RCF LF18X400

Reproduktor RCF 18", 1000W, 97,5dB, 25-2000Hz, X-max 9,0mm, hmotnost 13,35kg

Incredibly linear frequency response characteristics, extreme high power handling while generating the lowest harmonic distortion of any comparable 18-inch transducer within its application range.

The LF18X400 uses a fibre loaded cone assembly along with a high excursion triple roll, constant geometry surround.

A fully optimised T-pole design generate the minimum amount of flux modulation. The T-pole also features RCF Precision’s spaced gap demodulation technology, progressively braking the voice coil, providing a much smoother transition for the moving mass as it reaches its maximum excursion limits. Forced air venting system.

Features:

• 4-inch, fiberglass inside/outside copper voice coil
• 2000W continuous program power handling
• 97.5 dB Sensitivity
• 25 Hz – 1 kHz Frequency range
• Progressive, spaced, aluminum demodulation rings
• Forced air ventilation and 14 mm top plate for minimum power compression
• Dual spider design with silicon based dampening control
• Triple roll surround and corrugated straight cone geometry

General Specifications:

• Nominal Diameter: 460 / 18 mm/inch
• Rated Impedance: 8 ohm
• Program Power: 2000 W AES
• Power handling capacity: 1000 W AES
• Sensitivity: 97.5 dB
• Frequency Range: 25 Hz ÷ 1000 Hz
• Effective Piston Diameter: 395 / 15.6 mm/inch
• Max Excursion Before Damage (peak to peak): 50 / 2.0 mm/inch
• Minimum Impedance: 6.0 ? Voice Coil Diameter: 100 / 4 mm/inch
• Voice Coil Material: Copper Voice Coil Winding Depth: 25 / 1.0 mm/inch
• Number of layers: 2
• Kind of layer: inside / outside
• Top Plate Thickness: 14/0.55 mm/inch
• Cone Material: No pressed pulp
• Cone Design: Straight
• Surround Material: Polycotton
• Surround Design: Triple roll

Thiele/Small Parameters:

• Resonance frequency: 28 Hz
• DC resistance: 5.1ohm
• Mechanical factor: 6.5
• Electrical factor: 0.29
• Total factor: 0.27
• BL Factor: 25 T · m
• Effective Moving Mass: 192 g
• Equivalent Cas air load: 340 liters
• Effettive piston area: 0.122 m2
• Max. linear excursion (mathematical): 9.0 mm
• Voice - coil inductance @ 1kHz: 2.3 mH
• Half-space efficiency: 2.64%

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: 210/8.3 mm/inch
• Volume occupied by the driver: 7.0/0.25 liters/ft3
• Net Weight: 13.3 / 29.3 kg/lbs

Shipping information: • Shipping weight: 14.3 / 31.5 kg/lbs