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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  

  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.

ITC

ITC 

 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.

1

1. SAFETY PRECAUTIONS

T-20AP

Summary of Contents for T-20AP

Page 1: ...ference MIXER AMPLIFIER T 20AP OPERATION MANUAL AUDIO AUDIO PUBLIC ADDRESS SYSTEM ON OFF MIC1 INPUT BASS 5 0 1 2 3 4 1 2 3 4 5 TREBLE 5 0 1 2 3 4 1 2 3 4 5 0 1 2 3 4 5 6 7 8 9 10 MIC2 TEL 0 1 2 3 4 5 6 7 8 9 10 OUTPUT LEVEL 2 4 6 8 10 PROT POWER 0 1 2 3 4 5 6 7 8 9 10 MIC1 AUX 0 1 2 3 4 5 6 7 8 9 10 T 20AP MIXER AMPLIFIER 5 0 1 2 3 4 6 7 8 9 10 MASTER ...

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

Page 3: ...n 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 ...

Page 4: ...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 ...

Page 5: ...channel MIC1 balanced unbalanced input 2 5 5mv 1 2Kohms 3 1 channel TEL input sensitivity 1V 2Kohms 4 built in treble bass adjusting bass 10dB at 100Hz treble 10dB at 10KHz 5 built in priority functions TEL priority Tel override Aux and MIC 1 2 MIC1 is second priority override AUX signal except tel signal ...

Page 6: ...AUX AUX volume control 3 NOMENCLATURE AND FUNCTIONS T 20AP 7 6 TEL TEL volume control MIC1 MIC2 MIC volume control MIC1 MIC2 8 MIC1 INPUT MIC1 input 6 3 Microphone jack input 9 LEVEL INDICATORS Level meters 6 output level indicators 10 PROT Protection indicator 1 2 3 4 5 6 7 8 9 10 T 20AP MIXER AMPLIFIER POWER ON OFF OUTPUT LEVER MIC1 INPUT BASS MIC1 AUX TEL TREBLE 1 2 3 4 5 6 7 8 9 10 0 4 3 2 1 0...

Page 7: ...AL 48V PHANTOM 220V 240V 50 60Hz T1AL 250V 11 Mute adjustor Adjust the mute degree from 0 20dB when MIC1 input override all the other inputs 12 MIC input with phantom power MIC1 input compatible of XLR and 6 3 MIC 13 MIC 2 input MIC2 input of 6 3 MIC AUX input AUX for extra equipments input Line output onnect to other audio processing equipments 16 TEL INPUT 17 14 15 C SPEAKER TERMINALS Connectors...

Page 8: ...6 70V 100V COM 4 16 70V 100V COM 4 16 100V LINE 70V 100V COM 4 16 T 20AP 245 70V LINE 4 1 SPEAKER CONNECTIONS 4 2 XLR CONNECTIONS 4 16 4 CONNECTIONS T 20AP 70V T 20AP 500 ...

Page 9: ... four output connectors only can choose two connectors work together If voltage is 70V 100V the speakers must be with transformer and make sure the total power wattage of speaker is 15 less than the power wattage of amplifier GUIDANCE OF EXCLUDING ERRORS No voice output in normal condition All the wires are connected well but no voice output Cause 1 No power or wrong plug connection 2 Fuse is burn...

Page 10: ...M 220V 240V 50 60Hz T1AL 250V TEL INPUT MIC 2 AUDIO OUT R L COM ADRESS TAG RISK OF ELECTRIC SHOCK DO NOT OPEN RISQUE DE CHOC ELECTRICUS NE PAS QUVRIR AVIS PUBLIC ADDRESS SYSTEM SERIAL NO AUDIO SOURCES LINK INPUTS RISK OF ELECTRIC SHOCK DO NOT OPEN RISQUE DE CHOC ELECTRICUS NE PAS QUVRIR AVIS PUBLIC ADDRESS SYSTEM SERIAL NO XLR BAL 1 GND 2 HOT 3 COLD 1 2 3 1 2 3 OUTPUTS INPUTS POWER AMPLIFIER SPEAK...

Page 11: ...9 7 BLOCK DIAGRAM T 20AP COMP COMP GAIN AMP GAIN AMP GAIN AMP POWER AMP GAIN AMP ...

Page 12: ...n MIC in 1Khz preamp out Input sensitivity impedance AUX input section AUX in 1Khz preamp out Input sensitivity impedance T 20AP 4 16 70V 100V 20W 1V 20Kohms 80Hz 16KHz 1dB 3dB 5mV 500ohms unbalance 2 5mV 500ohms balance 300mV 500ohms TEL input section AUX in 1Khz preamp out Input sensitivity impedance 1V 500ohms Power source Power consumption Net weight Dimensions mm 220V 240V 50 60Hz 30W 4 3Kg 2...

Page 13: ... MIC2 PROT 2 4 6 8 10 SERIAL NO PUBLIC ADDRESS SYSTEM RISQUE DE CHOC ELECTRICUS NE PAS QUVRIR AVIS RISK OF ELECTRIC SHOCK DO NOT OPEN TEL INPUT G COM 4 16 70V 100V OUTPUT LINE OUT AUX MIC 2 MIC 1 INTERRUPT TIME ADJ MIC 1 XLR 6 30 INPUT BAL UNBAL 48V PHANTOM 220V 240V 50 60Hz T1AL 250V T 20AP MIXER AMPLIFIER POWER ON OFF OUTPUT LEVER MIC1 INPUT BASS MIC1 AUX TEL TREBLE 1 2 3 4 5 6 7 8 9 10 0 4 3 2 ...

Page 14: ...2010 08 Version0 1 PROFESSIONAL PUBLIC ADDRESS SYSTEM AUDIO AUDIO Guangzhou ITC Electronic Technology Limited Http www itc pa com cn ...

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