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ThatChevyGuy
05-18-2008, 06:34 PM
Can someone verify that this box is 4.6 cubes at 29 hz?
Box width:36
Box height:16.5
box depth:21
wood thickness:0.75
port width:4.0
port length1:16.25
length2:12

Says 60 in^2 port area tuned to 29 hz. Just wanna make sure this isnt off because it cant be off.

ThatChevyGuy
05-18-2008, 07:43 PM
hello?

ultimate157
05-18-2008, 11:44 PM
Can someone verify that this box is 4.6 cubes at 29 hz?
Box width:36
Box height:16.5
box depth:21
wood thickness:0.75
port width:4.0
port length1:16.25
length2:12

Says 60 in^2 port area tuned to 29 hz. Just wanna make sure this isnt off because it cant be off.

Port area is correct.

Port volume is 0.67 cubes, including wall.

Box volume is 5.84 gross internal volume; 5.17 net.

hasa68mustang
05-19-2008, 12:13 AM
I put all of my box info into the RE calc and found out that I was "tuned" to 27 hz. I peaked at 27 hz I would say its pretty close.

BuckyBoy
05-19-2008, 12:20 AM
4.47ft^3 before sub displacement.

Not sure what your sub displacement is, but assuming net volume comes to 4.3ft^3, then your tuning is 29Hz.

snb778
05-19-2008, 12:25 AM
it is off... there is another thread about this posted about a week ago., i posted a huuuge explination in there, written by a member at SSA.com

ultimate157
05-19-2008, 08:06 PM
4.47ft^3 before sub displacement.

Not sure what your sub displacement is, but assuming net volume comes to 4.3ft^3, then your tuning is 29Hz.

36x16.5x21 = 7.21 cubes gross,
34.5x15x19.5 = 5.84 internal volume.

The port is 4.0 (+.75 for wall) x 15 x 16.25 = 0.67 cubes.

5.84 - 0.67 = 5.17...

snb778
05-19-2008, 08:17 PM
i think the whole issue was that it doesnt do the math for displacement, even though it allows you to enter it in.