Description
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)
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