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Fostex 31.5” SUPER WOOFER
Hybrid pulp cone
96db sensitivity
8 ohm impedance
Frequency response from 18 Hz to 1.5 kHz
Flange 800mm
Cut-out 748mm
Depth 291mm
So Fostex makes a 31.5" woofer with really strange specs.
It will put out a reasonably flat signal to below 10hz if you have an eclosure that’s just over 2,000 cubic feet.
Or you can get flat to 18hz with a sealed enclosure of just 664 cubic feet.
Xmax is only 2.3mm. But it’s 96db efficient.
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