Port question

[Z3n]

Hey I was wondering about how to determine port size for two 12" subs sharing a single port. Each sub would have its own air space, about 2.00 cubic feet. If I have one port in the middle of the two subs what do I do for calculating the port length and dimensions? Would I use a calculator like this one (http://www.the12volt.com/caraudio/boxcalcs.asp#porsq) at the12volt and put in 4.00 cubic feet for volume or what?

Thanks for any help!


Oh, and one other thing. :P I have a limited amount of space so how bad would it be if I went down to about 1.75 cubic feet per sub?

[Buck]

It depends on the woofers. We need to know how much power, what woofers, and what sound you are looking for.

[Z3n]

Okay. I've got a 1000w RMS amp, but each sub is 400w RMS. They're MTX JackHammer JH55's (12") subs, I'll have 2. No hate on the subs. :P I'm looking to tune to 35 Hz but I don't have a ton of room (2000 Toyota Celica GTS).

[Z3n]

Anything? :P