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 SAFETY PRECAUTIONS

4

An all-pole mains switch with a contact separation of at least 3 mm in each pole shall be incorporated in
the electrical installation of the building.

When Installing the Unit

     Never   plug  in   nor remove the power  supply   plug
    with  wet  hands,  as  doing  so  may cause electric
    shock.

     When unplugging   the  power   supply cord, be sure
     to grasp the   power  supply   plug; never  pull on the
    cord  itself.  Operating   the  unit   with  a  damaged
    power  supply  cord  may  cause  a  fire  or  electric 
    shock.

     When moving the unit, be sure  to remove its power 
     supply cord   from the  wall   outlet.  Moving   the unit
     with the   power  cord   connected  to   the outlet may
     cause damage to the power cord,  resulting in fire or 
     electric shock. When   removing the power cord,  be
     sure to hold its plug to  pull.

  Do not block the ventilation slots in the unit's cover.
  Doing so may cause heat to build up inside the unit 
  and result in fire.

  Avoid installing the unit in humid or dusty locations,
  in locations exposed to the direct sunlight, near the 
  heaters, or in locations generating   sooty smoke or
  steam  as  doing  otherwise  may  result  in  fire  or 
  electric shock.

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  hearing.

     Do not operate   the  unit   for an  extended   period of 
     time with   the sound distorting. This  is   an indication
     of   a  malfunction,   which  in   turn  can cause heat to
     generate and result in a fire.

     Contact your 

 dealer as  to the   cleaning. 

     If   dust is allowed  to accumulate   in  the   unit  over a
     long period of   time, a  fire   or  damage   to  the   unit  
    may result.

sound choice

  If dust accumulates on the power supply  plug or in
  the  wall  AC  outlet,  a  fire  may  result.  Clean  it 
  periodically. In addition, insert the plug in the wall 
  outlet securely.

  Switch off   the  power, and unplug the power   supply
  plug   from the  AC outlet   for  safety   purposes when 
  cleaning   or  leaving the unit unused for   10  days or 
  more. Doing otherwise   may cause a fire  or   electric 
  shock.

Due to product upgrades, while some of the features and specification in the user manual does not 
match the actual functions, sorry for any inconvenience and  thanks for your kind understanding!

Summary of Contents for 4120A

Page 1: ...optimum resultsfrom this unit We also recommend that you keep this manual handyfor future reference 4 CHANNEL AMPLIFIER 4120A POWER TEMP ON OFF 5 0 1 2 3 4 6 7 8 9 10 CH 1 5 0 1 2 3 4 6 7 8 9 10 CH 2 5 0 1 2 3 4 6 7 8 9 10 CH 3 5 0 1 2 3 4 6 7 8 9 10 CH 4 PROTECT SIGNAL CLIP 4120A 4 CHANNEL AMPLIFIER ...

Page 2: ...2 GENERAL DESCRIPTION 5 3 FEATURES 5 4 NOMENCLATURE AND FUNCTIONS 4 1 Front Panel 6 4 2 Rear Panel 7 5 CONNECTIONS 5 1 Speaker Connections 5 2 Input Connections 6 APPLICATIONS 7 BLOCK DIAGRAM 10 8 SPECIFICATIONS 11 9 DIMENSIONAL DIAGRAM 12 8 8 9 ...

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: ... 120W 100V 70V line transformer isolated speaker outputs low impedance 4 ohms speaker outputs Four independent amps in a singale chassis Four line level inputs Commercial grade torroidal transformers produce high performance audio on a wide range off frequencies Intelligent limiter can reduce excess signal Reliable protection against overload short circuit and power fluctuation for optimum reliabi...

Page 6: ...t to protection the amplifier from damage This indicator will be extinguished when amplifier is under normal working conditions 6 POWER Power indicator LED 7 TEMP The protection indicator will be light on when the inside temperature is over 90 the output will be cut to protect the amplifier from damage It will resume to work after cooling down 4 NOMENCLATURE AND FUNCTIONS 4 1 FRONT PANEL 1 2 5 4 3...

Page 7: ...ork properly you must wrap the hole can not have any object covered to avoid overheating protection 4 2 REAR PANEL 7 8 9 10 11 1 2 3 1 2 3 1 2 3 1 2 3 CH 1 OUT CH 2 OUT CH 3 OUT CH 4 OUT CH 1 IN CH 2 IN CH 3 IN CH 4 IN COM 100V 4 70V COM 100V 4 70V COM 100V 4 70V COM 100V 4 70V RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR AVIS RISK OF ELECTRIC SHOCK DO NOT OPEN XLR BAL INPUT 1 GND 2 HOT 3 COLD 240V 50H...

Page 8: ...5 CONNECTIONS 100V LINE 70V 100V 70V LINE 5 1 SPEAKER CONNECTIONS 4 COM 4 70V 4 8 70V 100V COM 4 70V 100V COM 4 5 2 XLR CONNECTIONS 4120A 41 4120A 83 ...

Page 9: ...R L L CD Player AUDIO OUT R R L L CD Player AUDIO OUT R R L L CD Player CH1 IN Ch2 IN Ch3 IN Ch4 IN Multi channel Mixer Pre amplifier 4 Channel power Amplifier 1 2 3 1 2 3 1 2 3 1 2 3 CH 1 OUT CH 2 OUT CH 3 OUT CH 4 OUT CH 1 IN CH 2 IN CH 3 IN CH 4 IN COM 100V 4 70V COM 100V 4 70V COM 100V 4 70V COM 100V 4 70V RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR AVIS RISK OF ELECTRIC SHOCK DO NOT OPEN XLR BAL ...

Page 10: ...S TO TO EB EB PA PA 100V 70V 4 COM CH1 LINK CH1 LINK CH1 INPUTS CH1 INPUTS TO TO POWER POWER Z Z 240V 50Hz PT EB EB PA PA CH1 LINK CH1 LINK CH1 INPUTS CH1 INPUTS TO TO EB EB PA PA CH2 LINK CH2 LINK CH2 INPUTS CH2 INPUTS TO TO 100V 70V 4 COM 100V 70V 4 COM 100V 70V 4 COM ...

Page 11: ...D COOL METHOD INDICATORS 4 16 70V 100V 775mV 0dB 50Hz 16KHz d istortion 1 5dB 15V microsecond 1 Copulsive wind cool form Power Signal Protection Peaking Power on Overload and Protection POWER REQUIREMENTS 240V 50Hz 4120A 4X120W DIMENSION mm NET WEIGHT 484X448X88 POWER CONSUMPTION 22Kg 720W OUTPUTS NOISE 3mV IMPEDANCE 200 1 ...

Page 12: ...ER 1 2 3 1 2 3 1 2 3 1 2 3 CH 1 OUT CH 2 OUT CH 3 OUT CH 4 OUT CH 1 IN CH 2 IN CH 3 IN CH 4 IN COM 100V 4 70V COM 100V 4 70V COM 100V 4 70V COM 100V 4 70V RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR AVIS RISK OF ELECTRIC SHOCK DO NOT OPEN XLR BAL INPUT 1 GND 2 HOT 3 COLD 240V 50Hz 720W T8AL 250V N17795 POWER TEMP ON OFF 5 0 1 2 3 4 6 7 8 9 10 CH 1 5 0 1 2 3 4 6 7 8 9 10 CH 2 5 0 1 2 3 4 6 7 8 9 10 CH ...

Page 13: ...PUBLIC ADDRESS SYSTEM VersionV0 1 ...

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