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

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 Winding Material

Copper

Voice Coil Length

23 mm / 0.91 inch

Number of layers

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

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

Standard compliance

Safety agency

CE compliant

Size / Weight

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

SPECIFICATIONS

SPECSHEET - ENG

PDF

502 KB

08-10-2024

ACOUSTIC MEASUREMENTS

PDF

62 KB

11-07-2024

DRAWINGS

LINE ART 2D

PDF

298 KB

21-03-2018

Icone allineate