Silver Member
Username: Killer44

Ontario Canada

Post Number: 206
Registered: Dec-04
im building a ported box for a ALUM12Q, and the audiobahn site says 2.5 for air space and 4x7.75 now would i jsut build a box w/ 2.5 cu ft. jsut like a sealed enclosure and then cut out a port to the remcomended size(also should it be a slot port or circle(pvc) ) thanx in advance...

Silver Member
Username: Yamahabanshee1

Paulding, Ohio USA

Post Number: 196
Registered: Jul-04
well on audiobahns site it should say what cuft to make the ported box cuz the sealed box is smaller so it will need to probally be around 3cuft
I like circle ports personally! use this site it will help! www.bcae1.com/spboxnew2.htm
that has all the caculations and all that good stuff

Silver Member
Username: Killer44

Ontario Canada

Post Number: 207
Registered: Dec-04
thanx but i didnt need to know the size i got all that aready, i jsut need to know if that how i would go buy building the ported enclosure(see 1st post) thanx....and aobut the slot port or circle(if that whataudiobahn means by 4x7.75)

Bronze Member
Username: Nocc1n

Louisa, VA US

Post Number: 50
Registered: May-05
use audiobahns ported specs like it has on their site for the sub. You can buy some thing for the port online.
Yeah when it says 4x7.75 It means a port 4 inches in diameter and 7.75 inches deep.
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