21SW150 Subwoofer
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
LF Drivers LF Nd Drivers Coaxials HF Drivers Horns
Specification
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 |
Qes | 0.27 |
Qms | 8.1 |
Qts | 0.26 |
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 |
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Mounting and Shipping Info | |
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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 | 18 kg (40 lb) |
Shipping Weight | 20.4 kg (44.9 lb) |
Shipping Box | 590x590x300 mm |
| (23.2x23.2x11.8 in) |
1For 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 Nominal rating.
4Applied RMS Voltage is set to 2.83V for 8 ohms or 2.0V for 4 ohms Nominal Impedance