I toohav ekappa 5x7's and while I can personally attest to their durability (I've been pushing just shy of 200w to them for a couple months now) I cannot say taht I really like their sound. They were intended to be a cheap means of buying time whiel I made a better decision, and the horrible part is now that i know better I hate hearing them mroe and more... Mindyou my stereo blows away all of my friends and whatnot, but personally to me, ick at the moment That's what I get for going and listening and hearing all sortsa better speakers.... As far as the outboard crossovers go, I'm not 100% positive, but I'm fairly certain that the "crossovers" supplied are simply a larger more-power-capable "cap" for tweeter protection. and do nothing to frequencies played by the midrange part.