RCF LF18G401 High-Sensitivity Woofer with Deep Bass Extension - 18"

The RCF LF18G401 is a high-performance 18-inch ceramic woofer built for smooth frequency response and powerful low-end performance in demanding sound reinforcement applications. It features a 4-inch copper voice coil, triple-roll surround, and polycotton suspension for maximum excursion and durability. With a 98 dB sensitivity and 1800W program power handling, the LF18G401 delivers punchy, tight bass with impressive efficiency.

Product Specifications:

Nominal Diameter: 18"

Rated Impedance: 8 ohm

Program Power: 1800 W

Power Handling (AES): 900 W

Sensitivity: 98 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: 0.91"

Magnet Type: Ceramic

BL Factor: 24.60 T·m

Inductance (1 kHz): 1.80 mH

Mechanical

Cone: Straight fiber-loaded

Surround: Triple-roll polycotton

Max Excursion (Before Damage): 1.97"

Xmax (Linear Excursion): 9 mm

Spider: Triple (3x)

Thiele-Small Parameters

Resonance Frequency (Fs): 33 Hz

DC Resistance (Re): 4.80 ohm

Qms: 7.60

Qes: 0.30

Qts: 0.29

Mms: 182 g

Vas: 268 L

Sd: 0.120 m²

Efficiency (Half-space): 3.09%

Mounting Information

Overall Diameter: 18.31"

Baffle Cut-out (Front & Rear): 16.69"

Bolt Circle Diameter: 17.4–17.6"

Bolt Hole Diameter: 0.28"

Volume Occupied by Driver: 0.24 ft³

Depth (Height): 7.72"

Dimensions & Weight

Height: 7.72"

Diameter: 18.31"

Weight: 28.66 lbs

Shipping Info

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

Shipping Weight: 33.07 lbs