– The RCF LF18G400 is a very powerful 18″ woofer that handles a 1,000 watts AES, 2,000 watts program power
– Features a triple roll for extra stability, a large 4″ voice coil & a high xmax of 9.0mm
– Very deep rich low frequency down to 25hz
– 2 aluminum demodulation rings above and below the t-yoke ensures less distortion at low frequencies as well as greater excursion
– This model is preferred for thx and high fidelity applications and all very low distortion high power subwoofer systems for concert, theater, etc.
– Nominal Basket Diameter: 18″
– Impedance: 8 ohms
– AES Power Rating: 1,000 Watts
– Program Power: 2,000 Watts
– Frequency Response: 25Hz – 2.0kHz
– Sensitivity (1W/1m): 97.5dB
– Voice Coil Diameter: 4″ / 100mm
– Max. Excursion Before Damage: 2″ / 50mm
– Voice Coil Winding Depth: 1.0″ / 25m
– Cone Material: Carbon Fiber
– Overall Diameter: 18.3″ / 465mm
– Bolt Circle Diameter: 17.4-17.6″ / 442-447mm
– Baffle Cutout Diameter: 16.7″ / 424mm
– No. Of Mounting Holes: 8
– Mounting Hole Diameter: 0.3″ / 6.5mm
– Flange Thickness: 0.6″ / 14mm
– Overall Depth: 8.3″ / 210mm
– Volume Displaced By Driver: 7 Liters / .2ft^3
– Net Weight: 13.3 kg. / 29.3 lbs.
– Shipping Weight: 14.3 kg. / 31.5 lbs.
– THIELE-SMALL PARAMETERS:
– Resonant Frequency (fs): 28 Hz
– Impedance (Re): 5.1 ohms
– Coil Inductance (Le): 2.5mH
– Electromagnetic Q (Qes): 0.29
– Mechanical Q (Qms): 4.6
– Total Q (Qts): 0.27
– Diaphragm Mass (Mms): 190 grams
– Compliance Equivalent Vol. (Vas): 360 Liters/12.71cu. ft.
– Surface Area of Cone (Sd): 0.122 square meters
– Voice Coil Overhang (Xmax): 9.0mm
– BL Factor: 24.2T-M
– Reference Efficiency: 2.63%