well my bass is hugeee...i have the 12inch Type S 900 watt max...but i dont have my trunk or doors soundproofed..(whats that stuff called? dynomat?) it sounds pretty good right now (little rattling somewhere)...and i only have the amp (gain) running...I think at a 1/4 power or even less with the sub on the lowest setting and it still pounds like hell...lower volume its real clean sounding..
