Specifications
Nominal Diameter
Nominal Impedance
Minumum Impedance
Power Handling
460 mm (18 in)
8 Ω
6.2 Ω
(40 –400 Hz)
Nominal1
700 W
1400 W
96.5 dB
Continuous Program2
Sensitivity (1W/1m)3
Frequency Range
Voice Coil Diameter
Winding Material
Former Material
30-2000 Hz
100 mm (4 in)
Copper
Glass Fibre
21 mm (13/16 in)
8 mm (9/16 in)
1.1 T
Winding Depth
Magnetic Gap Depth
Flux Density
Also available in 4 Ω, data upon request
4
Thiele & Small Parameters
Fs
28 Hz
Re
5.3 Ω
Qes
Qms
Qts
Vas
Sd
η0
0.33
7.6
0.31
386 dm3 (13.6 ft3)
1134 cm2 (175.8 in2)
2.4%
X max
X Var
Mms
Bl
6 mm
5 mm
153 g
18 PS 46 | Woofer
20.8 T·m
2.4 mH
Le
Long excursion 18" woofer with 1400W power handling for subwoofer
applications where reproduction of the lowest frequencies is mandatory.
A special 4" voice coil using proprietary high temperature adhesives and
an optimized magnet assembly guarantee robust LF output, low power
compression and a very low distortion figure. A bass-reflex enclosure is
recommended for best performance.
Mounting and Shipping Information
Overall Diameter
Bolt Circle Diameter
Baffle Cutout Diameter
Depth
Flange and Gasket Thickness
Net Weight
460 mm (18 in)
440 mm (17.3 in)
422 mm (16.6 in)
191 mm (7.5 in)
16 mm (5/8 in)
10.3 kg (22.7 lb)
12.1 kg (26.6 lb)
520x520x240 mm
(20.5x20.5x9.4 in)
Shipping Weight
Shipping Box
1 2 hours test made with continuous pink noise signal (6 dB crest factor) within the
specified range. Power calculated on rated minimum impedance. Loudspeaker in
free air.
2 Power on Continuous Program is defined as 3 dB greater than the Nominal rating.
3 Applied RMS Voltage is set to 2.83V for 8 ohms Nominal Impedance. Average
SPL from 200 to 2000Hz.
4 Thiele-Small parameters are measured after a high level 20 Hz sine wave precon-
ditioning test.
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