21SW150
Subwoofer
LF Drivers
LF Nd Drivers
Coaxials
HF Drivers
Horns
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
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
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
18 kg (40 lb)
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
