Was it a used head unit? Maybe it's the culprit.
RF still makes Fanatic Q's. I have no idea if they're the same as years back, but the CDT's I linked to (the off-color ones for $150) are commonly thought as the best value currently out there in a [pre-built] component system.
A US Acoustics USX-2100 from
www.thezeb.com for $100 would be a great amp to push the CDT's.
