1. ## Finding ideal enclosure volume w/ Fs, Qts, Vas etc ??

Ok, I thought the sub would have a recommended volume for a sealed enclosure... NOPE. I have some books but they don't help. These are the specs in the manual:
Fs = 27Hz
Qts = 0.30
Vas = 3.2 Ft^2
Qes = 0.32
Qms = 5.0
Sd = 490cm^2

I don't know what any of this means. My book says:
fob = Fs/Qts ... so Fob = 90
Vof = Vas * Qts^2 ... so Vof = .288

The manual then says to always make sure you make the enclosure 10% larger than required. Vof = 0.317? Woofer internal volume = .19 Ft^2
So... 0.507 is the volume needed?

The manual keeps using ft^2 (feet squared). Isn't it ft^3 (feet cubed)?

2. ## Re: Finding ideal enclosure volume w/ Fs, Qts, Vas etc ??

Originally posted by slaphappy
Ok, I thought the sub would have a recommended volume for a sealed enclosure... NOPE. I have some books but they don't help. These are the specs in the manual:
Fs = 27Hz
Qts = 0.30
Vas = 3.2 Ft^2
Qes = 0.32
Qms = 5.0
Sd = 490cm^2

I don't know what any of this means. My book says:
fob = Fs/Qts ... so Fob = 90
Vof = Vas * Qts^2 ... so Vof = .288

The manual then says to always make sure you make the enclosure 10% larger than required. Vof = 0.317? Woofer internal volume = .19 Ft^2
So... 0.507 is the volume needed?

The manual keeps using ft^2 (feet squared). Isn't it ft^3 (feet cubed)?

Download winisd from www.linearteam.dk, then input these parameters. It'll do the math for you, so you don't have to be concerned with the extra figures.

3. Thanks for the tip! I just downloaded winisd, plugged the numbers in, and presto.

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