RCF LF18G400

​FEATURES
4-inch, fiberglass inside/outside copper voice coil
2000W continuous program power handling
97.5 dB Sensitivity
25 Hz – 1 kHz Frequency range
T-pole, curved on top. 14mm top plate for minimum power compression
Dual spider design with silicon based dampening control
Triple-roll surround and corrugated straight cone geometry
GENERAL SPECIFICATIONS
Nominal Diameter:460 / 18 mm/inch
Rated Impedance:8 Ω
Program Power:2000 W AES
Power handling capacity:1000 W AES
Sensitivity:97.5 dB
Frequency Range:25 Hz ÷ 1000 Hz
Effective Piston Diameter:395 / 15.6 mm/inch
Max Excursion Before Damage (peak to peak):50 / 2.0 mm/inch
Minimum Impedance:6.0 Ω
Voice Coil Diameter:100 / 4 mm/inch
Voice Coil Material:Copper
Voice Coil Winding Depth:25 / 1.0 mm/inch
Number of layers:2
Kind of layer:Inside / outside
Top Plate Thickness:14 / 0.55 mm/inch
Cone Material:No pressed pulp
Cone Design:Straight
Surround Material:Polycotton
Surround Design:Triple roll
THIELE/SMALL PARAMETERS
DC resistance:5.1Ω
Mechanical factor:4.6
Electrical factor:0.29
Total factor:0.27
BL Factor:24.2 T · m
Effective Moving Mass:190 g
Equivalent Cas air load:360 liters
Effettive piston area:0.122 m²
Max. linear excursion (mathematical):9.0 mm
Voice - coil inductance @ 1kHz:2.5 mH
Half-space efficiency:2.63%
MOUNTING INFORMATION
Overall Diameter:465 / 18.3 mm/inch
Bolt Circle Diameter:442-447 / 17.4-17.6 mm/inch
Bolt Hole Diameter:6.5 / 0.3 mm/inch
Front Mount Baffle Cut-out:424 / 16.7 mm/inch
Rear Mount Baffle Cut-out:424 / 16.7 mm/inch
Depth:210 / 8.3 mm/inch
Volume occupied by the driver:7.0 / 0.25 liters/ft³
Net Weight:13.3 / 29.3 kg/lbs
SHIPPING INFORMATION
Shipping weight:14.3 / 31.5 kg/lbs