RCF LF18N451 High-Power Neodymium Woofer - 18"

The RCF LF18N451 is a premium 18-inch subwoofer engineered for ultra-fast low-frequency reproduction with minimal distortion and exceptional efficiency. Equipped with a 4.5-inch inside/outside copper voice coil and fiber-loaded cone, it delivers powerful sub-bass and high power handling. The dual silicone spider design with triple-roll surround ensures precise excursion control, while the advanced dual-forced air ventilation system keeps power compression to a minimum—ideal for high-performance professional audio systems.

Product Specifications:

Nominal Diameter: 18"

Rated Impedance: 8 ohm

Program Power: 3000 W

Power Handling (AES): 1500 W

Sensitivity: 97.5 dB

Frequency Range: 30 Hz – 1 kHz

Voice Coil & Motor

Voice Coil Diameter: 4.5"

Voice Coil Material: Copper

Voice Coil Length: 1.02"

Winding Type: Inside/Outside, 2 layers

Top Plate Thickness: 0.59"

Magnet: Neodymium

BL Factor: 30.20 T·m

Inductance (1 kHz): 2.60 mH

Mechanical

Cone: Curved, fiber-loaded

Surround: Triple-roll polycotton

Max Excursion (Before Damage): 2.36"

Xmax (Linear Excursion): 0.35"

Dual Silicone Spider System: Yes

Thiele-Small Parameters

Resonance Frequency (Fs): 31 Hz

DC Resistance (Re): 5.00 ohm

Qms: 6.00

Qes: 0.25

Qts: 0.24

Moving Mass (Mms): 235 g

Vas: 245 L

Sd: 0.120 m²

Efficiency (Half-space): 2.54%

Mounting Information (Inches)

Overall Diameter: 18.31"

Bolt Circle Diameter: 17.4–17.6"

Bolt Hole Diameter: 0.28"

Baffle Cut-out (Front): 16.69"

Baffle Cut-out (Rear): 16.73"

Driver Depth (Height): 8.78"

Volume Occupied by Driver: 0.22 ft³

Dimensions & Weight

Height: 8.78"

Diameter: 18.31"

Weight: 23.15 lbs

Shipping Info

Package (H x W x D): 9.45" x 20.08" x 18.9"

Shipping Weight: 27.56 lbs