minimum space for 4 L7 15s?

[05_ZX636 10+ year member]

what is minimum amount of space for 4 L7 15's ported with tuning around 35hz for daily with interchangeable port to like 50hz for spl

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[itzme218 10+ year member]

3^3 for each one so about 12

 

[05_ZX636 10+ year member]

well, i calculated 16 cubes, maybe squeeze 17. I can run 4 inverted to save sub displacement. I just need to see if this port sounds right. I came up with 224 square inches of port and port opening would be 33.5" W x 6.75" H, does this sound like enough? And based on that, how long would port have to be to be tuned to 34-35hz?

 

[big_mofo 10+ year member]

what vehicle is this goin in????

 

[05_ZX636 10+ year member]

civic hatch. My box will be 18.6 cubes not counting sub and port. I will invert subs if i need to. I figured up port to be 33.5"W x 6.75"H and i think 20.5" Long. tuned to 35hz. I think after port displacement i should have 16 cubes. does any of this sound correct?