B&C Speakers 21SW150 Specification

21SW150
Subwoofer
3000 W continuous program power capacity
Ventilated voice coil and aluminium demodulating ring
60 mm peak-to-peak excursion before damage
Double silicone spider with optimized compliance
150 mm (6 in) copper voice coil
30 – 1000 Hz response
95 dB sensitivity
Specification
Nominal Diameter 530 (21) mm (in)
Nominal Impedance (1)
Minimum Impedence
Nominal Power Handling (2)
Continuous Power Handling (3)
Sensitivity (1W/1m) (4)
Frequency Range 30 - 1000 Hz
Voice Coil Diameter 150 (6) mm (in)
Winding Material
Former Material
Winding Depth 30 (1.18) mm (in)
Magnetic Gap Depth 12 (1/2) mm (in)
Flux Density
Thiele & Small Parameters
Fs
Re
Qes
Qms
Qts
Vas 254 (8.9) dm3 (ft3)
Sd 1680 (260.4) cm2 (in2)
Eta Zero
Xmax
Xvar
Mms
Bl
Le
Mounting and Shipping Info
Overall Diameter 547 mm (21.5 in)
Bolt Circle Diameter 527 mm (20.7 in)
Baffle Cutout Diameter 508 mm (20 in)
Depth 250 mm (8.2 in)
Flange and Gasket Thickness 15.5 mm (5/8 in)
Net Weight
Shipping Weight 20.4 kg (44.9 lb)
Shipping Box 590x590x300 mm
(23.2x23.2x11.8 in)
1 For different impedances, please ask.
2 2 hours test made with continuous pink noise signal (6 dB crest factor).
Power calculated on rated minimum impedance.
3 Power on Continuous Program is defined as 3 dB greater than the
Nominal rating.
4 Applied RMS Voltage is set to 2.83V for 8 ohms or 2.0V for 4 ohms
Nominal Impedance
4 Ohm
4 Ohm
1500 W
3000 W
95 dB
Copper
Glass Fibre
1.2 T
29 Hz
3.3 Ohm
0.27
8.1
0.26
2 %
+/- 15 mm
+/- 16 mm
494 g
32.6 Txm
1.3 mH
18 kg (40 lb)