RCF L18P400 Low Frequency Transducer / Woofer

SKU
L18P400
$449.00

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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 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 reaches its maximum excursion limits. Forced air venting system.

The L18P400 is ideal for use in applications where incredible power handling, long excursion and perfect control is required. Ideal for high quality professional bass reflex and bass-horn systems. The transducer's low frequency extension, coupled with its extremely low generation of harmonic distortion, also makes it ideal for use within critical listening applications such as studio monitoring subwoofer systems.

RCF L18P400 Low Frequency Transducer / Woofer Features:

  • 4-inch, fiberglass inside-outside copper voice coil.
  • 2000 Watt continuous program power handling.
  • 97.5 dB Sensitivity.
  • 25 Hz - 1 kHz Frequency range.
  • Aluminum demodulation ring.
  • 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.

RCF L18P400 Specifications:
General
Nominal Diameter: 460/18 mm/inch
Rated Impedance: 8 ohm
Program Power: 2000 watts
Power handling capacity: 1000 watts
Sensitivity: 97.5 dB
Frequency Range: 25 - 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 ohm
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: Fs 29 Hz
DC resistance: Re 5.1 ohm
Mechanical factor: Qms 7.6
Electrical factor: Qes 0.29
Total factor: Qts 0.28
BL Factor: BL 24.6 T.m
Effective Moving Mass: Mms 200 gr
Equivalent Cas air load: Vas 340 liters
Effettive piston area: Sd 0.122 m2
Max. linear excursion (mathematical): Xmax 8.8 mm
Voice - coil inductance @ 1KHz: Le 1.2 mH
Half-space efficiency: Eff 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: 425/16.7 mm/inch
Depth: 188/7.40 mm/inch
Volume occupied by the driver: 6.0/0.21 liters/ft3

Shipping Information
Net Weight: 13.3/29.3 Kg/Lbs
Shipping Weight: 14.3/31.5 Kg/Lbs

Each L18P400 Retail Box Includes:
(1) RCF L18P400 Low Frequency Transducer / Woofer

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