TheEAR,
I'm a long time listener, first time caller, to your expertise. A few questions for you:
1) Although we don't know the size of Matt0013's basement yet, will a single version of any sub do that room justice if it is HUGE? The reason I ask is that I see SVS offering subwoofer packages that include two subwoofers. Why the possible need for two? Also, do the SVS CS-Ultra's hang on below 30Hz?
2) How does a novice know the difference between performing well at 30Hz or above, or falling off quickly below 30Hz? Especially if that person (me) has never had a sub before? I'm thinking about getting a pair of RF-7's, an RC-7, and two pair of RCR-5's for the ceiling. My initial thought was to get the RSW-15, but then I thought I would be upgrading by going to the Sunfire Signature. From your response, it sounds like that may not be the case. I'm now leaning towards the SVS...
My room is approximately 6000 cubic feet (if that matters).
Thanks much!