I do think it’s strange, though, that you’re using an SB2000 in a "fairly high-end" system. You need to increase your sub budget, there’s much better performance available for (in Rythmik’s case, at least) not much more money.
@shooter41 No, my feelings not hurt in the least. I transported my SB2000 from my HT in my family room just to see what it might add to my 2-channel system that consists of a Musician Pegasus R2R DAC, Bryston BP6 pre, McCormack DNA-0.5 RevA amp, and Soliloquy 6.2 speakers. The bass foundation was obvious, but the expansion of the soundstage in all directions along with improved imaging even with the one sub properly dialed in was pretty amazing and adding another I’d have to assume would improve things further still. I’ll take two SVS SB1000 Pros for significantly less $$$ over one comparable Rythmic or REL any day as I think two “lesser” yet still very capable subs trump one “better” sub, but you’re certainly entitled to your opinion.