CUSTOM
PRECISION TRANSDUCERS

LF18G908

WOOFER
  • 4-inch, fiberglass inside/outside copper voice coil
  • 1800W continuous program power handling
  • 98 dB Sensitivity
  • 30 Hz – 1 kHz Frequency range
Where to buy
Features Specifications Downloads
Where to buy
Features
  • 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.

CUSTOM

Part number:

11100140
LF18G908
8ohm

Specifications
General specifications
Nominal Diameter
18 inch / 457 mm
Rated Impedance
8 ohm
Program Power (watt)
1800 W
Power handling capacity
900 W
Sensitivity
98.0 dB
Frequency range
30 - 1000 Hz
Effective piston diameter
395 mm / 15.55 inch
Max. Excursion Before Damage
50 mm / 1.97 inch
Minimum Impedance (ohm)
6.0 ohm
Voice Coil Diameter
4.0 inch / 102 mm
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 Design
Triple roll
Thiele - small parameters
Resonance frequency (Fs)
33 Hz
DC resistance (Re) (ohm)
4.80 ohm
Mechanical factor
7.60 Qms
Electrical factor
0.30 Qes
Total factor
0.29 Qts
Bl factor (Bl) (T x m)
24.60 T x m
Effective moving mass (Mms)
182.0 g
Equivalent Cas air loaded (Vas)
268.0 liters
Effective piston area (Sd)
0.120 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
Size
Height
196 mm / 7.72 inches
Diameter
465 mm / 18.31 inches
Weight
13 kg / 28.66 lbs
Shipping information
Package Height
260 mm / 10.24 inches
Package Width
500 mm / 19.69 inches
Package Depth
520 mm / 20.47 inches
Package Weight
15 kg / 33.07 lbs
Downloads
SPECSHEETS
SPECSHEET - ENG
PDF
568 KB
22-01-2024
DRAWINGS
LINE ART 2D
PDF
298 KB
21-03-2018