Bowers & Wilkins Casa ACM 65 Quick start guide

ACM™65, ACM™80 Installation notes
Casa
Installation
Series
™

Figure 1
Figure 2

THESE NOTES MUST BE READ IN
CONJUNCTION WITH THE CASA
INSTALLATION MANUAL. A FULL COPY
OF WHICH IS AVAILABLE AT
http://clarity.bwspeakers.com
INTRODUCTION
Thank you for purchasing B&W Active
Ceiling Mount (ACM™) speakers.
Since its foundation in 1966, the
continuing philosophy of B&W has been
the quest for perfect sound reproduction. It
is our policy to make sure the advanced
features pioneered on one product are
incorporated into others we manufacturer.
The ACM™ range incorporates woven
Kevlar®cone mid/bass drive units for
lowest coloration and maximum definition.
However, no matter how good the
speakers themselves, they must work well in
the listening room and time spent on
planning the installation will reap the
reward of many hours listening pleasure.
Please read through this manual fully. It
will help you optimise the performance of
the system.
UNPACKING
(figure 1)
• Fold the top carton flaps right back and
invert the carton and contents.
• Lift the carton clear of the contents.
• Remove the inner packing
from the product.
Check the contents:
• 2 x Frame/baffle with drive unit,
amplifier and swing out dogs
• 2 x Loudspeaker grille
• 1 x Alignment template
• 2 x Paint mask
We suggest you retain the packaging for
future use. Remove the grilles from the
frames and, to avoid damage, keep them
in their plastic bags (and preferably in the
carton) away from the work area until you
are ready to fit them.
POSITIONING –
NEW CONSTRUCTION VERSUS
RETROFIT
Check that there is no conflict with other
ceiling installations (pipe work, air
conditioning, power-cabling etc.).
In existing construction, use a stud-finding
tool to map the area accurately and a pipe
detector to scan the proposed installation
position. Avoid installing the speakers in
the same cavity of the ceiling as flimsy
ducting, which may be induced to rattle.
The speakers are designed to operate
satisfactorily in a wide range of cavity
volumes, ideally above 15 litres (0.5 cu ft).
The speakers are balanced for half-space
mounting (i.e. flush in a ceiling or soffit).
Placement near a wall/ceiling junction or
in a corner is to be avoided as it may give
rise to too much bass and a boomy quality
to the sound. If possible, keep the
speakers more than 0.5m (20in) from the
ceiling edges.
The following sections give guidance on
optimum positioning, but this may be
modified in line with domestic constraints.
Normal Ceiling Applications
For distributed sound, mount the
loudspeakers in the ceiling. The spacing
will depend on the height of the ceiling
and the level of sound required. More
speakers played at a lower volume will
give better clarity.
Warning: the ACM™ speakers produce a
static magnetic field that extends outside
the speaker boundary. As such they should
not be placed within 0.5m (20in) of
equipment that may be affected by such a
field, e.g Cathode Ray Tubes in TVs and
Personal Computers.
DAMPING THE CAVITY
Loosely fill the whole section of the ceiling
cavity with wadding. Fibreglass and
mineral wool matting supplied for heat
insulation are suitable, but not closed cell
foam or expanded polystyrene. Check
there is no debris that may fall into the
speaker (especially in ceiling mount
situations).
IMPORTANT: YOU SHOULD CHECK THAT
THE INSTALLATION ITSELF AND THE
MATERIALS YOU USE MEET THE LOCAL
FIRE AND BUILDING REGULATIONS.
FITTING THE FRAME
New Construction
Fit the separately available pre-mount kit
(PMKc65 for ACM™ 65, PMKc80 for
ACM™ 80.) to the studding before the
drywall panels are fitted, following the
instructions supplied with the kit. The
drywall panels should be fitted up to the
pre-mount frame and plastered over.
Existing Construction
Push out the slots in the template provided.
Position the template on the ceiling as
required. Mark along the inside edges of
the slots and cut out the aperture neatly.
All Methods
(figure 2)
Position the frame in the ceiling and screw
in the 4 screws visible from the front of the
frame. These screws swing out clamping
dogs that locate behind the drywall.
Ensure that they have located properly and
tighten the screws. A certain amount of
flexing of the frame is allowed to take up
the unevenness in the mounting surface, but
do not over tighten the screws as excessive
distortion of the frame may occur.
CUSTOMISING
The frame and grille have paintable white
semi-matte finish, ready if necessary to be
refinished to match you own decor. Fit the
paint mask before re-finishing. Do not
refinish the drive units or baffle area
behind the grille. Avoid touching the drive
units, as damage may result.

Description
Drive units
Amplifier power
Frequency range
Frequency response
Crossover frequency
Input
Frame diameter
Cut-out size
without pre mount
Cut-out size
with pre mount
Min depth req
Net weight
Standby power
Additional capabilities
Kevlar is a registered trademark of DuPont. E & OE.
B&W Loudspeakers Ltd. reserves the right to amend details of the specification without notice in line with technical developments.
Copyright © B&W Loudspeakers Ltd. Printed in Taiwan.
B&W Loudspeakers Ltd, Meadow Road, Worthing, BN11 2RX Tel: [phone] Fax: [phone]
B&W Loudspeakers of America, 54 Concord Street, North Reading, MA 01864-2699, USA
Tel: (1978) 664 2870 Fax: (1978) 664 4109
http://www.bwspeakers.com
ACM™65
2-way coaxial ceiling mount active
speaker system
1x 165mm (6.5 in) Kevlar® mid/bass
1x 25mm (1in) metal dome high-
frequency
25W
-6db at 50Hz and 30kHz
55Hz - 20kHz ± 3dB on reference axis
3.5kHz
Balanced 3.5V RMS sensitivity 500k
impedance
232mm (9.1in)
206mm (8.1in)
213mm (8.4in)
95mm (3.8in) from ceiling surface
0.6kg
+/- 24v active, +/-12V standby
less than 1.0W
Mono from stereo capability
ACM™80
2-way coaxial ceiling mount active
speaker system
1x 200mm (8in) Kevlar® mid/bass
1x 25mm (1in) metal dome high-
frequency
30W
-6db at 36Hz and 30kHz
40Hz - 20kHz ± 3db on reference axis
3.5kHz
Balanced at 3.5V RMS sensitivity 500k
impedance
280mm (11in)
254mm (10in)
261mm (10.3in)
100mm (4in) from ceiling surface
1.9kg
+/- 24V active, +/- 12V standby Less
than 1.0w
Local input, subzone capability