English Owner's Manual - Bowers & Wilkins CT8.4 LCRS Owner's Manual

English
Owner's manual
Dear customer,
Thank you for choosing Bowers & Wilkins. Please read
this manual fully before unpacking and installing the
product. It will help you to optimise its performance.
B&W maintains a network of dedicated distributors in
over 60 countries who will be able to help you should
you have any problems your dealer cannot resolve.
Environmental Information
All B&W products are designed to comply
with international directives on the
Restriction of Hazardous Substances
(RoHS) in electrical and electronic equipment and the
disposal of Waste Electrical and Electronic Equipment
(WEEE). These symbols indicate compliance and that
the products must be appropriately recycled or
processed in accordance with these directives. Consult
your local waste disposal authority for guidance.
Carton Contents
Check in the carton for:
1 Speakon plug
1 Wall mount bracket (3 parts)
2 Foot brackets
4 M6 bolts
Speaker Installation
The CT8.4 LCRS speaker is intended for use in home
theatre front, centre and surround channel
applications. More specifically it can also be used as
the surround speaker option for the CT800 system
when space constraints prohibit the use of the
CT8 DS. The speaker can be wall mounted in either
vertical or horizontal orientation, or floor mounted
vertically with midrange driver uppermost, using one
of the accessory brackets supplied.
To use the wall bracket attach its two shorter elements
to the speaker using the tapped holes in its back
panel and the four supplied M6 bolts. Attach the
longer bracket element to the wall in the appropriate
position. Once the two bracket elements are securely
attached the speaker can be hung on the wall.
Figure 2 illustrates use of the wall bracket. Before
using the bracket ensure that the wall and fixings are
capable of supporting the weight of the speaker.
The foot bracket is designed to stop the speaker
toppling forward if it is stood on a shelf or other flat
supporting structure. The foot brackets attach to the
back of the CT8.4s using two of the M6 threaded
holes otherwise used to attach the wall mount
brackets. Using two of the M6 bolts supplied securely
attach the foot brackets to the CT8.4 back panels.
The brackets should be secured such that their flat
section rests on the floor. The single slotted hole can
then be used to attach the bracket to the structure of
the floor. Use an appropriate screw and a plug if
necessary. Figure 3 Illustrates use of the foot bracket.
2
Regardless of the style of installation take care when
lifting the speaker into position. It is unwieldy and heavy
and best handled by two people working together. B&W
can accept no liability for any failure of walls, floors
and/or fixings.
A black fabric grille is attached via push-fit pegs.
Speaker Positioning
CT8.4 LCRS series speakers used for the front
channels in a home theatre system should be
positioned one either side of the screen on the
horizontal centre-line. They should be within
approximately 0.5m (20 in) of the sides of the screen
to help keep the sound image in scale with the visual
image. See Figure 1.
A CT8.4 LCRS series speaker used for the centre
channel in a home theatre system should be
positioned centrally either directly above or below the
screen. In the case of acoustically transparent
screens, the centre channel speaker should be
positioned centrally behind the screen. See Figure 1.
CT8.4 LCRS series speakers used for the surround
channels in a home theatre system should be
positioned above and to either side or behind the
listening position. See Figure 1.
Stray Magnetic Fields
The speaker drive units create stray magnetic fields
that extend beyond the boundaries of the cabinet. We
recommend you keep magnetically sensitive articles
(CRT television and computer screens, computer
discs, audio and video tapes, swipe cards and the
like) at least 0.5m (20 in) from the speaker. LCD and
plasma screens are not affected by magnetic fields.
Connections
All connections should be made with the equipment
switched off.
CT8.4 LCRS series speakers have two pairs of binding
post connection terminals and one Neutrik
connection socket on their back panels. The binding
post terminals provide quick and easy connection of
stripped wires while Speakon sockets provide a more
secure and reliable connection method. Both Speakon
and binding post terminal connection methods provide
the opportunity to bi-wire the speakers.
To connect the speakers in conventional single-wire
mode using the Speakon option, insert a short length of
stripped cable through the body of each binding post
terminal and tighten the terminal head then disassemble
the Speakon plug as shown in Figure 4a and connect
the positive cable to the terminal marked +1 and the
negative cable to the terminal marked -1. Incorrect
connection can result in poor imaging and loss of bass.
Once the plug is reassembled it can be inserted into the
socket and locked by twisting clockwise.
To connect the speakers in conventional single-wire
mode using the binding post terminals, insert a short
length of stripped cable through the body of each
terminal and tighten the terminal head. Connect the
positive cable to one of the red terminals and the
negative cable to the corresponding black terminal as
® Speakon