thumpper

iTrader: (1)

size all depends on the sub...
for music a lower tunning freq for ex...30 to 35hz range
and for all out spl the enclosure is usually tunned to the
resonance freq of the veicle..the last SPL box I built
ended up being tunned at 47hz

Father Yuli

iTrader: (17)

in Dave's car those same subs were getting about 1.2 cubes each and he was doing almost 152.

it all depends on the box design really.