I'm making the box for a friends car. I was already planning on using
..5" MDF for the flat sections and f/glass on the contours. My
calculations are conservative estimates but it will be less than
recommended. I will construct it this weekend and let you know. It's
for a '95 Civic and it will at least look cool if it doesnt sound
right!

Kevin McMurtrie wrote in message ...
In article ,
(Jeff) wrote:

I'm making a custom sealed sub box for a 10" that requires .6 to 1
cubic foot. The problem is, for the location I want to put it in I
think I can only get .5 and that doesnt include speaker displacement.
I plan on stuffing with polyfill but what would the drawback be in
using a smaller box? Sound-wise and power handling.
Thanks

You'll loose a lot of low frequency efficiency and it may resonate at an
annoying tone. Polyfill can stop most of the resonation but it can't do
enough about the bass loss.

Try making a contoured fiberglass enclosure.