Also remember that a crossover is not a brick wall. If your crossover is 80 hz, there will still be information sent to the speaker below that frequency. I've heard a "rule of thumb" that you want your speakers to be able to go 1/2 to 1 octave below your crossover point.
That's an awesome price for a great center channel. It's not timber matched to the rest of your speakers however. I might be tempted to pick it up anyways and scout out some deals on some matching Reference speakers for a future upgrade of your front soundstage.
Yeah, that kit looks pretty neat. If I'd have known about that site when I built my system, I'm sure I would have shopped there instead of fabricating everything from scratch.
I use 3 of THESE to exhaust hot air out of my equipment area. I've also changed out the 4 fans in my QSC's with Panasonic units. With all 7 fans running, it's still virtually silent. All you hear is the faintest sound of air moving but only if the volume is completely off.
I just looked up the specs on the fan you are thinking about ordering. 47.5 dBa. I think that it may be a little loud for your application. I'd be looking at fans rated 15 dBa or less.
I didn't see a dB reading on that fan. You want to make sure the fan you're using isn't too loud otherwise it will be a distraction. I mounted 2 extremely quiet 12v fans on the back of my entertainment center. I ran a 12v trigger to a switched outlet of my surge protector and plugged in a 12v converter to run the fans with. It keeps things nice and cool. I've got 4 pro amps and an Anthem D2 making heat in a very small area and never have heat build up. This is a pic with my old Crown amps. You can barely see the top of one of the fans on the left side over the D2. I also put a fan on top of the D2 (black box on the right) to help pull heat off of it. Click on the pic to make it larger.
If your receiver comes with a mic and calibration software then all you do is follow the manual. If not, buy a disc like AVIA and an SPL meter from Radio Shack. The disc will walk you through the calibration process.