Well actually, I've been lookin' at that MB Quart 4250....That'll be all I need then...How do I Bi Amp it though? What exactly does that mean? Does it mean the tweets and the woofers themselves are going to be recieving 250 watts rms? Can the Tweets handle that amount of power? Does it make it sound better or is it going to be very harsh? Because I'm going for as much SQ as possible!
What you will gain by biamping is the flexibility of tuning each part of the component (the tweet and mid) whereas you would not if you just ran the power to the passive x-over itself. You would not send 500 watts total to each side, you would send 250x2 which is essentially the same as 250x1 but with less control.
IMO, you might as well get a really nice 2 channel that will put out a ton of clean power to those Z's and call it a day. Remember they are 3 ohms, so any amp that does 250x2 @ 4 ohms would really equate to 333x2 @ 3 ohms....and those speakers would love it!!!
You could run the rears off the HU power if you have it to get some "rear fill." Been there, done that....it's more like rear waste IMO....unless of course you care about rear passengers or you listen to your music from your back seat
I've been the same position as you. At the end of the day, I chose to keep the passive x-overs for my fronts, add a midrange set, ditch the rear spearkers all together, and get a nice sub to tie it all together. I could see the need to biamp for competition or something, but it's kind of an un-needed process IMO. The Boston engineers put some time and energy into their passive x-over network - so much so that they keep it a big secret.....and at $1000 a set, you might as well utilize it.
The tweets are probably 6 ohms and I swear there's a guy on ECA running 250 watts to his active tweets of the Qaa4250:crazy: