Since I'm having such a hard time finding another TC-3000 15" with the logoless silver titanium cone to match the one I already have I've decided to just say screw it and run 4 mb quart rwe-304 12's in 1c/ft - 1.15c/ft sealed boxes. Would it be possible to hit 140dbs or does anyone have any numbers running these mb quart subs? These will all be running off an Orion 2500D and the electrical should be good with it.