changing my install, recs?

I wouldn't try wiring your mids and tweets to seperate channels..yet.

JL's new woofer is the W1v2 which is supposed to replace the W0 line of subs. I have listened to the 12s and they are great subs for the money. One 12 would work well bridged to the rear channels of the 300/4. The 12" W1v2's suggested box size is 1.25 cubic sealed.

If you want to go to the next level a single JL W3v2 12" would be nice. The Infinity kappa and Alpine Type R subs are nice also.

check it out... http://www.jlaudio.com/press/W1v205.html

The Cerwin vega subs are good subs also but they would work better on a more powerful amp. You can find really good prices on them at   www.thezeb.com

Wow, I didn't realize that JL was bringing the W1 back, the specs look better than the old W1's. I would also agree with the Infinity's. As I have stated in the past, they are actually very impressive sub's.

Also, if you are budget minded, look into the MTX MXA 10's or the MTX 5500's. Great bang for the buck.

Chris