philgoodscustom 10+ year member
Junior Member
Ok I have 8 alpine type r 12s . I wanted to build a box for it probably ported and I had a couple of questions. When it comes to the box does it need to be individually chambered or can all 8 subs share the same chamber. Also if they do share the same chamber is the internal volume what's considered for airspace for each subwoofer or do u calculate the total internal volume of the box and divide it by all 8 subwoofers to see how much cubic feet each sub is using. The reason why I ask is because the alpine specs ask for about 2 cf per sub. And if I put all the subs in one chamber it would be more them 2 cubic feet.I hope I'm explaining it correctly lol