18inch 4-ohm 2000W rms Subwoofer

Nominal diameter 460(18) mm (in.)
Nominal impedance 4 Ω
Minimum impedance 4.6 Ω
Program power (1) 4000 W
AES Power rating(2) 2000 W
Sensitivity (3) 95.1 dB
Frequency range 35~1000 Hz
Voice coil diameter 151(6) mm (in.)
Chassis material Aluminium
Magnet material Ferrite
Magnet dimensions (ODxIDxh) 300 x 170 x 30 mm
Coil material SV
Former material Glass Fiber
Xmax(4) 16.5 mm
Xmech(5) 25 mm
Gap height 14 mm
Voice coil Winding height 40 mm

DC resistance(Re) 3.6 Ω
Resonance frequency(Fs) 34.7 Hz
Moving mass(Mms) 365 g
Compliance(Cms) 0.06 mm/N
Force factor(BL) 26.3 N/A
Mechanical Q-factor(Qms) 6.8
Electrical Q-factor(Qes) 0.44
Total Q-factor(Qts) 0.42
Equivalent air volume(Vas) 159 I
Voice coil Inductance(Le) 3.27 mH
Diaphragm area(Sd) 1325 cm2
Reference efficiency(Eta O) 2.1 %

Net weight 24 Kg
Multipack size (1) (W x D x H) 485X485X270 mm
Multipack weight 25.8 Kg