<< A question, though - did you just use a Y-splitter to hook up the subs, or does the amp has two outputs? >>
Two outputs
<< Also, were the subs already enclosed, or did you have to build your own? What are the interior dimensions of it (them)? Are they in separate enclosures? Ported, sealed? >>
Enclosed, probably 2.5' x 1.5' x 1', sealed
I have bass boost off, and bass turned to -4.. it's still insane 🙂