RCF LF18N408 High-Efficiency Neodymium Woofer - 18"

The RCF LF18N408 is a high-output 18-inch woofer engineered for deep, accurate bass and powerful SPL performance. Equipped with a 4-inch copper voice coil and neodymium magnet, it handles up to 3000W of continuous program power. The hypervented magnetic structure, aluminum demodulation rings, and curved cone design reduce power compression and distortion while enhancing transient response. Designed for subwoofer and high-end bass applications in touring systems or professional installs.

Product Specifications:

Nominal Diameter: 18"

Rated Impedance: 8 ohm

Program Power: 3000 W

Power Handling (AES): 1500 W

Sensitivity: 97.0 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: 1.5"

Magnet Type: Neodymium

BL Factor: 25.70 T·m

Inductance (1 kHz): 1.56 mH

Demodulation Rings: 2 (Aluminum)

Mechanical

Cone: Curved, fiber-loaded

Surround: Triple-roll polycotton

Max Excursion (Before Damage): 2.28"

Xmax (Linear Excursion): 0.59"

Spider: Single heavy-cloth spider

Thiele-Small Parameters

Resonance Frequency (Fs): 30 Hz

DC Resistance (Re): 4.30 ohm

Qms: 3.60

Qes: 0.36

Qts: 0.33

Mms: 284 g

Vas: 193 L

Sd: 0.122 m²

Efficiency (Half-space): 1.57%

Mounting Information (Inches)

Overall Diameter: 18.31"

Baffle Cut-out (Front): 16.69"

Baffle Cut-out (Rear): 16.73"

Bolt Hole Diameter: 0.28"

Depth (Height): 8.8"

Volume Occupied by Driver: 0.22 ft³

Dimensions & Weight

Height: 8.8"

Diameter: 18.31"

Weight: 19.84 lbs

Shipping Info

Package (H x W x D): 10.63" x 20.47" x 19.49"

Shipping Weight: 22.49 lbs