NEXO (RCF) N1820R4 18" 4 Ohm 1200W rms
Nominal Basket Diameter 18"
Impedance 4 ohms
AES Power Rating 1,000 Watts
Program Power 2,000 Watts
Peak Power 6000 Watts
Frequency Response 35Hz - 1.0kHz
Sensitivity (1W/1m) 97dB
Voice Coil Diameter 3.94" / 100mm
Max. Excursion Before Damage 1.6" / 40mm
Max. Crossover Frequency 150Hz
Voice Coil Winding Depth .9" / 23mm
Number Of Layers 2
MATERIALS
Cone Material Paper Pulp
Voice Coil Material Copper
Diaphragm Material Paper Pulp
Surround Material Polycotton
MOUNTING INFORMATION
Overall Diameter 18.5" / 470mm
Bolt Circle Diameter 17.24" / 438mm
Baffle Cutout Diameter 16.38" / 416mm
No. Of Mounting Holes 8
Mounting Hole Diameter 0.315" / 8mm
Flange Thickness .6" / 15mm
Overall Depth 8.3" / 209mm
Volume Displaced By Driver 6.5 Liters / .2ft^3
Net Weight 14 kg. / 30.8 lbs.
Shipping Weight 14.8 kg. / 32.6 lbs.
THIELE-SMALL PARAMETERS
Resonant Frequency (fs) 33 Hz
Impedance (Re) 5.0 ohms
Coil Inductance (Le) 1.9mH
Electromagnetic Q (Qes) .34
Mechanical Q (Qms) 8.3
Total Q (Qts) .33
Compliance Equivalent Vol. (Vas) 226 Liters/7.98cu. ft.
Voice Coil Overhang (Xmax) 7.8mm
BL Factor 23.5T-M
Reference Efficiency 2.3%
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