Originally posted by Sleeper:
Turn all volumes up on the system, then slowly start turning down the master volume on the line driver untill all distortion is gone. Then just use HU control for adjusting volume from then on and all will be fine.
this step right here just brought the output voltage of the line driver down to the same level as the max input voltage of the amp. So, I agree wholeheartedly with this step. The line driver is no longer providing 10-12v,it is producing 5 (or 4 depending on the example being used) making it no more effective than the 5v (or 4v) output of the HU.
