I just hooked up my M&K K7 left, center and right speakers and my SVS 25-31PCi sub to my Pioneer Elite VSX-45tx. This is all new equipment I have acquired inthe past few weeks. After hooking everything up, the M&K speakers sound great. I haven't done any calibration yet. One reason for me to get the 45tx was for auto-MCACC. It was 11:30pm, so I thought it was a bit late to play test tones in my house, so I'm going to do that tommorow. But I did notice that there was barely any sound at all coming from teh sub when I played a few DVDs (titanic, Phantom menace). I have done the following: -subcable connecting the SVS to the proper connector on my receiver. The subcable is plugged into the LEFT input on the SVS. -receiver is set to "YES" for the subwoofer channel -I have the surrounds speakers turned off in the receiver since those aren't installed yet (waiting for installer to come in 3 weeks after the holidays). -sub Gain is set to about 1/3 Just wondering if I have to do anything else, or just run the auto-MCACC? I would've expected more bass right out of the box without any calibration with teh gain set at 1/3.