So what do you think is the simplest best way to use the multi-meter to evaluate the channel differences (be it voltage, resistance, etc), either at the amp, or at the sub. I'm happy to leave the sub out of it. After I noticed the right channel acting up, I simplified the total circuit and rotated speakers and cables and consistently the only thing that remained constant was the right channel no matter what was plugged into it, had problems. Audibly, it sounds dimmer, muddy and distorted and significantly lower volume than the left channel.\n\nVery best,\n\n\nSeems like you just switch topic. Are you now talking about troubleshooting your power amp that you think was damaged? I thought you just want to see if for yourself that the speaker level input of your BIC sub can be connected to the same amp's binding posts in parallel with your front left\/right speakers.\n\nAgain, trying to find out what's wrong with your amp is a different story. One would need to know the symptoms, what it is doing and\/or not doing, and really should have a copy of the service manual on hand and you have some electrical\/electronic knowledge not just a multi meter. Otherwise there isn't much you can do other than checking all connections (if it still makes sound) points, fuses (if not making sound) etc. If not, the best bet is to send it back to the manufacturer for repair especially if it is under warranty.