"plus 300W is still plenty of bass for me (and im a basshead)"
Sorry... sticking a feather up your butt does not make you a chicken.
Enjoy your 300 watts but take it easy on the self-proclaimed titles.
I have had a set since 95 and love them.
The panels WILL need to be replaced at some point if they have not in the past already. I would ask.
There are also updated woofers available should you ever need them.
If you do need...
Something is seriously wrong there and a signal booster is not going to fix it.
SW Pre/out to the Crown right?
Are you running the amp bridged or just using 1 channel?
What driver in your THT?
edit: DVC wired out of phase....???