Features
4000 W continuous program power capacity
153 mm (6 in) split winding copper voice coil
30 - 1000 Hz response
96 dB sensitivity
Neodymium magnet allows a very high force factor and linear excursion
Double silicone spider with optimized compliance
Ventilated voice coil gap for reduced power compression
Aluminium demodulating ring for very low distortion
Specifications
Nominal Diameter
530 mm (21 in)
Nominal Impedance
4 Ω
Minimum Impedance
4.2 Ω
Nominal Power Handling
2000 W
Continuous Power Handling
4000 W
Sensitivity
96 dB
Frequency Range
30 Hz - 1000 Hz
Voice Coil Diameter
153 mm (6 in)
Winding Material
Copper
Former Material
Glass Fibre
Winding Depth
30 mm (1.18 in)
Magnetic Gap Depth
12 mm (0.5 in)
Flux Density
1.2 T
Woofer Cone Treatment
TWP Waterproof Both Sides
Parameters
Fs
32 Hz
Re
3.3 Ω
Qes
0.31
Qms
7
Qts
0.3
Vas
200 dm³ (7 ft³)
Sd
1680 cm² (260.4 sq²)
η0
2.2 %
Xmax
15 mm
Xvar
16 mm
Mms
460 g
Bl
32.5 Tm
Le
1.5 mH
EBP
103 Hz
Design
Surround Shape
Triple Roll
Cone Shape
Radial
Magnet Material
Neodymium Inside Slug
Spider
Double Silicone
Pole Design
T-Pole
Woofer Cone Treatment
TWP Waterproof Both Sides
Recommended Enclosure
190 dm³ (6.71 ft³)
Recommended Tuning
33 Hz
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
261 mm (10.3 in)
Flange and Gasket Thickness
16 mm (0.63 in)
Air Volume Occupied by Driver
16 dm³ (0.56 ft³)
Net Weight
18.5 kg (40.7 lb)
Shipping Units
1 pcs
Shipping Weight
20.8 kg (45.86 lb)
Shipping Box
570x570x320 mm (22.44x22.44x12.60 in)
Service Kit
lf Recone Kit
RCK21SW1524
Cone
Gasket
Dust Cap
Wooterprof Treatment
Centering Shims
Heat Shrink Tube