Description
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
Financing Options
Hassle-Free Financing Available
Get the gear you need now and pay over time. Perfect for working DJs, artists, and sound pros who need pro-grade speakers, lighting, and cases to stay competitive.
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- Acima, Synchrony, Progressive & Snap lease-to-own and financing options
- Fast approvals so you buy today and pay monthly
Military & First Responder Discounts
We're proud to support those who serve. Active-duty military, veterans, and first responders qualify for a special discount on your gear. See our Military Discount details here and how to redeem.