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Author Topic: Driver for unloaded sub box?  (Read 5361 times)

Douglas R. Allen

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Driver for unloaded sub box?
« on: January 12, 2011, 08:00:02 pm »

I've been looking at a few drivers for a box I have. A peavey 1801-8 lt bw I have as a spare does measure ok in the box but I wanted to look at other drivers as well.
Box is 5.6 cubic feet after driver displacement is taken into account. It is tuned to 45hz. A 24 db per octave low cut will be used with 800 watts rms available but rms values around 200 watts will be the most expected.
The 3 drivers I'm looking at.

peavey 1808-8 sps bwx
Znom (ohms) 8
Revc (ohms) 6.71
Sd (Square Meters) 0.1237
BL (T/M) 16.26
Fo (Hz) 37.4
Vas (liters) 368.0
Cms (uM/N) 169.4
Mms (gm) 106.7
Qms 7.545
Qes 0.637
Qts 0.587
Xmax (mm) 4.60
Le (mH) 0.38
SPL (1W 1m) 96.7
No (%) 2.94%
Vd (cu. in. / ml) 69.4 / 1138
Pmax (Watts pgm.) 1000
Disp (cu. in. / ml) 228 / 3737

peavey 1808-8 cu bwx
Znom (ohms) 8
Revc (ohms) 5.93
Sd (Square Meters) 0.1237
BL (T/M) 23.12
Fo (Hz) 35.1
Vas (liters) 312.7
Cms (uM/N) 143.9
Mms (gm) 143.2
Qms 9.934
Qes 0.350
Qts 0.338
Xmax (mm) 4.6
Le (mH) 0.66
SPL (1W 1m) 97.7
No (%) 3.73%
Vd (cu. in. / ml) 69.4 / 1138
Pmax (Watts pgm.) 1000
Disp (cu. in. / ml) 228 / 3737

peavey 1808-8 he bwx
Znom (ohms) 8
Revc (ohms) 5.10
Sd (Square Meters) 0.1237
BL (T/M) 17.77
Fo (Hz) 39.9
Vas (liters) 281.5
Cms (uM/N) 129.6
Mms (gm) 122.6
Qms 9.954
Qes 0.497
Qts 0.473
Xmax (mm) 2.0
Le (mH) 0.32
SPL (1W 1m) 97.5
No (%) 3.50
Vd (cu. in. / ml) 29.5 / 483
Pmax (Watts pgm.) 1000
Disp (cu. in. / ml) 228 / 3737

All 3 drivers sport the same 500 rms 1000 program 2000 peak rating.
Would one of the 3 above be better suited for the 5.6 cubic foot box?

index.php/fa/34710/0/

My old IBM 365 with my win speaker box program has crashed so I can't plug them in right now.

Any ideas?

Douglas R. Allen
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Allen Audio

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"You can't teach common sense."
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