LF18N451 Woofer
The LF18N451 is a very high power handling and efficiency transducer specially designed to provide powerful and accurate sub-bass frequencies with low distortion and low power compression. Ultra fast time response. The LF18N451 uses a fibre loaded cone assembly along a large triple roll surround, this combination provides remarkable strength and control. Double silicon spider sysetm ensures excellent control during large excursions. A fully optimazed T-pole design generate the minimum amount of flux modulation. The Dual-forced air venting system provides a very efficient voice coil ventilation to minimize the power compression
Features
- 4,5 - inch Inside/Outside copper voice coil
- 3000 Watt continuous program power handling
- 97.5 dB Sensitivity
- 30 Hz - 1 kHz Frequency range
- Dual-forced air ventilation for minimum power compression
- Dual spider designed with silicon based damping control
- BL of 30.2 Txm to provide a faster and accurate low frequency
Specifications
General specifications
| Nominal Diameter |
18 inch / 457 mm |
| Rated Impedance |
8 ohm |
| Program Power (watt) |
3000 W |
| Power handling capacity |
1500 W |
| Sensitivity |
97.5 dB |
| Frequency range |
30 - 1000 Hz |
| Effective piston diameter |
395 mm / 15.55 inch |
| Max. Excursion Before Damage |
60 mm / 2.36 inch |
| Minimum Impedance (ohm) |
6.3 ohm |
| Voice Coil Diameter |
4.5 inch / 114 mm |
| Voice Coil Winding Material |
Copper |
| Voice Coil Length |
26 mm / 1.02 inch |
| Number of layers |
2 |
| Kind of layers |
inside/outside |
| Top Plate Thickness |
15 mm / 0.59 inch |
| Cone Design |
Curved |
| Surround Material |
Polycotton |
| Surround Design |
Triple roll |
| Magnets |
Neodymium |
| Dual-force air ventilation |
Yes |
| Spider |
Dual with silicon based damping control |
Thiele - small parameters
| Resonance frequency (Fs) |
31 Hz |
| DC resistance (Re) (ohm) |
5.00 ohm |
| Mechanical factor |
6.00 Qms |
| Electrical factor |
0.25 Qes |
| Total factor |
0.24 Qts |
| Bl factor (Bl) (T x m) |
30.20 T x m |
| Effective moving mass (Mms) |
235.0 g |
| Equivalent Cas air loaded (Vas) |
245.0 liters |
| Effective piston area (Sd) |
0.120 m2 |
| Max. linear excursion (Xmax) |
9 mm |
| Voice coil inductance @ 1kHz (Le1k) |
2.60 mH |
| Half-space efficency (Eff) |
2.54% |
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 |
425 mm / 16.73 inch |
| Volume occupied by the driver |
5.5 liters / 0.22 ft3 |
Standard compliance
| Safety agency |
CE compliant |
Size / Weight
| Height |
223 mm / 8.78 inches |
| Diameter |
465 mm / 18.31 inches |
| Weight |
10.5 kg / 23.15 lbs |
Shipping information
| Package Height |
240 mm / 9.45 inches |
| Package Width |
510 mm / 20.08 inches |
| Package Depth |
480 mm / 18.9 inches |
| Package Weight |
12.5 kg / 27.56 lbs |
