RCF - Woofer/L18P200N

The L18P200 is the RCF classical extended low frequency 18” woofer. Generous voice coil length, heavier moving mass weight and very low resonance for perfect low frequency reproduction. Remarkable the linearity in the application range. Special treatments are applied to cone surface and surround for optimum dampening.

Applications
The L18P200N finds its best application in bass reflex enclosures. It is a perfect solution for recorded music, cinema subwoofers, very low frequency monitoring and applications where very low frequency linearity is required.

4-inch, Kapton former copper voice coil
1600 Watt continuous program power handling
96 dB Sensitivity
27 Hz – 1 kHz Frequency range
Triple roll damped surround
Corrugated straight damped cone

GENERAL SPECIFICATIONS
Nominal Diameter 460/18 mm/inch
Rated Impedance 8 Ohm
Program Power 1600 Watts
Power handling capacity 800 Watts
Sensitivity 95 dB
Frequency Range 27-1000 Hz
Effective Piston Diameter 380/15 mm/inch
Maximum Excursion Before Damage (peak to peak) 36/1.4 mm/inch
Minimum Impedance 7.5 Ohm
Voice Coil Diameter 100/4 mm/inch
Voice Coil Material Copper
Voice Coil Winding Depth 24/0.9 mm/inch
Number of layers 2
Kind of layer Outside
Top Plate Thickness 9/0.35 mm/inch
Cone Material No pressed pulp treat
Cone Design Straight
Surround Material Polycotton treat
Surround Design Triple roll

THIELE – SMALL PARAMETERS
Resonance frequency Fs 28 Hz
DC resistance Re 6.3 Ohm
Mechanical factor Qms 7.1
Electrical factor Qes 0.32
Total factor Qts 0.31
BL factor BL 23.1 T – m
Effective Moving Mass Mms 155 gr
Equivalent Cas air load Vas 380 liters
Effective piston area Sd 0.113 m2
Max. linear excursion (mathematical) Xmax 9.8 mm
Voice – coil inductance @ 1kHz Le1k 2.2 mH
Half-space efficiency Eff 2.51 %

MOUNTING INFORMATION
Overall Diameter 470/18.5 mm/inch
Bolt Circle Diameter 438 mm
Bolt Hole Diameter 8/0.3 mm/inch
Front Mount Baffle Cut-out 416/16.4 mm/inch
Rear Mount Baffle Cut-out 418/16.5 mm/inch
Depth 180/7.1 mm/inch
Volume occupied by the driver 6.2 liters/ft3

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