Description
The RCF L18P400 is a robust 18-inch ceramic woofer engineered for precision low-frequency performance and extreme reliability in professional subwoofer systems. It features a 4-inch inside/outside copper voice coil, triple-roll surround, and corrugated straight cone for low distortion and high excursion. Designed with an aluminum demodulation ring and advanced T-pole geometry, the L18P400 minimizes flux modulation and ensures smooth, controlled movement even at maximum excursion.
Product Specifications:
Nominal Diameter: 18"
Rated Impedance: 8 ohm
Program Power: 2000 W
Power Handling (AES): 1000 W
Sensitivity: 97.5 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: 0.98"
Magnet Type: Ceramic
BL Factor: 24.60 T·m
Inductance (1 kHz): 1.20 mH
Demodulation Ring: Yes (Aluminum)
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): 29 Hz
DC Resistance (Re): 5.10 ohm
Qms: 7.60
Qes: 0.29
Qts: 0.28
Mms: 200 g
Vas: 340 L
Sd: 0.120 m²
Efficiency (Half-space): 2.63%
Mounting Information
Overall Diameter: 18.31"
Baffle Cut-out (Front): 16.69"
Baffle Cut-out (Rear): 16.73"
Bolt Circle Diameter: 17.4–17.6"
Bolt Hole Diameter: 0.28"
Volume Occupied by Driver: 0.24 ft³
Depth (Height): 8.11"
Dimensions & Weight
Height: 8.11"
Diameter: 18.31"
Weight: 29.76 lbs
Shipping Info
Package (H x W x D): 10.63" x 20.47" x 19.69"
Shipping Weight: 34.17 lbs
Financing Options
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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.