rofl @ 75% gain with 4v outs...just wow. As for your xover included with your components, 99% if not all do NOT have any included HPF to keep the mids from bottoming. Theres one to keep the tweets happy and a LPF to keep the mids under control of the tweet.
SQ guy running off deck power makes me a sad panda.
Edit: SQ guy running 15s with gain at 75% is teh lol. WE LIKE DISTORTION, IT MAKES OUR WOOFERS SOUND GOODER.