Can someone help with this please. I am thinking about connecting 2 subwoofers from my pre outs on the back of the amp instead of just the one. However what I want to know is when I play a Blu ray through my Oppo which is connected via the multi channel inputs (dvda) on the AV8, will it pick up the second sub even though I only have 6 analog cables from the Oppo to the amp. I understand that connecting it up this way the amp only acts like a volume switch, so will my amp send the info to the second sub?