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OPERATING INSTRUCTIONS

DUAL POWER AMPLIFIER

DA-1250D

1.

IMPORTANT SAFETY  INSTRUCTIONS  

 ........................................................................................ 2

2.

SAFETY PRECAUTIONS  

 ................................................................................................................ 2

3. GENERAL DESCRIPTION  

.                        ............................................................................................................. 5

 

4. NOMENCLATURE AND FUNCTIONS    

              ............................................................................................ 5

 

5. CONNECTIONS  

 .............................................................................................................................. 7

6.

SYSTEM CONNECTION CASES 

 .................................................................................................... 8

 

 

7. THERMAL DISSIPATION  

 ............................................................................................................... 9

 

8. POWER LEVEL ADJUSTMENT   

......................................................................................................10

 

  9. TROUBLESHOOTING

    ....................................................................................................................11

 

10. SPECIFICATIONS 

  ...........................................................................................................................12

 

11. DIMENSIONAL DIAGRAM

 

..............................................................................................................12

 

12. ARABIC IMPORTANT SAFETY INSTRUCTIONS

 

..........................................................................13

 

TABLE OF CONTENTS

Thank you for purchasing TOA's Dual Power Amplifier. 

Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.

Summary of Contents for DA-1250D

Page 1: ...IONS 7 6 SYSTEM CONNECTION CASES 8 7 THERMAL DISSIPATION 9 8 POWER LEVEL ADJUSTMENT 10 9 TROUBLESHOOTING 11 10 SPECIFICATIONS 12 11 DIMENSIONAL DIAGRAM 12 12 ARABIC IMPORTANT SAFETY INSTRUCTIONS 13 TA...

Page 2: ...periods of time Refer all servicing to qualified service personnel Servicing is damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the...

Page 3: ...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...

Page 4: ...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 resu...

Page 5: ...olumes CH2 knob lose efficacy 3 LED indicator PROTECT Lights red when either protection circuit action CLIP Lights red when compressor limiter is protecting the amplifier from input overload 5dB Light...

Page 6: ...to speakers Refer to p 7 and p 8 9 Signal input 20k balanced 10k unbalanced XLR F connector Connects to Signal source 6 10 Sensitivity selector switch Selects the input Refer to p 8 11 Mode selector s...

Page 7: ...failure NOTES T It can work good from 8 to 16 in bridge mode he speaker connector can work from 4 16 in srereo or parallel model Inputs Outputs BLACK RED 20mm 8mm 0 8 0 3 7 Speakon NL4 Negative black...

Page 8: ...ridge mode Parallel mode Stereo mode CH 1 CH 2 CH 1 CH 2 INPUT MODE OUTPUT CH 1 CH 2 CH 1 CH 2 INPUT MODE OUTPUT CH 1 CH 2 SPEAKER 1 SPEAKER 1 SPEAKER 2 CH 1 CH 2 1 2 INPUT MODE OUTPUT BRIDGE PARALLEL...

Page 9: ...r The first time cleaning of strainer mesh should be right after installation Recommend to clean the strainer mesh quarerly Pease do not run the product without the dust filter or it makes the service...

Page 10: ...should operated by professional person if you don t know how to do please be careful Mixer Processor Input the stable pink noise Put the line output to 0dB LEVEL 40 20 12 6 3 0 3 6 12 CLIP CH 0 12 MAI...

Page 11: ...works then you need reduce the output Both loudspeaker and amplifier have limit you should use them in their limit if The protection light blinks When the PROTECT light works the amplifier into the p...

Page 12: ...1 2 XLR M connector SPEAKER 1 2 2 channels 700Wx2 8 1250Wx2 4 1 channels BRIDGE 2500Wx1 8 NL4 SPEAKON connector Frequency Response 20Hz 20kHz 3dB Total Harmonic Distortion 0 15 S N Rate 100dB LED Indi...

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