Features
  • 4,0 - inch Inside/Outside copper voice coil
  • 3000 Watt continuous program power handling
  • 97 dB Sensitivity
  • 25 Hz - 1 kHz Frequency range
  • Hypervented magnetic structure for minimum power compression
  • Triple roll surround and exponential cone geometry
  • Double aluminum demodulation rings

The LF18N408 is an extended low frequency with high power handling, designed to provide powerful and accurate bass frequencies with low distortion, low power compression and very high SPL. The LF18N408 uses a fibre loaded cone assembly along a large triple roll surround, this combination provides remarkable strength and control. The single spider system is specifically designed with a heavy cloth which ensures excellent control during large excursions. A fully optimized T-pole together with doublendemodulating rings are designed to reduce flux modulations with benefits on harmonic and intermodulation distortions while improving the transient response. The Dual-forced air venting magnetic structure system provides a very efficient voice coil ventilation to minimize the power compression.

Part number:

11100145
LF18N408

Specifications
General specifications
Nominal Diameter
18 inch / 457 mm
Rated Impedance
8 ohm
Program Power (watt)
3000 W
Power handling capacity
1500 W
Sensitivity
97.0 dB
Frequency range
25 - 1000 Hz
Effective piston diameter
395 mm / 15.55 inch
Max. Excursion Before Damage
58 mm / 2.28 inch
Minimum Impedance (ohm)
6.0 ohm
Voice Coil Diameter
4.0 inch / 102 mm
Voice Coil Length
38 mm / 1.5 inch
Number of layers
2
Kind of layers
inside/outside
Top Plate Thickness
15 mm / 0.59 inch
Cone Design
Curved
Surround Design
Triple roll
Hypervented magnetic structure
Yes
Number of Demodulation Rings
2
Demodulation Ring
Yes
Thiele - small parameters
Resonance frequency (Fs)
30 Hz
DC resistance (Re) (ohm)
4.30 ohm
Mechanical factor
3.60 Qms
Electrical factor
0.36 Qes
Total factor
0.33 Qts
Bl factor (Bl) (T x m)
25.70 T x m
Effective moving mass (Mms)
284.0 g
Equivalent Cas air loaded (Vas)
193.0 liters
Effective piston area (Sd)
0.122 m2
Max. linear excursion (Xmax)
15 mm
Voice coil inductance @ 1kHz (Le1k)
1.56 mH
Half-space efficency (Eff)
1.57%
Mounting information
Overall diameter
465 mm / 18.31 inches
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
Size
Height
223.5 mm / 8.8 inches
Diameter
465 mm / 18.31 inches
Cut out diameter
423 mm / 16.65 inches
Weight
9 kg / 19.84 lbs
Shipping information
Package Height
270 mm / 10.63 inches
Package Width
520 mm / 20.47 inches
Package Depth
495 mm / 19.49 inches
Package Weight
10.2 kg / 22.49 lbs
Downloads
SPECIFICATIONS
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22-01-2024