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APPLICATION:
• Ideal for high output, high power subwoofers, with band pass or port loaded enclosure designs.
18NPW
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DRAWING PDF
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FERRITE WOOFER
Ordering code: 18NPW-017
CONT. POWER
SENS.
Fs
Freq. Range
VC Dia.
IN-OUT WOUND
VC Wire
Cone /
Surround
Magnet
Type
2,400 WATTS
98 dB
36 Hz
25-
1,500 Hz
4"
IN-OUT
COPPER
PAPER w. CF
FABRIC
NEO
The 18NPW is a high efficiency, (98 dB 1watt / 1 meter) 18-inch woofer with incredibly linear frequency response characteristics, extreme high power handling capability while generating low harmonic distortion artifacts. The 18NPW uses a lightweight, but strong, carbon fiber loaded cone assembly along with a high excursion triple roll constant geometry surround. This combination provides remarkable strength, high efficiency and a peak to peak maximum excursion of 50mm (2in).
Power Handling
At the core of the 18NPW is it’s voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures in excess of 350°C, well beyond the thermal requirements of modern professional audio systems. The 18NPW delivers incredible performance.
REDCATT has implemented a double layer/silicone spider design to ensure long term Fs memory, consistency and diminish anomalies associated with spider deterioration. The sealed spider works as a air pump and pushes the air trough out motor to increase heat transfer and cooling of the parts.
GENERAL SPECIFICATIONS:
Nominal Diameter
460 mm (18 in.)
Rated Impedance
8 ohm
Power Handling
AES Power
1,200 watts
PROGRAM Power
2,400 watts
PEAK Power
7,000 watts
Power Compression
@ -10dB
0.7 dB
@ 0dB
1.5 dB
@ Max. Power
2.2 dB
Max. Recommended X-OVER Freq.
1,000 Hz
Recommended Enclosure Volume
150 - 350 Liters
Cone Design / Cone Material
Strght. Gmtry, REDCATT Pulp
Voice Coil Diameter / Winding
4"
Voice coil Winding Height
23.7 mm
Front Plate Thickness
14 mm
T/S Parameters:
Fs
36 Hz
Re
5.35 Ohm
Sd
1256 cm2 (194 in.2)
Qms
9.5
Qes
0.34
Qts
0.33
Vas
212 Liters
Mms
199 g
Bl product (Force Factor)
27.7 Tm
Peak To Peak Displacement
24 mm
Le (mH @ 1kHz)
1.6
Mechanical Parameters:
Overall Diameter
467.9 mm (18.42 in.)
No. Of Mounting Holes
8
Bolt Circle Diameter
442 mm (17.4 in.)
Front Mount Baffle cutout
428 mm (16.85 in.) Nominal
Rear Mount Baffle cutout
430 mm (16.92 in.) Nominal
Total Depth
214 mm (8.42 in.)
Flange and gasket thickness
22 mm (0.86 in.)
Packaging info:
Net Weight
9.1 kg (20.1 lbs.)
Shipping Weight
10.2 kg (22.5 lbs.)
Packaging Dimensions
485x485x260cm