Type-x port size/box type

[Alpine4x4 10+ year member]

Ok so i plan on getting an alpine typ-x 12" subwoofer. Its recomended for a 2 ft3 box wich i can fit in my rig. I can only go depth wise 11" though. I downloaded winISD and have been playing aorund. I cant seem to calculate a decent port size with decent tuning. The optimum tuning for it is 18hz Can anyone help? I can go lsightly bigger and smaller of course. Thanks!

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[bimma85 5,000+ posts]

Ok so i plan on getting an alpine typ-x 12" subwoofer. Its recomended for a 2 ft3 box wich i can fit in my rig. I can only go depth wise 11" though. I downloaded winISD and have been playing aorund. I cant seem to calculate a decent port size with decent tuning. The optimum tuning for it is 18hz Can anyone help? I can go lsightly bigger and smaller of course. Thanks!

alpine recommends like 1.25 cubess @ 27hz iirc...dunno where you got those numbers. My buddy has one in 1.75 cubes tuned to like 32...sounds great and pretty dam loud.

 

[alpine3612 10+ year member]

tune to 30-35 hz, port area around 35 sq inches. 2-2.5 cuft