formulas for calculating optimal airspace using T/S parameters

[mcsoul 10+ year member]

I would like to know how to use T/S parameters to calculate the

optimal sealed enclosure size of any given woofer. I already

know how to determine if the woofer is appropriate for sealed

applications (EBP); now I need the size of the enclosure.

I am considering the 12" dayton HO or MKiii.

HO:

Specifications: *Power handling: 700 watts RMS/1200 watts max *VCdia: 2-1/2" *Le: 1.75 mH *Impedance: 4 ohms *Re: 3.4 ohms *Frequency range: 26 - 600 Hz *Fs: 26 Hz *Magnet weight: 150 oz. *SPL: 88 dB 2.83 V/1m *Vas: 1.62 cu. ft. *Qms: 4.00 *Qes: .44 *Qts: .40 *Xmax: 12mm

MKiii:

Specifications: *Power handling: 500 watts RMS/700 watts max *VCdia: 2-1/2" *Le: 3.17 mH *Impedance: 4 ohms *Re: 3.07 ohms *Frequency range: 22-500 Hz *Magnet weight: 100 oz. *Fs: 22.2 Hz *SPL: 88.6 dB 2.83V/1m *Vas: 2.61 cu. ft. *Qms: 6.12 *Qes: .47 *Qts: .44 *Xmax: 18.7 mm

I'm also looking for the formulas so I can calculate this myself.

Click to read more...

 

[RAM_Designs 5,000+ posts]

Download winISD. It's free, easy to use, and it's pretty accurate.

Doing calculations by hand is a waste of time when you can put in t/s parameters into a program and have a repsonse curve to look at.

 

[mcsoul 10+ year member]

I did, but to be honest I don't exactly know how to use it.

Are the formulas that complex?

 

[RAM_Designs 5,000+ posts]

I did, but to be honest I don't exactly know how to use it.
Are the formulas that complex?

It's very, very easy to use...compared to most other programs. Don't get the "pro" version, it's a pain to use from when I've tried.

 

[mcsoul 10+ year member]

OK I got it working I think. But the box

size says 1.6 for the MKiii and .8 for the HO.

I think these are accurate, but the unit it says

is l or liters. I thinks it's a bug, because when I

go cubic feet, the values look way off.

Anyone know?

 

[pawn man 10+ year member]

term pro