Alright so im going to have a pretty big box in the back seat of my quad cab, 35w 31h 17d before displacement of the sub and wood. The cab in a 99 dodge really isnt big, so its a big box and big sub in a small space. What do you think the tuning should be? i want it to get loud and low, and i was thinking 30hz. (actually like 29.7 or something) opinions?

Also the sub and port will be on the 31x35 side of the box on opposite ends. Or should i center the sub?

Probably shoot a little higher than that if you want it to be loud. See where 33-35hz puts you.

Alright thanks i'll try that, anyone gotta different opinion on that? another question is, should there be a certain ratio to follow when making a port, like L:W, because i may have a problem with my 4x29 inch port...

I would tune to 33 Hz as already stated.

4 x 29 port will work fine. How much net airspace?

I have always heard you do not want to go any higher that a 1:8 ratio on Width x Height.

Brian

Edited February 25, 200817 yr by BKOLFO4

Just don't go any narrower then 4"..you'll start getting into noise issues

Thanks!

-Nick

Thanks for the input everyone... and NDmstang, just curious, why is it that you get noise issues at <4"?

"?

Ever heard a 4 cyl tailpipe on a V8?

Nope, hope i never do.