18FWS125V2D Subwoofers 18 inchs

Notes

5 INCH COPPER VOICE COIL 

97.4 dB/SPL SENSITIVITY 

4000 WATT PROGRAM POWER HANDING 

FEM OPTIMIZED MOTOR AND SUSPENSIONS 

52mm PEAK TO PEAK MAXIMUM EXCURSION  

OPTIMIZED COOLING SYSTEM  

DOUBLE SPIDER   

RESONANCE FREE AND HEAVY DUTY BASKET DESIGN  

TRIPLE ROLL SURROUND

GENERAL SPECIFICATIONS

Nominal diameter 461(18) mm (in.)
Nominal impedance 8 Ω
Minimum impedance 7.9 Ω
Program power (1) 4000 W
AES Power rating(2) 2000 W
Sensitivity (3) 97.4 dB
Frequency range 34 ~ 1000 Hz
Voice coil diameter 125(5) mm (in.)
Chassis material Aluminium
Magnet material Ferrite
Magnet dimensions (ODxIDxh) 280 x 140 x 25 2pcs mm
Coil material SV
Former material Glass Fiber
Xmax(4) 17.5 mm
Xmech(5) 26 mm
Gap height 14 mm
Voice coil Wingding height 42 mm

SMALL SIGNAL PARAMETERS

DC resistance(Re) 6 Ω
Resonance frequency(Fs) 34 Hz
Moving mass(Mms) 279 g
Compliance(Cms) 0.08 mm/N
Force factor(BL) 30.1 N/A
Mechanical Q-factor(Qms) 7.9
Electrical Q-factor(Qes) 0.37
Total Q-factor(Qts) 0.35
Equivalent air volume(Vas) 226 I
Voice coil Inductance(Le) 2.9 mH
Diaphragm area(Sd) 1325 cm2
Reference efficiency(Eta O) 2.9 %

SHIPPING INFORMATION

Net weight 25.7 Kg
Multipack size (1) (W x D x H) 485 x 485 x 265 mm
Multipack weight 27.7 Kg

OTHERS

(1)Program power is defined as 3 dB greater than AES Power.
(2) Tested for two hours using a continuous, band-limited pink noise signal as per AES 2-1984 Rev. 2003. Loudspeaker tested in free air.
(3) From T/S parameters, measured with LMS DA LPM module.
(4) The Xmax is calculated as: (Hvc - Hg)/2+ Hg/4. Hvc is the voice coil height and Hg the gap height.
(5) The Xmech is calculated as: (Hvc - Hg)/2 +(Hg-2). Hvc is the voice coil height and Hg the gap height.
(6) Thiele-Small parameters are measured after preconditioning: a) at 20°C- 22°C, 50% humidity for 2 hours; b) by LMS LSI measurement.