Overview4,0 - inch Inside/Outside copper voice coil 3000 Watt continuous program power handling 97.5 dB Sensitivity 25Hz - 1kHz Frequency range Hypervented magnetic structure for minimum power compression Triple roll surround and exponential cone geometry Specifications
The LF18N405 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 LF18N405 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 optimised T-pole design generates the minimum amount of flux modulation. The Dual-forced air venting magnetic structure system provides a very efficient voice coil ventilation to minimize the power compression.
Features 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 : 30 - 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 Winding Material : Copper
Voice Coil Length : 36 mm / 1.42 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
Hypervented magnetic structure : Yes
Spider : 01
Thiele - small parameters
Resonance frequency (Fs) : 30 Hz
DC resistance (Re) (ohm) : 4.90 ohm
Mechanical factor : 7.00 Qms
Electrical factor : 0.34 Qes
Total factor : 0.32 Qts
Bl factor (Bl) (T x m) : 26.50 T x m
Effective moving mass (Mms) : 261.0 g
Equivalent Cas air loaded (Vas) : 227.0 liters
Effective piston area (Sd) : 0.120 m2
Max. linear excursion (Xmax) : 14 mm
Voice coil inductance @ 1kHz (Le1k) : 1.70 mH
Half-space efficency (Eff) : 1.70%
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 : 208 mm / 8.19 inches
Diameter : 465 mm / 18.31 inches
Weight : 8.8 kg / 19.4 lbs
Shipping information
Package Height : 255 mm / 10.04 inches
Package Width : 495 mm / 19.49 inches
Package Depth : 525 mm / 20.67 inches
Package Weight : 10 kg / 22.05 lbs
