Sorry to bump an old thread, but I figured this thread has the most information so far, so no point in starting a new one.
I'm not too happy with my bass during movies. It sounds great with music, but it seems it doesn't rumble like I would think it should.
I've also heard this port noise, I can't seem to pin it down though, at first I thought it was something vibrating on my wall, then I thought it was the grill of the subwoofer, but now after reading this I'm almost sure that it is port noise. What can I do about it?? My crossover on my subwoofer is at 120hz, and I'm not for sure what it is on my receiver, but I will check to see it's set at 80hz. It's set on Flat, but I seem to like Punch and Depth settings as well. The gain is set to 0 on the subwoofer, and 0 on my receiver. When I optimized my receiver it turned it down to -6, but I enjoy bass so I turned it back up to 0.
I guess it's all a matter of playing with it and getting it to sound the way I want it to, but that port noise is really annoying at times, and it doesn't seem like I'm over-driving it at the time since there's not much bass coming out whenever I hear it.
Let me know, this is driving me crazy!!