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