Overview4-inch, fiberglass inside/outside copper voice coil 3000W continuous program power handling 97.5 dB Sensitivity 25 Hz – 1 kHz Frequency range Dual Forced Hyperventing System Dual spider design with silicon based dampening control Triple-roll surround and corrugated straight cone geometry Specifications
Very linear frequency response characteristics, extreme high power handling while generating the lowest harmonic distortion of any comparable 18-inch transducer within its application range. The LF18X401 uses a fibre loaded cone assembly along with a high excursion triple roll surround. This combination provides remarkable strength and a peak to peak maximum excursion of 50 mm. The new dual forced hyper-venting system guarantee a very efficient voice coil ventilation for minimum power compression and incredible power handling.
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 : 25 - 1000 Hz
Effective piston diameter : 395 mm / 15.55 inch
Max. Excursion Before Damage : 50 mm / 1.97 inch
Minimum Impedance (ohm) : 6.5 ohm
Voice Coil Diameter : 4.0 inch / 102 mm
Voice Coil Winding Material : Copper
Voice Coil Length : 30 mm / 1.18 inch
Number of layers : 2
Kind of layers : inside/outside
Top Plate Thickness : 15 mm / 0.59 inch
Cone Design : Straight
Surround Material : Polycotton
Surround Design : Triple roll
Magnets : Ceramic
Dual-force air ventilation : Yes
Spider : 03
Thiele - small parameters
Resonance frequency (Fs) : 30 Hz
DC resistance (Re) (ohm) : 5.40 ohm
Mechanical factor : 7.40 Qms
Electrical factor : 0.31 Qes
Total factor : 0.30 Qts
Bl factor (Bl) (T x m) : 26.50 T x m
Effective moving mass (Mms) : 215.0 g
Equivalent Cas air loaded (Vas) : 274.0 liters
Effective piston area (Sd) : 0.120 m2
Max. linear excursion (Xmax) : 12 mm
Voice coil inductance @ 1kHz (Le1k) : 0.83 mH
Half-space efficency (Eff) : 2.30%
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 : 6.5 liters / 0.26 ft3
Standard compliance
Safety agency : CE compliant
Size / Weight
Height : 196 mm / 7.72 inches
Diameter : 465 mm / 18.31 inches
Weight : 12.5 kg / 27.56 lbs
Shipping information
Package Height : 254 mm / 10 inches
Package Width : 524 mm / 20.63 inches
Package Depth : 494 mm / 19.45 inches
Package Weight : 15 kg / 33.07 lbs
