RCF LF18N405 High-Power Neodymium Woofer - 18"

The RCF LF18N405 is a high-performance 18" woofer designed for extended low-frequency reproduction with minimal distortion and high SPL. Featuring a 4-inch inside/outside copper voice coil, neodymium magnet, and a hypervented magnetic structure, it ensures superior power handling, efficient cooling, and low power compression. The fiber-loaded cone with a triple-roll surround delivers exceptional strength and control, making it ideal for demanding professional audio applications.

Product Specifications:

Nominal Diameter: 18 inch (457 mm)

Impedance: 8 ohms

Program Power: 3000W

Power Handling: 1500W

Sensitivity: 97.5 dB

Frequency Range: 25 - 1000 Hz

Max Excursion Before Damage: 58 mm (2.28 in)

Voice Coil Diameter: 4 inch (102 mm)

Voice Coil Material: Copper

Magnet Type: Neodymium

Surround Design: Triple-roll polycotton

Cone Design: Fiber-loaded curved cone

Cooling System: Hypervented magnetic structure

Thiele-Small Parameters

Resonance Frequency (Fs): 30 Hz

DC Resistance (Re): 4.9 ohm

Mechanical Q (Qms): 7.00

Electrical Q (Qes): 0.34

Total Q (Qts): 0.32

BL Factor: 26.5 T·m

Effective Moving Mass (Mms): 261 g

Equivalent Compliance (Vas): 227 liters

Max Linear Excursion (Xmax): 14 mm

Voice Coil Inductance (Le1k): 1.70 mH

Mounting Information

Overall Diameter: 465 mm (18.31 in)

Bolt Circle Diameter: 442-447 mm (17.4-17.6 in)

Front Mount Cut-out: 424 mm (16.69 in)

Rear Mount Cut-out: 425 mm (16.73 in)

Volume Occupied by Driver: 5.5 liters (0.22 ft³)

Dimensions & Weight

Height: 208 mm (8.19 in)

Weight: 8.8 kg (19.4 lbs)

Shipping Information

Package Dimensions: 495 x 525 x 255 mm

Package Weight: 10 kg (22.05 lbs)