The LF15X401 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.
• 4-inch, fiberglass inside/outside copper voice coil
• 3000W continuous program power handling
• 96.5 dB Sensitivity
• 30 Hz 1.5 kHz Frequency range
• Dual Forced Hyperventing System
• Dual spider design with silicon based dampening control
• Triple-roll surround and corrugated straight cone geometry
General specifications
Cone Design: Straight
Dual-force air ventilation: Yes
Effective piston diameter: 340 mm / 13.39 inch
Frequency range: 30 - 1500 Hz
Kind of layers: inside/outside
Magnets: Ceramic
Max. Excursion Before Damage: 50 mm / 1.97 inch
Minimim Impedance: 6 ohm
Nominal Diameter: 15 inch / 381 mm
Number of layers: 2
Power handling capacity: 1500 W
Program Power: 3000 W
Rated Impedance: 8 ohm
Sensitivity: 96 dB
Spider: Dual with silicon based damping control
Surround Design: Triple roll
Surround Material: Polycotton
Top Plate Thickness: 15 mm / 0.59 inch
Voice Coil Diameter: 4.0 inch / 102 mm
Voice Coil Material: Copper
Voice Coil Winding Material: 30 mm / 1.18 inch
Mounting Information
Bolt circle diameter: 371-376 mm / 14.61-14.8 inch
Bolt hole diameter: 7 mm / 0.28 inch
Front mount baffle cut-out: 354 mm / 13.94 inch
Overall diameter: 393 mm / 15.47 inches
Rear mount baffle cut-out: 354 mm / 13.94 inch
Volume occupied by the driver: 4.3 liters / 0.17 ft3
Size
Diameter: 393 mm / 15.47 inches
Height: 161 mm / 6.34 inches
Weight: 12 kg / 26.46 lbs
Standard compliance
CE marking: Yes
Thiele - small parameters
BL factor (BL): 26.50 T x m
DC resistance (Re): 5.50 ohm
Effective moving mass (Mms): 170 gr
Effettive piston area (Sd): 0.09 m2
Electrical factor (Qes): 0.30 Qes
Equivalent Cas air loaded (Vas): 146 liters
Half-space efficency (Eff): 1.90%
Max. linear excursion (Xmax): 12 mm
Mechanical factor: 7.60 Qms
Resonance frequency (Fs): 34 Hz
Total factor: 0.29 Qts
Voice coil inductance @ 1kHz (Le1k): 1.30 mH
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