box design help

[celica-gts]

im looking for someone who to help me build a bandpass box for a hd315. i have made a few ported boxes but never a bandpass box and none of my ported boxes ever seemed to turn out right so im looking for some help and i want a bandpass box someone please help me with a design

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[galacticmonkey 5,000+ posts]

Whats your usable dimensions? I could design you a bandpass.

 

[mlstrass 5,000+ posts]

I'd build a proper ported box first. 4 - 4.5cubes @ 38Hz with 16^2 of port area per cube. How much power do you have for the sub? And what type of music? If mostly new rap then tune at 35Hz, so you're not playing below tuning all the time...

 

[azimuth 5,000+ posts]

not to knock you, but if you can't get a ported box right, building a bandpass will be a nightmare for you.