Fiberglass Box - Need help with port size

[redphoenix]

Im using a Diamond D6.
http://www.diamondaudio.com/products...h%20Sheet2.pdf
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?

[bjfish11]

go here, psp-inc.com
use their port calculator. It will have to be pretty long since you have such a small internal volume.

[redphoenix]

why thank you.

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

[bjfish11]

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.

[redphoenix]

can round ports be bent 90 degrees? I will NOT be able to fit that large of a port if not.
http://www.partsexpress.com/pe/showd...number=268-334