Overview4,5 - 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
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 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 : 03
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
