RCF LF18N451 8/ohm

Speaker 18", 1500W, 97.5dB, 30-1000Hz

The LF18N451 is a high-power handling and efficient transducer designed to deliver powerful and precise sub-bass frequencies with minimal distortion and power compression.
It boasts ultra-fast time response, utilizing a fiber-loaded cone assembly with a large triple roll surround for exceptional strength and control.
Equipped with a double silicon spider system for excellent control during large excursions, and a fully optimized T-pole design to minimize flux modulation.
The dual-forced air venting system ensures efficient voice coil ventilation to reduce power compression.

Features:

• 4.5-inch Inside/Outside copper voice coil
• 3000 Watt continuous program power handling
• 97.5 dB Sensitivity
• 30 Hz - 1 kHz Frequency range
• Dual-forced air ventilation for minimum power compression
• Dual spider design with silicon-based damping control
• BL of 30.2 Txm for faster and accurate low frequency response


General Specifications:

• Nominal Diameter: 460/18 mm/inch
• Rated Impedance: 8 ohm
• Program Power: 3000 W AES
• Power handling capacity: 1500 W AES
• Sensitivity: 97.5 dB
• Frequency Range: 30 Hz ÷ 1000 Hz
• Effective Piston Diameter: 395 / 15.6 mm/inch
• Max Excursion Before Damage (peak to peak): 60/2.36 mm/inch
• Minimum Impedance: 6.3 ohm
• Voice Coil Diameter: 115 / 4.5 mm/inch
• Voice Coil Material: Copper
• Voice Coil Winding Depth: 26 / 1.02 mm/inch
• Number of layers: 2 Kind of layer: inside / outside
• Top Plate Thickness: 15 / 0.6 mm/inch
• Cone Material: No pressed pulp
• Cone Design: Curved
• Surround Material: Polycotton
• Surround Design: Triple roll


Thiele/Small Parameters:

• DC resistance: 5.0ohm
• Mechanical factor: 6.0
• Electrical factor: 0.25
• Total factor: 0.24
• BL Factor: 30.2 T · m
• Effective Moving Mass: 235 g
• Equivalent Cas air load: 245 liters
• Effective piston area: 0.122 m2
• Max. linear excursion (mathematical): 8.8 mm
• Voice-coil inductance @ 1kHz: 2.6 mH
• Half-space efficiency: 2.54%


Mounting Information:

• Overall Diameter: 465 / 18.3 mm/inch
• Bolt Circle Diameter: 442-447 / 17.4-17.6 mm/inch
• Bolt Hole Diameter: 6.5 / 0.25 mm/inch
• Front Mount Baffle Cut-out: 424/16.7 mm/inch
• Rear Mount Baffle Cut-out: 424 / 16.7 mm/inch
• Depth: 205 / 8.1 mm/inch Volume occupied by the driver: 5.5/0.19 liters/ft3
• Net Weight: 10.6 / 23.3 kg/lbs


Shipping Information:

• Shipping weight: 11.8 / 26 kg/lbs