I recently got two older SVS drivers and wanted to try something quick to see what happens. I had a 2ft^3 speaker box that I used it to build a sealed sub with one of the drivers.The whole thing took me about 1 hr to finish. I set all my speakers (Diva 6.1, 2.1, C3) to small and calibrated everything by using th RS SPL meter. Then I played some music and some parts of TPM including the exploding sphere. It suffices to say that I am not impressed. The bass that I get from Divas (when set to large) is so much cleaner and tighter. I should also mention that my room is 17'x33'x7.5'. I guess the moral of the story is that, this is not so easy.