LF18G401 Woofer
The LF18G401 is a 18-inch woofer with linear frequency response cheracteristics and very high power handling. The LF18G401 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.
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
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) |
5.9 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) (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 |
208 mm / 8.19 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 |
