RCF LF18X401 Ceramic Woofer with High-Power Handling - 18"

The RCF LF18X401 is a rugged, high-power 18-inch ceramic magnet woofer built to deliver uncompromising performance at extreme sound pressure levels. Featuring a 4-inch inside/outside copper voice coil, triple-roll surround, and a straight corrugated cone, it achieves very low distortion, linear response, and extended low-frequency reproduction. The advanced Dual Forced Hyperventing System ensures optimal cooling and power compression control, making it ideal for demanding subwoofer applications.

Product Specifications:

Nominal Diameter: 18"

Rated Impedance: 8 ohm

Program Power: 3000 W

Power Handling (AES): 1500 W

Sensitivity: 97.5 dB

Frequency Range: 25 Hz – 1 kHz

Voice Coil & Motor

Voice Coil Diameter: 4"

Voice Coil Material: Copper

Coil Type: Inside/outside, 2 layers

Coil Length: 1.18"

Magnet Type: Ceramic

BL Factor: 26.50 T·m

Inductance (1 kHz): 0.83 mH

Mechanical

Cone: Straight fiber-loaded

Surround: Triple-roll polycotton

Max Excursion (Before Damage): 1.97"

Xmax (Linear Excursion): 12 mm

Spider: Triple (3x)

Thiele-Small Parameters

Resonance Frequency (Fs): 30 Hz

DC Resistance (Re): 5.40 ohm

Qms: 7.40

Qes: 0.31

Qts: 0.30

Mms: 215 g

Vas: 274 L

Sd: 0.120 m²

Efficiency (Half-space): 2.30%

Mounting Information

Overall Diameter: 18.31"

Baffle Cut-out (Front): 16.69"

Baffle Cut-out (Rear): 16.73"

Bolt Circle Diameter: 17.4–17.6"

Bolt Hole Diameter: 0.28"

Volume Occupied by Driver: 0.26 ft³

Depth (Height): 7.72"

Dimensions & Weight

Height: 7.72"

Diameter: 18.31"

Weight: 27.56 lbs

Shipping Info

Package (H x W x D): 10" x 20.63" x 19.45"

Shipping Weight: 33.07 lbs