  that  which  is
   specified may result in fire or  electric shock.

   Do not cut, kink, otherwise damage   nor modify the
   power  supply  cord.  In  addition,  avoid  using  the
   power cord in close proximity to heaters,  and never
   place heavy objects -- including the unit   itself -- on 
   the  power  cord,  as  doing so may result  in  fire or  
   electric shock.

 Be sure  to replace  the unit's   terminal  cover  after
 connection  completion.  Because  high  voltage   is
 applied to the speaker terminals, never touch these 
 terminals to avoid electric shock.

 Be  sure  to  ground  to  the  safety   ground  (earth)
 terminal to avoid electric shock. Never  ground to a 
 gas pipe as a catastrophic disaster may result.

 Avoid  installing  or  mounting  the  unit  in  unstable
 locations, such  as  on a rickety   table   or  a slanted

surface.  Doing  so  may  result  in  the  unit   falling

 down,   causing   personal   injury  and/or  property 
 damage.

When the Unit is in Use

   Should  the  following  irregularity  be  found  during 
   use, immediately switch  off  the  power, disconnect
   the  power  supply   plug  from  the  AC  outlet  and 
   contact your nearest sound choice dealer. Make no
   further attempt  to operate the unit in this   condition 
   as  this may cause fire or electric  shock.
     If  you  detect  smoke  or  a strange  smell coming
     from the unit.
     If water or any metallic object gets into the unit
     If the unit falls, or the unit case breaks
     If the power supply cord is damaged (exposure of
     the core, disconnection, etc.)
     If it is malfunctioning (no tone sounds.)

   To prevent  a fire or electric  shock, never open  nor
   remove  the  unit  case  as  there  are  high  voltage 
   components  inside  the  unit.  Refer all servicing to
   your nearest 

 dealer.

sound choice

 Do  not  place  cups,  bowls,  or other containers   of
 liquid  or  metallic  objects on top of the unit. If  they 
 accidentally spill  into the unit, this may cause a fire 
 or electric shock.

  Do   not   insert    nor   drop    metallic    objects   or 
  flammable  materials  in  the   ventilation slots  of the
  unit's  cover,  as  this  may  result   in  fire  or electric
  shock.

Summary of Contents for 2120A

Page 1: ...in the optimum resultsfrom this unit We also recommend that you keep this manual handyfor future reference 2 CHANNEL AMPLIFIER 2120A CH1 ON OFF CH 2 VOLUME 1 2 3 4 5 6 7 8 9 10 0 CH 1 VOLUME 1 2 3 4 5 6 7 8 9 10 0 CLIP PROT TEMP CH2 SIGNAL CLIP PROT TEMP SIGNAL POWER 2120A 2 CHANNEL AMPLIFIER ...

Page 2: ...UTIONS 3 2 GENERAL DESCRIPTION 5 3 FEATURES 5 4 NOMENCLATURE AND FUNCTIONS 4 1 Front Panel 2U 6 4 2 Rear Panel 2U 7 5 CONNECTIONS 6 7 APPLICATIONS 10 8 BLOCK DIAGRAM 11 9 SPECIFICATIONS 12 10 DIMENSIONAL DIAGRAM 13 8 9 MACHINE OPERATION ...

Page 3: ...g so may result in fire or electric shock Be sure to replace the unit s terminal cover after connection completion Because high voltage is applied to the speaker terminals never touch these terminals to avoid electric shock Be sure to ground to the safety ground earth terminal to avoid electric shock Never ground to a gas pipe as a catastrophic disaster may result Avoid installing or mounting the ...

Page 4: ...When the Unit is in Use Do not place heavy objects on the unit as this may cause it to fall or break which may result in personal injury and or property damage In addition the object itself may fall off and cause injury and or damage Make sure that the volume control is set to minimum position before power is switched on Loud noise produced at high volume when power is switched on can impair heari...

Page 5: ...S these sleek attractive units provide a compact solution for system amplification and distribution Both balanced and unbalanced line inputs make it selectable for installer balanced line output feeds to another power amplifier as well as secures the signal transmission is less noise and longer distance 70V 100V and 4ohm speaker outputs are convenient for installation when selection different spea...

Page 6: ...t the protection the device starts normal operation 4 PROT CH1 CH2 Equipment normal working hours lights out when the output connection overload more than 1 6 times the rated output power will disconnect the output protection device 5 CLIP CH1 CH2 Clip lit when max wattage output output signal distortion 6 SIGNAL CH1 CH2 Signal indicator When lit input signal is detected 7 POWER Power indicator 3 ...

Page 7: ... output music signal unbalanced output use of non equilibrium 6 35TRS jack 14 LINE CASCADE OUTPUT CORLEONE SOCKET XLR output signal of power amplifier 15 COOLING FANS 16 GROUND LIFTER Earth line ground or lift switch Enable the switch to GND position when one unit is used disable the switch LIFT when several units are used to avoid noise caused by several earth line grounded 8 9 10 15 16 7 13 14 1...

Page 8: ...70V 100V COM 4 SPEAKER CONNECTIONS 4 5 CONNECTIONS 2120A 41 70V 2120A 83 70V LINE 70V 100V COM 4 70V 100V COM 4 100V LINE 8 ...

Page 9: ...load output if the LED is not ligh ting please check the input circuit When you start the machine it will run into auto checking condition its protection LED yellow will shine 3 seconds If the protection time is too long please check the machine or contact with our distribution of your local place Do not open and close the machine frequently Reopen should be after 10 seconds Power supply should ma...

Page 10: ...C INPUTS MIC LINE INPUTS P T T 1 2 3 4 5 6 7 8 9 10 INSIDE AC DC FUSE 220VAC DC POWER 24V MAX 0 6A PUBLIC ADDRESS S YSTEM SERIAL NO 2 1 3 7 4 52 4 2 GND PRIORITY CHIME LED PWR MIC INPUT 1 3 5 6 7 1 3 6 CHIME REMOTE MODEL NO T 2S01 PRE AMPLIFIER 2 OUTPUTS 1 1 2 3 1 2 3 240V 50Hz 400W T6 3AL 250V GND LIFT INPUTS LINK XLR BAL 1 GND 2 HOT 3 COLD CH 2 LINK CH 1 LINK CH 2 INPUTS CH 1 INPUTS OUTPUTS 1 OU...

Page 11: ...8 BLOCK DIAGRAM EB PA 100V 70V 4 COM CH2 LINK CH2 INPUTS TO EB PA CH1 LINK CH1 INPUTS TO POWER Z 240V 50Hz PT 100V 70V 4 COM 11 ...

Page 12: ...ATIO T H D RADIATOR METHOD INDICATORS 4 70V 100V 775mV 0dB 50Hz 15KHz 3dB 90dB 1 Compulsive wind cooling Power Signal Protection and Overheat Power Overheat Overload and short circuit DIMENSION mm NET WEIGHT GROSS WEIGHT 484X358X88 POWER CONSUMPTION POWER REQUIREMENTS 240V 50Hz 2120A 2X120W 16 5Kg 14 3Kg 400W 12 ...

Page 13: ...AL CLIP PROT TEMP SIGNAL POWER 2120A 2 CHANNEL AMPLIFIER 1 2 3 1 2 3 240V 50Hz 400W T6 3AL 250V GND LIFT INPUTS LINK XLR BAL 1 GND 2 HOT 3 COLD CH 2 LINK CH 1 LINK CH 2 INPUTS CH 1 INPUTS OUTPUTS 1 OUTPUTS 2 70V 70V COM COM 4 4 100V 100V N17795 CH1 ON OFF CH 2 VOLUME 1 2 3 4 5 6 7 8 9 10 0 CH 1 VOLUME 1 2 3 4 5 6 7 8 9 10 0 CLIP PROT TEMP CH2 SIGNAL CLIP PROT TEMP SIGNAL POWER 2120A 2 CHANNEL AMPL...

Page 14: ...PUBLIC ADDRESS SYSTEM VersionV0 1 ...

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