RCF L18P400

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

The L18P400 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 reachees its maximum excursion limits.Forced air venting system.

18" Leistung: 1000W RMS, 2000W Programmleistung Schalldruck SPL 1W/1m: 97.5dB Freq. Range 25-1000 Hz

Features

* 4-inch, fiberglass inside/outside copper voice coil
* 2000W continuous program power handling
* 97.5 dB Sensitivity
* 25 Hz – 1 kHz Frequency range
* Aluminum demodulation ring
* Forced air ventilation and 15mm 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 Ω
* 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: 6.5 Ω
* 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: 15 / 0.6 mm/inch
* Cone Material: No pressed pulp
* Cone Design: Straight
* Surround Material: Polycotton
* Surround Design: Triple roll

Thiele/Small Parameters

* Resonance frequency: 29 Hz
* DC resistance: 5.1Ω
* Mechanical factor: 7.6
* Electrical factor: 0.29
* Total factor: 0.28
* BL Factor: 24.6 T · m
* Effective Moving Mass: 200 g
* Equivalent Cas air load: 340 liters
* Effettive piston area: 0.122 m²
* Max. linear excursion (mathematical): 8.8 mm
* Voice - coil inductance @ 1kHz: 2.5 mH
* Half-space efficiency: 2.63%

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: 6.0 / 0.21 liters/ft³
* Net Weight: 13.3 / 29.3 kg/lbs

Shipping information

* Shipping weight: 14.3 / 31.5 kg/lbs