• THE RCF L18P400 IS THE NEW IMPROVED VERSION OF THE L18P300 18" SUBWOOFER
• HANDLES 1,000 WATTS AES, 2,000 WATTS PROGRAM POWER HANDLING
• FEATURES A STRONG CARBON FIBER CONE FOR INCREASED DURABILITY
• 4" FIBERGLASS INSIDE/OUTSIDE COPPER VOICE COIL, DUAL SPIDER, FORCED AIR VENTILATION & TRIPLE ROLL SURROUND FOR HIGH EXCURSION
• AWESOME FOR SUBWOOFER SYSTEMS & EXTENDED XMAX OF 9MM
• THE RCF L18P400 IS DESIGNED TO WORK WELL IN PORTED CABINETS & BASS HORN LOADED CABINETS OF THE HIGHEST QUALITY

WOOFER MODEL	L18P400
SPECIFICATIONS
Nominal Basket Diameter	18"
Impedance	8 ohms
AES Power Rating	1,000 Watts
Program Power	2,000 Watts
Frequency Response	25Hz - 1.0kHz
Sensitivity (1W/1m)	97.5dB
Voice Coil Diameter	4" / 100mm
Max. Excursion Before Damage	2" / 50mm
Max. Crossover Frequency	150Hz
Voice Coil Winding Depth	1" / 25mm
Number Of Layers	2
CABINET SPECIFICATIONS
Enclosure Volume	200Liters/7.06cu. ft.
Tuning Frequency	33Hz
Vent Diameter	200mm/7.9"
Vent Depth	280mm/11.03"
MATERIALS
Cone Material	Carbon Fiber - No Pressed Pulp
Voice Coil Material	Copper
Diaphragm Material	Paper Pulp
Surround Material	Polycotton
Surround Design	Triple Roll
MOUNTING INFORMATION
Overall Diameter	18.3" / 465mm
Bolt Circle Diameter	17.4 to 17.6" / 442 to 447mm
Baffle Cutout Diameter	16.7" / 424mm
No. Of Mounting Holes	8
Mounting Hole Diameter	0.3" / 6.5mm
Flange Thickness	.55" / 14mm
Overall Depth	8.3" / 210mm
Volume Displaced By Driver	7 Liters / .25ft^3
Net Weight	13.3 kg. / 29.3 lbs.
Shipping Weight	14.3 kg. / 31.5 lbs.
THIELE-SMALL PARAMETERS
Resonant Frequency (fs)	28 Hz
Impedance (Re)	5.1 ohms
Coil Inductance (Le)	2.5mH
Electromagnetic Q (Qes)	.29
Mechanical Q (Qms)	4.6
Total Q (Qts)	.27
BL Factor	24.2T-M
Compliance Equivalent Vol. (Vas)	360 Liters/12.71cu. ft.
Voice Coil Overhang (Xmax)	9mm
Reference Efficiency	2.63%
Low Frequency Response
Frequency response curve of the loudspeaker taken in a hemispherical, free field environment and mounted in a closed box with an internal volume of 600 liters (21.2 cu. ft.) enclosing the rear of the driver
Dimensional Drawing

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