The RCF LF18N401 is a premium 18-inch neodymium woofer engineered for deep, controlled bass, exceptional sensitivity, and superior power handling. Designed for high-performance audio systems, it features a 4-inch copper voice coil with a dual spider structure, triple-roll surround, and dual-forced ventilation for minimal power compression. With 2400W program power and 98 dB sensitivity, it delivers impressive SPL output with precision and reliability.

Product Specifications:

Nominal Diameter: 18″

Rated Impedance: 8 ohm

Program Power: 2400 W

Power Handling (AES): 1200 W

Sensitivity: 98.0 dB

Frequency Range: 30 Hz 1 kHz

Voice Coil & Motor

Voice Coil Diameter: 4″

Voice Coil Material: Copper

Coil Type: Inside/outside, 2 layers

Coil Length: 0.98″

Magnet Type: Neodymium

BL Factor: 27.80 Tm

Inductance (1 kHz): 2.50 mH

Mechanical

Cone: Straight fiber-loaded

Surround: Triple-roll polycotton

Max Excursion (Before Damage): 2.05″

Xmax (Linear Excursion): 9 mm

Spider: Dual silicone-damped

Thiele-Small Parameters

Resonance Frequency (Fs): 32 Hz

DC Resistance (Re): 5.10 ohm

Qms: 6.50

Qes: 0.27

Qts: 0.26

Mms: 201 g

Vas: 257 L

Sd: 0.120 m

Efficiency (Half-space): 3.01%

Mounting Information

Overall Diameter: 18.31″

Baffle Cut-out (Front/Rear): 16.69″

Bolt Circle Diameter: 17.417.6″

Bolt Hole Diameter: 0.28″

Volume Occupied by Driver: 0.22 ft

Depth (Height): 8.03″

Dimensions & Weight

Height: 8.03″

Diameter: 18.31″

Weight: 20.94 lbs

Shipping Info

Package (H x W x D): 10.24″ x 20.47″ x 19.69″

Shipping Weight: 25.13 lbs