Hey man im gonna have to drop doin the snail shell with you. My brother is very busy workin on his house and takin vacations and such so its gonna be a while until i can get him to settle down and study this stuff with me. I have no doubt I will be able to build this box in the future but for now ill have to wait.
ps...id be happy to design you an abc box for your subwoofer though if you like.
if youve seen the post with the 6.5 ich speakers i made youll see one in action its basically supposed to give you two tuned ports one for low bass and one for higher bass the intresting thing is this guys post turned out to 32 and 45 hz but the impedance droped lowest at 32.5 and 64.5 hz basically an octave apart and as you know lower impedance equals more power....i have a theory that a third chamber may be beneficial to lower the impedance again only where its high on his graph just create a tune port in the middle of the two he did like 25 36 48 giving you theoretical low impedances at 50 72 96 hz and smaller impedances across the impedances in between....what do you think look at the post and what he says about his tunes of 32 hz and 45 hz then read the stuff about the graph and see if you agree with me.......i bought two of those 6.5's hes using there by the way....it cost me 92 bucks and change shipped....heres the post
oh know i know how to build the abc but im far from a pro but i wanted you to study what i wrote with what the guy wrote and tell me what you would conclude ....were a team here.. two brains are better than one