View Full Version : Rebuilding my box

headbussaboi

10-31-2008, 07:36 PM

The first one didn't fit like I wanted to. I'm working with 2 RE SX 12's. I have the measurements for my box. I'm going to do 36x15x16.5 (WxHxD). Internal volume should be 4.04. What I need to know is if I port using two 4" PVC tubes...

1. How long does each need to be to tune @ 35 hz?

2. How much airspace do the tubes displace?

headbussaboi

10-31-2008, 08:08 PM

Help me here guys. I need some bass but **** at math!

IDSkoT

10-31-2008, 08:13 PM

Uhh... with 2 4" Round ports w/ 4.04 Cuft @ 35 hz each port will be 11.40" long...

The volume of a cylinder equals the (area of the base)*height = (pi)r^(2)h

3.14(4)(11.4) = 143.184 * 2 = 286.368 Inch^3

286.368/1728 = .1657 cuFt.

Stop being a douche and Google it next time.

headbussaboi

10-31-2008, 08:15 PM

Uhh... with 2 4" Round ports w/ 4.04 Cuft @ 35 hz each port will be 11.40" long...

The volume of a cylinder equals the (area of the base)*height = (pi)r^(2)h

3.14(4)(11.4) = 143.184 * 2 = 286.368 Inch^3

286.368/1728 = .1657 cuFt.

Stop being a douche and Google it next time.

Thanks. Believe it or not, I'm sitting here on google trying to figure it out:laugh:.