I know this is going to sound bad but we tried an ameican bass dx 10 in a sealed box and it was not bad but then we ported it and in a 1.5 cubic foot box stuffed to make it react like it was in a 2 cubic foot box and gained 10 db haha. And that was with two 2 inch ports and massive turbulance at 300 rms tuned to like 45 hz
usermom199599 title.... american bass dx 10 single 10 dx 135.7 db (that would be a 135.2 on our termlab) 300 rms restricted port