B&C 21SW115-8 21" Neo Subwoofer 8 ohm 3000 W continuous program power capacity
150 mm (6 in) copper voice coil
30 – 1000 Hz response
95 dB sensitivity
Ventilated voice coil and aluminium demodulating ring
60 mm peak-to-peak excursion before damage
Double silicone spider with optimized compliance
Nominal Diameter 530 (21) mm (in)
Nominal Impedance (1) 4 Ohm
Minimum Impedence 4 Ohm
Nominal Power Handling (2) 1500 W
Continuous Power Handling (3) 3000 W
Sensitivity (1W/1m) (4) 95 dB
Frequency Range 30 - 1000 Hz
Voice Coil Diameter 150 (6) mm (in)
Winding Material Copper
Former Material Glass Fibre
Winding Depth 30 (1.18) mm (in)
Magnetic Gap Depth 12 (1/2) mm (in)
Flux Density 1.2 T
Thiele & Small Parameters
Fs 29 Hz
Re 3.3 Ohm
Vas 254 (8.9) dm3 (ft3)
Sd 1680 (260.4) cm2 (in2)
Eta Zero 2 %
Xmax +/- 15 mm
Xvar +/- 16 mm
Mms 494 g
Bl 32.6 Txm
Le 1.3 mH
Mounting and Shipping Info
Overall Diameter 547 mm (21.5 in)
vBolt Circle Diameter 527 mm (20.7 in)
Baffle Cutout Diameter 508 mm (20 in)
Depth 250 mm (8.2 in)
vFlange and Gasket Thickness 15.5 mm (5/8 in)
Net Weight 18 kg (40 lb)
Shipping Weight 20.4 kg (44.9 lb)
Shipping Box 590x590x300 mm (23.2x23.2x11.8 in)
For different impedances, please ask.
22 hours test made with continuous pink noise signal (6 dB crest factor).
Power calculated on rated minimum impedance.
3Power on Continuous Program is defined as 3 dB greater than the
4Applied RMS Voltage is set to 2.83V for 8 ohms or 2.0V for 4 ohms
Model #: 21SW115-8
*Warranty: Full manufacturer's warranty applies.
This item is accompanied by a manufacturer's warranty. Most items, if found to be defective, may be returned to Savinglots.com for replacement within 30 days from the original date of purchase with proper return authorization. After the 30 day time period, products must be returned to their original manufacturer for the remainder of the manufacturer's warranty period.
Most manufacturers offer at least a 1 year warranty. Please check with the specific manufacturer for their warranty periods. Please email or call us with any questions if you are unable to find specific information.
Large items such as refrigerators, freezers will be serviced under warranty by the manufacturers recommended servicer at your location.
*Videos are for reference only, please refer to our features tab for exact model info.