View Full Version : Fiberglass Box - Need help with port size

10-31-2006, 11:42 PM
Im using a Diamond D6.
Specs ^

My box when its done should yield me 1.3cu. I wanted to port it, using a round port. I just dont really understand the calculations on how to determine the size, maybe you guys can help! I looked at the specs, but 24" long is really long.

Im trying to tune for 35hz, what do you think the size of the port should be?

10-31-2006, 11:47 PM
go here, psp-inc.com
use their port calculator. It will have to be pretty long since you have such a small internal volume.

10-31-2006, 11:54 PM
why thank you.

so does 3x10.77 or 2x4.85 sound right?

11-01-2006, 12:32 AM
Id go with a 4" port. Looks like thats what they reccomend for port area. I got 19.34 inches with a 4" flared port.

11-01-2006, 08:27 AM
can round ports be bent 90 degrees? I will NOT be able to fit that large of a port if not.