SF-18G402

18" Low Frequency Driver, 1200 Watts

  • 18″ LF Driver with a Frequency Range of 35 Hz ~ 2000 Hz

  • Ventilated voice coil gap for reduced power compression

  • Optimized Dual Spider designed with Silicon based Dampening control for low distortion

  • Weather-proof treatment on both sides of cone for outdoor usage

 

 

4.0 inch

Voice Coil

97.2 dB

Sensitivity

1200 Watts

Power

8 Ω

Impedance

Additional Info

General Specifications

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Nominal Diameter :   18.0 inches
Nominal Power Handling :   1200 Watts
Continous Power Handling :   2400 Watts
Voice Coil Size :   4.0” / 99.3 mm
Winding Type :   Inside-Outside
Winding Material :   Copper
Chassis Material :   Diecast Aluminium
Cone Surround :   Triple Roll
Spider :   Dual Silicon Spider

Technical Specifications

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Nominal Impedance :   8 Ω
Minimum Impedance :   6.3 Ω
Frequency :   35 Hz ~ 2000 Hz
Magnet Size :   220 * 110 * 25 mm
Magnet Type :   Ferrite
Magnet Grade :   Y35
Sensitivity :   97.2 dB
Flux Density :   1.2 T

Thiele - Small Parameters

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Resonance Frequency (Fs) :        35 Hz
DC Resistance (Re) :        5.2 Ω
Electrical Factor :        0.4 Qes
Mechanical Factor :        7.3 Qms
Total Factor :        0.38 Qts
Equivalent Cas Air Loaded (Vas) :       220.0 dm³ (7.7 ft³)
Effective Piston Area (Sd) :       1250 cm² (193.75 in²)
Voice coil Inductance @ 1kHz (Le) :       1.7 mH
Reference Effiiency (η₀) :       2.3 %
Max. Linear Excursion (Xmax) :      ± 9.0 mm
Usable Escues (Xvar) :      ± 11.5 mm
Effective Moving Mass (Mms) :       210.0 g
BI Factor (BI) :       25.8 T x m
Efficiency Bandwidth Product (EBP) :       95 Hz

Dimensions & Mounting Information

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Overall Diameter :   460 mm (18.0 in)
Bolt Circle Diameter :   440 mm (17.3 in)
Baffle Cut-Out Diameter :   422 mm (16.6 in)
Depth :   209 mm (8.2 in)
Flange & Gasket Thickness :   16 mm (0.63 in)
Net Weight :   13.5 kg
Shipping Weight :   15.0 kg
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