Powering amplifier with PSU

makhoder

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Hello everybody, I had an amplifier together with 2 speakers and subwoofer built into my car, I got rid of the old car so now I have this system left in my living room. I want to make use as a home theater system.
So the amplifier Boschmann XR888
I already have a PSU of a pc I had rated at 480W
It has 2 +12v Rails, one 15A and the other 16A
Anyway I can power the amplifier with this PSU?
 

bistwo

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Jul 27, 2011
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According to the manufacturers website, that amplifier has a peak output of 1200W, so your PSU probably won't be able to provide enough power.
 

makhoder

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The amplifier has peak power 1200W @ 2 ohms and 200W RMS x 2CH @4 ohms

Those are the specifications of the AMP
SPECIFICATIONS
* Power output: 1200W @ 2
* Bridged power output: 200W RMS x 2CH @ 4
* Rated Continuous power output: 95W RMS x 4CH (@ 2 Ohms)
* Rated Continuous power output: 60W RMS x 4CH (@ 4 Ohms)
* Frequency Response ( 1dB) :5Hz-50KHz
* High Pass filter frequency range:80Hz-1200Hz
* Low Pass Filter frequency range:50Hz-250Hz
* Bass Boost: 0dB/6dB/12dB
* S/N Ratio: >100dB
* Total Harmonic distortion: < 0.03% (1KHz)
* Input Sensitivity: 0.2V - 6V
* Input Impedance: 22k
* Damping factor: 130
* Line Level inputs & outputs
* Channel separation: >100dB
* Adjustable Electronic Sensitivity Range (Low/High) : 0.2V- 6V
* High capacity power transformers
* Fuse Rating: 40A
* Dimensions: 250mm X 248mm X 59.5mm
 

Mr5oh

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1200 watt @ 12 volts is 100 amps, even 200 watts at 12 volts is 16 amps, you'll burn things up if you try this.

There's a reason you need to run a large gauge cable to the amplifier and your power supply has 14-18 gauge wiring?
 

InvalidError

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May 18, 2007
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If you tied the two rails together to avoid tripping their individual over-current protection (not recommended) and the PSU can work properly without load on its 3.3V and 5V outputs, it will most likely work.

If you use only one of the 12V rails, you will most likely trip the over-current protection at less than 200W total peak output power.
 

gvizipue

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you use only one of the 12V rails, you will most likely trip the over-current protection at less than 200W total peak output power.
 

InvalidError

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Only if you actually want to get 1200W PMPO out of it.

If all you want is be able to use it as a surround amplifier at something like 20-30W per channel, then it should work fine.
 
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