384" of slot port ..or 2 12" aeros.or maybe even 4 8" aeros12 12's in a 24 cubic ft box tuning to 31hz, been to the 12v and a few other sites and it keeps saying like a 12" round port 4.4 inches. But isnt that going to be choking the hell out of the box. And whistling
From my calculations with a woofer of around 15-20mm xmax I get 340 square inches.. But when your going that size 340-380 same thing!!384" of slot port ..or 2 12" aeros.or maybe even 4 8" aeros