RCF LF18G401 bassoelementti

RCF LF18G401 bassoelementti

The LF18G401 is a 18-inch woofer with linear frequency response cheracteristics and very high power handling. The LF18G401 uses a fibre loaded cone assembly along with a high excursion triple roll, constant geometry surround. This combination provides remarkable strength and peak to peak maximum excursion of 50mm.

Features
- 4-inch, fiberglass inside/outside copper voice coil
- 1800W continuous program power handling
- 98 dB Sensitivity
- 30 Hz – 1 kHz Frequency range
- Dual spider design with silicon based dampening control
- Triple-roll surround and corrugated straight cone geometry

General Specifications
Nominal Diameter: 18 inch / 457 mm
Rated Impedance: 8 ohm
Program Power (watt): 1800 W
Power handling capacity: 900 W
Sensitivity: 98.0 dB
Frequency range: 30 - 1000 Hz
Effective piston diameter: 395 mm / 15.55 inch
Max. Excursion Before Damage: 50 mm / 1.97 inch
Minimum Impedance (ohm): 5.9 ohm
Voice Coil Diameter: 4.0 inch / 102 mm
Voice Coil Winding Material: Copper
Voice Coil Length: 23 mm / 0.91 inch
Number of layers: 2
Kind of layers: inside/outside
Top Plate Thickness: 12 mm / 0.47 inch
Cone Design: Straight
Surround Material: Polycotton
Surround Design: Triple roll
Magnets: Ceramic
Spider: Dual with silicon based damping control

Thiele - Small Parameters
Resonance frequency (Fs): 33 Hz
DC resistance (Re) (ohm): 4.80 ohm
Mechanical factor: 7.60 Qms
Electrical factor: 0.30 Qes
Total factor: 0.29 Qts
Bl factor (Bl) (T x m): 24.60 T x m
Effective moving mass (Mms): 182.0 g
Equivalent Cas air loaded (Vas): 268.0 liters
Effective piston area (Sd): 0.120 m2
Max. linear excursion (Xmax): 9 mm
Voice coil inductance @ 1kHz (Le1k): 1.80 mH
Half-space efficency (Eff): 3.09%

Mounting Informations
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: 424 mm / 16.69 inch
Volume occupied by the driver: 6 liters / 0.24 ft3

Standard Compliance
CE marking: Yes

Size
Height: 196 mm / 7.72 inches
Diameter: 465 mm / 18.31 inches
Weight: 13 kg / 28.66 lbs