meh. like i said, itll be safe to assume its somewhere between 41-48L / 1.4-1.7cuft.

its an entry-level sub with a prefabricated sealed enclosure.. you're not gonna hear much difference whether its a 41 or 48L box. just chuck it in your car & enjoy it.

if you still wanna be anal then unscrew the sub, get out a ruler & take more measurements. not that hard.