RCF LF18N401 - 2400W 18-inch Neodymium Low-Frequency Driver with 4-inch Voice Coil and 8-Ohm Impedance in Black Finish

The RCF LF18N401 is an 18-inch neodymium low-frequency driver designed for professional audio applications that demand high power handling and efficiency. With a continuous power handling capacity of 2400W, the LF18N401 is engineered to provide deep, powerful bass frequencies with minimal distortion, low power compression, and extremely high SPLs. The combination of a fibre-loaded cone assembly and a high excursion triple-roll surround delivers remarkable strength and control, even during large excursions. This driver is perfect for subwoofer applications where both accuracy and power handling are critical.

The LF18N401 features a 4-inch fiberglass inside-outside copper voice coil, which enhances power handling and improves transient response. A dual-forced air ventilation system ensures efficient cooling of the voice coil, minimizing power compression during high-output performance. The driver's dual spider system, designed with silicon-based damping control, ensures excellent excursion control while preventing distortion. The 15 mm top plate and fully optimized T-pole design reduce flux modulation, improving harmonic and intermodulation distortions while enhancing transient response and overall performance.

With a frequency range extending from 30 Hz to 1000 Hz, the LF18N401 delivers an impressive low-end response while maintaining clarity and precision in the mid-bass frequencies. The driver's sensitivity of 98 dB ensures efficient sound reproduction, and the 9 mm maximum linear excursion contributes to the LF18N401's ability to produce deep, controlled bass. The neodymium magnet structure ensures that the driver is both powerful and lightweight, making it ideal for high-performance subwoofer systems where both power and portability are important.

Features

• 2400W continuous program power handling for powerful subwoofer performance
• 4-inch fiberglass inside-outside copper voice coil for superior power handling and improved transient response
• 98 dB sensitivity for effective sound reproduction in demanding environments
• 30 Hz to 1000 Hz frequency range for deep and accurate low-frequency response
• Peak-to-peak excursion of 52 mm for exceptional bass extension
• Dual-forced air ventilation system for efficient cooling and minimized power compression
• Triple-roll polycotton surround for excellent control during large excursions
• BL factor of 27.8 T x m for faster and more accurate low-frequency reproduction
• Neodymium magnet structure for high power-to-weight ratio and improved efficiency
• Resonance frequency of 32 Hz and maximum linear excursion of 9 mm for deep, controlled bass response
• CE compliant for safety and reliability in professional installations

Specifications

General Specifications

• Nominal Diameter: 18 inch / 457 mm
• Rated Impedance: 8 ohm
• Program Power (watt): 2400 W
• Power handling capacity: 1200 W
• Sensitivity: 98.0 dB
• Frequency range: 30 - 1000 Hz
• Effective piston diameter: 395 mm / 15.55 inch
• Max. Excursion Before Damage: 52 mm / 2.05 inch
• Minimum Impedance (ohm): 6.3 ohm
• Voice Coil Diameter: 4.0 inch / 102 mm
• Voice Coil Winding Material: Copper
• Voice Coil Length: 25 mm / 0.98 inch
• Number of layers: 2
• Kind of layers: inside/outside
• Top Plate Thickness: 15 mm / 0.59 inch
• Cone Design: Straight
• Surround Material: Polycotton
• Surround Design: Triple roll
• Magnets: Neodymium
• Dual-force air ventilation: Yes
• Spider: 02

Thiele (small parameters)

• Resonance frequency (Fs): 32 Hz
• DC resistance (Re) (ohm): 5.10 ohm
• Mechanical factor: 6.50 Qms
• Electrical factor: 0.27 Qes
• Total factor: 0.26 Qts
• Bl factor (Bl) (T x m): 27.80 T x m
• Effective moving mass (Mms): 201.0 g
• Equivalent Cas air loaded (Vas): 257.0 liters
• Effective piston area (Sd): 0.120 m2
• Max. linear excursion (Xmax): 9 mm
• Voice coil inductance @ 1kHz (Le1k): 2.50 mH
• Half-space efficency (Eff): 3.01%

Mounting Information

• Overall diameter: 465 mm / 18.31 inches
• Bolt circle diameter: 442-447 mm / 17.4-17.6 inch
• Bolt hole diameter: 7 mm / 0.28 inch
• Front mount baffle cut-out: 424 mm / 16.69 inch
• Rear mount baffle cut-out: 424 mm / 16.69 inch
• Volume occupied by the driver: 5.5 liters / 0.22 ft3

Standard Compliance

• Safety agency: CE compliant

Size/Weight

• Height: 8.03 inches
• Diameter: 18.31 inches
• Weight: 20.94 lbs

Shipping Information

• Package Height: 10.24 inches
• Package Width: 20.47 inches
• Package Depth: 19.69 inches
• Package Weight: 25.13 lbs