The bass response is nothing short of SICKENING, honestly. I know we're making the amps out to be unbelievable, but they truly are.
I worked at Circuit City for 5 years, 3 in home audio and 2 in car audio/installation while in college. I know a thing or 2 and one thing I remember hearing time and time again is your ears really can't distinguish anything under 1.0% THD, and when you're talking bass your ears can't distinguish distortion under 10.0%.
I first hooked the Crown up to a set of Polk LSi15s and compared to running them off my HK receiver it was night and day, especially in the bass department. The mids are more apparent and the highs seem less harsh, like they're not being "forced", if you will. I am now testing the Crown on a set of Polk LSi7s (150w RMS at 4ohms) and they're loving every watt I can push at them. Currently listening to Norah Jones (I hate this kind of music, but it just sounds SO damn good heh).
I'm using 1 meter Monster Cable Reference RCAs ($100) that I got cheap from working at CC and am using the same XLR to RCA adapters Brickie is using from Sweetwater and the connection seems to be good.
As far as the fan noise goes if you could tuck them away in a closet or 2nd room that would be optimal. While watching a movie or listening to music at 80+ db I can't hear the fans at all from 15ft away. When I get my 5.1 installed and get 2 more I bet I *might* be able to hear them then, so I'm working on running the wires into our utility closet. Hope my fiancee doesn't mind