i'm using this 10" sub with hi1983 sealed box... nice... :D
just now listen to chinese song, janice the 'big brother'...
my friend asked, why this woofer box no 'hole' and 1 piece 10" only, when sit in the car the bass so nice one? :P
he said one piece one piece doom doom sound solid, enough pressure but no unnecessary vibrate... hehe...
i told him, its just an entry lvl jbl sub... and hi1983 said warranty one to one change if spoil naturally... :P