Toa DA-1250D Operating Instructions Manual
Dual power amplifier
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- Operating instructions manual (12 pages) ,
- Operating instructions manual (16 pages)
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DUAL POWER AMPLIFIER
Table of contents
oreword................................................................................................................................................................................2
Power Level adjustment...................................................................................................................................................8
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Troubleshooting................................................................................................................................................................10
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.
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OPERATING INSTRUCTIONS
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DA-1250D
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Summary of Contents for Toa DA-1250D
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Page 1: Table Of Contents
..............................5 Wiring and AC power supply ............................6 Thermal Dissipation ................................7 Power Level adjustment..............................8 Specifications ..................................9 Troubleshooting................................10 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. -
Page 2: Important Safety Instruction And Symbol Description
Important Safety Instruction and symbol description 1.Read these instructions. 2.Keep this operating instructions. 3.Pay attention to all the notice. 4.Comply with these instructions. 5.It is forbidden to spray liquid around the equipment. Please do not place liquid container above the product, such as vases, etc.The dry cloth and air pressure gun can be used for cleaning. -
Page 3: Foreword
Foreword Welcome Thank you for purchas our products. The DA-1250D dual power amplifier is designed for sound reinforcement, lectures and other applications. Please take the time to study this manual so that you can obtain the best possible service from your amplifier. -
Page 4: Front Panel Functions
Front panel functions Front Panel Mounting hole Suction Power switch Control panel Illuminates when either protection PROTECT circuit action. Illuminates when compressor / limiter is CLIP protecting the amplifier from input overload. Illuminates when output signal around -5dB -5dB than full power. Illuminates when output signal around -10dB -10dB than full power. -
Page 5: Rear Panel Functions
Rear panel functions Rear Panel Socket with fuse Signal Amp output connectior The speaker connector Signal connection Signal input INPUT It can work from 2-16ohm in stereo or parallel mode. It can Sensitivity selector switch work good from 4ohm to 16ohm In bridge mode INPUT Balanced male XLR... -
Page 6: System Connection Cases
System connection cases Speaker Signal source 5/10... -
Page 7: Wiring And Ac Power Supply
： Dissipation Model Cable size Power DA-1250D 1100W ≥1.5mm When you use 1 power supply socket for many amplifiers, the power cable of the outlet should be bigger and also the internal cable of socket. Please check the power voltage remark in the rear panel: 220V/240V = voltage range between AC200V to 240V. -
Page 8: Thermal Dissipation
Thermal Dissipation Stack installation To ensure the cooling environment, please meet the following condition In order to have a good heat dissipation condition for amplifier, please clean the filter after you finish your install, because the dust in filter will stop the air vent, it's not good for the heat dissipation. -
Page 9: Power Level Adjustment
Power Level adjustment Procedure Power On Source Sound console Peripheral devices Power Amplifier For high power system, the Power-on order is very important, Power off not in the order is likely to damage Power Level Adjustment the equipment. Therefore we suggest that you use the sequence Power amplifier should be in the condition of no load in the power device. -
Page 10: Specifications
Specifications Output power 8Ω stereo 700Wx2* 4Ω stereo 1250Wx2** 2500W** 8Ω bridge Other Specifications Frequency response 20Hz-20KHz(+/-3dB ) THD+N ≤0.15% S/N rate ≥100dB ≥500 Damping factor Slew rate ≥10V/μs Input sensitivity 0.775/1.0V/32dB Input impedance(bal/unbal) 20kΩ/10kΩ Voltage gain (8 ohm） 39.7dB Output circuitry Class D Cooling... -
Page 11: Troubleshooting
Troubleshooting After powered without any response The protection light blinks Measure the outlet with a multimeter to check if there is power When the PROTECT light works, the amplifier into the available and when no multimeter, you can have a test pencil. protection mode.
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