i just bought a polk-audio psw303 subwoofer for my home stereo. they recommended hooking it up from my amplifier via speaker cable, 16 gauge. but since i have a spool of high quality 12 gauge speaker cable lying around i hooked it up using that. just how much of a difference can i expect, if any, if i used 16 gauge instead? is this the sort of thing only a real audiophile would be able to discern? thanks!