B&C (B and C) 21SW150 21" Subwoofer

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Specifications:
*Power handling: 1,500 watts RMS, 3,000 watts continuous program
*VCdia: 6"
*Le: 1.3 mH
*Impedance: 4 ohms
*Re: 3.3 ohms
*Frequency response: 30-1,000 Hz
*Fs: 29 Hz
*SPL: 95 dB 1W/1m
*Vas: 8.9 cu. ft. *Qms: 8.1 *Qes: 0.27
*Qts: 0.26
*Xmax: 15 mm
*Dimensions: A: 21.5" B: 20" C: 8.2"

* 3,000 watt continuous program power capacity
* 6" copper voice coil wound on glass fiber former
* 30-1,000 Hz response
* 95 dB sensitivity
* 60 mm peak-to-peak excursion before damage
* Neodymium ring magnet allows a very high force factor and linear excursion
* Double silicone spider with optimized compliance
* Ventilated voice coil gap for reduced power compression
* Aluminum demodulating ring decreases distortion
* Undercut pole piece
* Triple roll surround
* Double silicone spider
* Water-resistant cone coating




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