RCF LF18N451 - 3000W 18-inch Neodymium Low-Frequency Driver with 4.5-inch Voice Coil and 8-Ohm Impedance in Black Finish

The RCF LF18N451 is a high-performance 18-inch neodymium low-frequency driver engineered to deliver powerful sub-bass frequencies with outstanding efficiency and low distortion. Designed for professional audio applications where clarity and precision are essential, this driver is capable of handling up to 3000W of continuous program power. Its ultra-fast time response ensures accurate low-frequency reproduction, making it ideal for subwoofer applications that demand both power and speed. The LF18N451 features a fiber-loaded cone assembly paired with a large triple-roll surround, which together offer remarkable strength and control during large excursions.

The LF18N451's double silicon spider system guarantees excellent control even during extreme excursions, while its fully optimized T-pole design minimizes flux modulation, allowing for clean and distortion-free performance. The driver also incorporates a dual-forced air venting system, providing efficient voice coil ventilation to reduce power compression and ensure consistent performance over extended periods of use. The 4.5-inch copper voice coil and neodymium magnet structure combine to deliver exceptional power handling while maintaining a lightweight design.

With a frequency range from 30 Hz to 1000 Hz and a sensitivity of 97.5 dB, the LF18N451 offers both deep, powerful bass and precise mid-bass reproduction. Its maximum excursion of 60 mm and a BL factor of 30.2 T x m contribute to faster and more accurate low-frequency response. This driver is designed for use in demanding subwoofer systems, where both high power handling and precise low-end reproduction are required. Whether for large-scale sound reinforcement or high-output installations, the LF18N451 delivers exceptional performance and reliability.

Features

• 3000W continuous program power handling for high-output subwoofer performance
• 4.5-inch inside/outside copper voice coil for superior power handling and efficiency
• 97.5 dB sensitivity for effective sound reproduction
• 30 Hz to 1000 Hz frequency range for versatile low-frequency applications
• Maximum excursion of 60 mm for exceptional bass extension
• Dual-forced air venting system for minimized power compression and efficient cooling
• Triple-roll polycotton surround for excellent control during large excursions
• Neodymium magnet structure for high power-to-weight ratio and improved efficiency
• BL factor of 30.2 T x m for faster and more accurate low-frequency reproduction
• Resonance frequency of 31 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): 3000 W
• Power handling capacity: 1500 W
• Sensitivity: 97.5 dB
• Frequency range: 30 - 1000 Hz
• Effective piston diameter: 395 mm / 15.55 inch
• Max. Excursion Before Damage: 60 mm / 2.36 inch
• Minimum Impedance (ohm): 6.3 ohm
• Voice Coil Diameter: 4.5 inch / 114 mm
• Voice Coil Winding Material: Copper
• Voice Coil Length: 26 mm / 1.02 inch
• Number of layers: 2
• Kind of layers: inside/outside
• Top Plate Thickness: 15 mm / 0.59 inch
• Cone Design: Curved
• Surround Material: Polycotton
• Surround Design: Triple roll
• Magnets: Neodymium
• Dual-force air ventilation: Yes
• Spider: 03

Thiele (small parameters)

• Resonance frequency (Fs): 31 Hz
• DC resistance (Re) (ohm): 5.00 ohm
• Mechanical factor: 6.00 Qms
• Electrical factor: 0.25 Qes
• Total factor: 0.24 Qts
• Bl factor (Bl) (T x m): 30.20 T x m
• Effective moving mass (Mms): 235.0 g
• Equivalent Cas air loaded (Vas): 245.0 liters
• Effective piston area (Sd): 0.120 m2
• Max. linear excursion (Xmax): 9 mm
• Voice coil inductance @ 1kHz (Le1k): 2.60 mH
• Half-space efficency (Eff): 2.54%

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: 425 mm / 16.73 inch
• Volume occupied by the driver: 5.5 liters / 0.22 ft3

Standard Compliance

• Safety agency: CE compliant

Size/Weight

• Height: 8.78 inches
• Diameter: 18.31 inches
• Weight: 23.15 lbs

Shipping Information

• Package Height: 9.45 inches
• Package Width: 20.08 inches
• Package Depth: 18.9 inches
• Package Weight: 27.56 lbs