PDA

View Full Version : Can a box builder confirm these numbers please?



bmoney9
06-24-2010, 01:47 AM
I just want to see if my numbers that I have are right for my ported box for a 12" FI BL. I wanted it at 33 tuning hertz with the max height of 17" and max width at 30". I then found the depth to be 15.159". I will be using 40 inches total for port area. The net cubic ft of the box is supposed to be 2.5'.

So in basic terms I got my box to be 30 x 15.159 x 17
L W H
port width : 2.581
port length : 27.170

Displacement of sub was .18 if you need that info. MDF thickness is .75 as well.

Does this sound right?

bmoney9
06-24-2010, 04:18 AM
bump..

bmoney9
06-24-2010, 01:52 PM
bump

spltuscon
06-24-2010, 02:11 PM
Nope. Your box volume calculation was fine based on that info, but the port length was about 6 inches to short.

Change box depth to 15.625, port width to 2.5" (x 15.5"h) and port length to 32" and you'll be spot on.

Good luck!

bmoney9
06-24-2010, 04:11 PM
Nope. Your box volume calculation was fine based on that info, but the port length was about 6 inches to short.

Change box depth to 15.625, port width to 2.5" (x 15.5"h) and port length to 32" and you'll be spot on.

Good luck!

Thank you!