LF18G908
WOOFER
  • 4-inch, fiberglass inside/outside copper voice coil
  • 1800W continuous program power handling
  • 98 dB Sensitivity
  • 30 Hz – 1 kHz Frequency range
  • 4-inch, fiberglass inside/outside copper voice coil
  • 1800W continuous program power handling
  • 98 dB Sensitivity
  • 30 Hz – 1 kHz Frequency range
  • Dual spider design with silicon based dampening control
  • Triple-roll surround and corrugated straight cone geometry
The LF18G908 is a 18-inch woofer with linear frequency response cheracteristics and very high power handling. The LF18G908 uses a fibre loaded cone assembly along with a high excursion triple roll, constant geometry surround. This combination provides remarkable strength and peak to peak maximum excursion of 50mm.

Part Number:

  • 11100140
    LF18G908
    8ohm
Specifications
General specifications
Nominal Diameter:
18 inch / 457 mm
Rated Impedance:
8 ohm
Program Power:
1800 W
Power handling capacity:
900 W
Sensitivity:
98 dB
Frequency range:
30 - 1000 Hz
Effective piston diameter:
395 mm / 15.55 inch
Max. Excursion Before Damage:
50 mm / 1.97 inch
Minimim Impedance:
6 ohm
Voice Coil Diameter:
4.0 inch / 102 mm
Voice Coil Winding Material:
Copper
Voice Coil Length:
23 mm / 0.91 inch
Number of layers:
2
Kind of layers:
inside/outside
Top Plate Thickness:
12 mm / 0.47 inch
Cone Design:
Straight
Surround Material:
Polycotton
Surround Design:
Triple roll
Magnets:
Ceramic
Spider:
Dual with silicon based damping control
Thiele - small parameters
Resonance frequency (Fs):
33 Hz
DC resistance (Re):
4.80 ohm
Mechanical factor:
7.60 Qms
Electrical factor (Qes):
0.30 Qes
Total factor:
0.29 Qts
BL factor (BL):
24.60 T x m
Effective moving mass (Mms):
182 gr
Equivalent Cas air loaded (Vas):
268 liters
Effettive piston area (Sd):
0.12 m2
Max. linear excursion (Xmax):
9 mm
Voice coil inductance @ 1kHz (Le1k):
1.80 mH
Half-space efficency (Eff):
3.09%
Mounting Information
Overall diameter:
465 mm / 18.31 inches
Bolt circle diameter:
442-447 mm / 17.4-17.6 inch
Bolt hole diameter:
7 mm / 0.28 inch
Front mount baffle cut-out:
424 mm / 16.69 inch
Rear mount baffle cut-out:
424 mm / 16.69 inch
Volume occupied by the driver:
6 liters / 0.24 ft3
Standard compliance
CE marking:
Yes
Size
Weight:
13 kg / 28.66 lbs
Height:
196 mm / 7.72 inches
Diameter:
465 mm / 18.31 inches
Shipping informations
Package Width:
500 mm / 19.69 inches
Package Weight:
15 kg / 33.07 lbs
Package Height:
260 mm / 10.24 inches
Package Depth:
520 mm / 20.47 inches
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