I seem to be in minority here, but what's the point of paying extra for a powerful sub and then never crank it past 1/4 on the gain volume? Wouldn't it be more economical to get a not-so-big sub and turn the gain to, say 1/2?

Now if you say it's about the love of deep, can-feel-but-cannot-be-heard-bass and not about economic, I'll retreat.

If you have a neighbor downstairs, the EP500 is definitely too big.

M60 + QS8 + SVS PB10 + Yamaha HTR-5640 + Pioneer 578a