Posted December 3, 200816 yr Box is for a FI BL 12 in a Dodge Stratus. I went with a 28Hz tuning for more SQ over SPL. Please share your thoughtsPort Type: 4" Flared Port Port Tuning: 28 Hz Number of Ports: 1 Net Internal Volume: 2.5 cubic feet Port Volume: 0.0066 cubic feet Subwoofer Displacement: 0.1500 cubic feet per subwoofer Total Internal Volume: 2.6566 cubic feet Number of Terminal Cups: 1 per subwoofer Front Baffle: Single-Layer Front Baffle - 3/4" Thick Box Dimensions: 22.625" (w) x 20.125" (d) x 13.75" (h)
December 3, 200816 yr not bad but id use more port area like 2 4" or just do a slot port with like 30in of port area it will need to be 36in long.
December 3, 200816 yr more port area. at least 2, even 3 four inch ports would do a lot better. like stated, a slot port would be a good idea imo
December 3, 200816 yr think about what Fi recommends. scott recommends 12-16 sq. inches per cube, just like most of the sub companies out there. you have 5 per, you have too little port, and you'll definately have PORT NOISE.
December 3, 200816 yr I don't know how you got the port volume to be 0.0066 cubic feet, but it's wrong. It has to be more than that.
December 3, 200816 yr Port displacement has to be ATLEAST .09 cubic feet or sowith a 2.656 cubic foot box and one 4" areo port you'd need a length of 12.75 to get a 28hz tuningso.. pi x r^2 x Length3.14x4x12.75=160.14cubic incheswhich converts to .09267 cubic feet 160.14/1728And as everyone else has stated, run atleast one 6" or 2-4" portsthe only issue is you're box will have to be slightly larger and the two ports will have to be roughly 29" long