Not to butt in here, but we do not claim that the ZCON is an SQ sub. In fact, we have said the opposite of that. The ZCON was designed with brutal output in mind, while sounded good. Just wanted to clear that up. Thanks. swear i have seen you say "not bad for an SQ sub" when people post results... but perhaps i was wrong. does sound great on music tho. right behind your head in a wall.. somthing i think most subs have a problem with. EDIt: i looked back where i thought i remember you saying that i could not find it.. im sorry for the misleading remarks i made, i dont want to me known as that guy.... so i re track my statement. but in no way was it negative to SSa or the Zcon sub,. That was me in reference to the Xcon.