Craig,
Those Infinity's are nice. Go on ebay and look for any Phase Linear power Amps. Gobs of power. I have one 700B pushing my 15 and 12 in drivers. another 400 series pushing my horns and tweeters. Two more pushing 2 other subs.
I attached some photos.
Also Ian MaCarthur turned me on to the better CD units like the "Rega Planet" and "Cambridge Azur CD players". I also spin vinyl with a Micro Seiki DDX 1000.
Those are a great buy...Don't piss off your wife..I do it all the time. Not intentionally..But, Robin Trower is awesome cranked....Thank god she is cool.
Bigger Speakers are BETTER!!! Bigger pressure waves...
Read this Pelican thread also.. Allot of great input from the same guys here!
http://forums.pelicanparts.com/off-topic-discussions/468913-audiophiles-did-you-get-dupped-into-cd-craze.html
Bob