Rail voltage Adjusting


Gold Member
Username: Van_man

Boston South, MA

Post Number: 2127
Registered: Mar-06
Any one ever set (mod) rail voltage? Any info would be good. This is what I have so far. This info is to set to factory spec. But increasing rail voltage will increase output.. Correct? So what is the dangers of this procedure?

Turn the bias controls fully counterclockwise. No input & no speakers attached. You need a current meter connected between the main power input lead and the amp, apply power and turn unit on. Take a reading from the current meter - should be around an amp of current. Adjust the left bias control slowly, watch the current meter, add 100ma or .1Amp to the original reading. The adjust the right channel bias control, add another 100ma or .1Amp to the reading after adjusting left channel. That should be it.

There is a more accurate way of doing this, but it involves speaker loads, oscilloscope, signal generator, heatup times, gets involved.
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