Anybody know anything about subwoofers?

I also thought of that.....but if he used what I think he did (rca to ipod adapter...."same prong that a set of headphones would have")

and he connected it to the same rca ports that he was using when he had the headunit running to the amp.....then there should be no difference ....the amp would output the same either or.

is the headunit new or used? have you had a system hooked up to it before? I ask because its POSSIBLE that the rca outputs could be defective.... but you of course need to double check and make sure the rca connections fit well and our in the correct spot.

did you try running your ipod adapter directly to the input rca's on your amp? or did you plug them into your rca cables that you are using from the deck to the amp? .....reason I ask is that by using the cables to plug your adapter into it would rule out rather your cables are defective or not. ( I have seen the prongs inside the ends of the rca cables loose and seen the wires on the backsides of the terminals snapped off and I have seen cuts or breaks in the wires.....just a thought).