RCF LF18N451 Woofer 18" 8 ohm 3000W

Description:

The LF18N451 is a high-performance 18" low-frequency transducer engineered for demanding subwoofer applications requiring high output, efficiency, and precision. Designed to deliver powerful and accurate sub-bass frequencies, it is ideal for touring systems, large-scale PA setups, and professional installations where low distortion and minimal power compression are critical.

Featuring a 4.5" inside/outside copper voice coil, the driver is optimised for high excursion and improved linearity at low frequencies. The fibre-loaded cone, combined with a large triple-roll surround and dual spider system with silicon-based damping, ensures excellent mechanical stability and control even under extreme operating conditions.

Advanced engineering includes a neodymium magnet structure, optimised T-pole design to reduce flux modulation, and a dual-forced air ventilation system for efficient cooling. This results in fast transient response, reduced distortion, and consistent performance during high-power operation.

Features:

Type: 18" High-Power Subwoofer Driver

Power Handling: 1500W RMS / 3000W Program
Sensitivity: 97.5 dB

Voice Coil: 4.5" Copper Voice Coil (Inside/Outside Winding)
Cone: Fibre-Loaded Cone Assembly
Surround: Triple-Roll Polycotton Surround

Design: Dual Spider with Silicon-Based Damping
Cooling: Dual-Forced Air Ventilation

Magnet: Neodymium
BL Factor: 30.2 Tm for Fast and Accurate Low Frequencies

Performance: High Excursion Design with Low Distortion
Application: Subwoofers, touring systems, and large-scale PA

Specifications:

Nominal Diameter: 18" (457mm)
Impedance: 8Ω
Minimum Impedance: 6.3Ω

Frequency Response: 30Hz – 1000Hz
Resonance Frequency (Fs): 31Hz

Voice Coil Diameter: 114mm
Voice Coil Length: 26mm

Sensitivity: 97.5 dB
BL Factor: 30.20 Tm

Xmax: 9mm
Max Excursion (Peak-to-Peak): 60mm

Effective Piston Diameter: 395mm
Effective Piston Area (Sd): 0.120 m²

Mounting Diameter: 465mm
Bolt Circle Diameter: 442–447mm
Cut-Out (Front): 424mm
Cut-Out (Rear): 425mm

Depth: 223mm
Weight: 10.5kg

Magnet Type: Neodymium
Surround Material: Polycotton

Compliance: CE