Be He ard, Not Seen
P S B C u s t o m S o u n d I n - Wa l l S u b w o o f e r/A m p l i f i e r
For custom installations specifying in-wall subwoofers, PSB
engineered the CustomSound CWS8. Evaluating the in-wall
environment, PSB developed a subwoofer design that works well
with the limited volume each wall presents and the typically less-
than-rigid wall construction. It features high excursion, high power
handling dual eight-inch woofers with woven fi berglass cones for the
output levels that movie lovers demand. “Dog leg” style mounting
clips insure quick and easy mounting. The CWS8 subwoofer shares
its mounting frame and dimensions with the PSB companion model
CW383 8” 3-way in-wall system. As such they create ideal partners
for the ultimate in full range in-wall sound reproduction.
The CWS8 employs carefully engineered driver mass and
motor-strength to “take the wall out of the equation,” delivering
astonishingly powerful but controlled deep bass from a four-inch-
deep in-wall, for prodigious extension without stress or distortion,
preserving the low-end “slam” critical to high-end home-theater bass.
The CWA-1 power amplifi er was designed for use with the
CustomSound Series CWS8 and other passive subwoofers. The
CWA-1 is a shelf mountable amplifi er, stable down to 2 ohms, with
continuous power output of 300 watts. The CWA-1 features a full
complement of subwoofer controls, such as variable low pass fi lter,
phase switching, low frequency level, two different EQ/extension
settings and a high pass output. The 2-position EQ will allow the
CWA-1 to suit the CWS8 and other future custom subwoofers, both
large and small. A unique feature of the CWA-1 is the parametric
equalizer, which can be customized to correct undesirable
resonances of the typical listening room. Full adjustment for
bandwidth, center frequency and equalizer boost or cut is provided.
Custom installers will appreciate the selectable music and voltage
sensor triggering, input and output triggers plus built-in, automatic
resetting overdrive current protection circuitry.
CWS8 - Dual 8” Passive In-Wall Speaker System
CWA-1 Subwoofer Amplifi er/Equalizer
17"
432mm
18.25"
464mm
4"
102mm
11"
280mm
9.75"
248mm
• Two Platinum-derived woofers with stiff fi berglass cones,
higher cone mass and enhanced motor strength for
powerful and controlled bass response
• Fully enclosed back box and new construction bracket
(NCB) available
Frequency Range (-6dB): 33-200Hz
Recommended Power: 40-200 Watts
Impedance: 4 Ohms
Sensitivity (1W (2.83V) @1m)
Anechoic Chamber: 88dB SPL
Typical Listening Room: 90dB SPL
Drivers: 2 x 8” Woofers
Overall Dimensions (W x H x D): 11 x 18 1/4 x 4”
Cut-out Dimensions (W x H): 9 3/4 x 17”
CWS8 - Dual 8” Passive In-Wall Speaker System
w w w. p s b s p e a k e r s . c o m
1 8 8 8 7 7 2 0 0 0 0
• System optimized when mounted closest to fl oor level.
• System optimized when mounted closest to fl oor level.
• If mounted in same wall cavity as upper range speaker
• If mounted in same wall cavity as upper range speaker
then a partition header or back box is desirable.
• Changing the volume of the deep wall cavity behind
• Changing the volume of the deep wall cavity behind
the speaker and the position of the speakers within the
the speaker and the position of the speakers within the
room will have an effect on bass level and frequency
room will have an effect on bass level and frequency
response.
• Make small exploratory hole and check for
obstructions in wall cavity before cutting mounting
obstructions in wall cavity before cutting mounting
hole.
• Mounting template provided.
• Lightly fi ll wall cavity with fi berglass 2 feet above and
• Lightly fi ll wall cavity with fi berglass 2 feet above and
below system. Use standard 4” fi berglass split to half
below system. Use standard 4” fi berglass split to half
thickness.
• Adjust electric screwdrivers to appropriate torque.
• Adjust electric screwdrivers to appropriate torque.
Tighten mounting screws fi rmly but do not over tighten!
Tighten mounting screws fi rmly but do not over tighten!
• Use crossover point, phase switch and other controls
• Use crossover point, phase switch and other controls
to achieve best blend with main system. Set bass to
to achieve best blend with main system. Set bass to
realistic level. (consult manual)
• See manual for more installation hints.
Installation Notes
• 300 Watts Continuous Power
• Controls for Level, Low Pass Frequency and Phase
• 2 EQ/extension positions for current and future subs
• 3 Control Parametric Equalizer
• Music or voltage sensor triggering
• Shelf mounting
• 17” x 12 5/8” x 3 3/4” (W x D x H)
CWA-1 Subwoofer Amplifi er/Equalizer
PSB Speakers reserves the right to change specifications or features without notice.
© 2004 PSB Speakers, a division of Lenbrook Industries Limited.
PSB is a registered trademark of Lenbrook Industries Limited. Printed in Canada 10/04. All rights reserved.
No part of this publication may be reproduced, stored or transmitted in any form whatsoever without the written permission of PSB Speakers.
To Reach US Customer Service dial 1 888 772 0000 ext 4445 or 4342
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