18FWS125W1 Subwoofers 18 inchs

Notes

INCH COPPER VOICE COIL  

96.7 dB/SPL SENSITIVITY  

3000 WATT PROGRAM POWER HANDING  

FEM OPTIMIZED MOTOR AND SUSPENSIONS  

- 46m PEAK TO PEAK MAXIMUM EXCURSION  

OPTIMIZED COOLING SYSTEM   

DOUBLE SPIDER   

RESONANCE FREE AND HEAVY DUTY BASKET DESIGN   

TRIPLE ROLL SURROUND

GENERAL SPECIFICATIONS

Nominal diameter 460(18) mm (in.)
Nominal impedance 8 Ω
Minimum impedance 7.5 Ω
Program power (1) 3000 W
AES Power rating(2) 1500 W
Sensitivity (3) 96.7 dB
Frequency range 36~1000 Hz
Voice coil diameter 125(5) mm (in.)
Chassis material Aluminium
Magnet material Ferrite
Magnet dimensions (ODxIDxh) 280x140x25 mm
Coil material SV
Former material Glass Fiber
Xmax(4) 14.5 mm
Xmech(5) 23 mm
Gap height 14 mm
Voice coil Winding height 36 mm

SMALL SIGNAL PARAMETERS

DC resistance(Re) 6 Ω
Resonance frequency(Fs) 36.1 Hz
Moving mass(Mms) 255 g
Compliance(Cms) 0.07 mm/N
Force factor(BL) 29.1 N/A
Mechanical Q-factor(Qms) 7.5
Electrical Q-factor(Qes) 0.40
Total Q-factor(Qts) 0.38
Equivalent air volume(Vas) 197 I
Voice coil Inductance(Le) 2.96 mH
Diaphragm area(Sd) 1325 cm2
Reference efficiency(Eta O) 2.62 %

SHIPPING INFORMATION

Net weight 20.8 Kg
Multipack size (1) (W x D x H) 485 x 485 x 260 mm
Multipack weight 22.6 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.