I figured there would be some bumps along the way, so i wasn't that surprised when they happened. There are thousands of products out there all with their own/different application, so to expect them all to perfectly match up is not reasonable, although i do agree about the fans, just put a quiet one in to begin with. This has been a fun project so far and don't think im done with it yet(eq). With guys like Brian, Austin, Andy and others on here, one can find the info needed pretty quick, so you don't need to go through thousands of post to find what you need, thanks guys! Yes, i wish had gotten into this sooner, I'll never buy another commercial sub again, i could even see having 8,12,16 someday, but first let's get these four as perfect as possible.