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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.
CT700 Series speakers have a pair binding post
connection terminals and one Neutrik
®
Speakon
®
connection socket on their rear panels. The binding
post terminals provide quick and easy connection of
stripped wires while the Speakon socket provides a
more secure and reliable connection method.
If the binding post terminals are to be used, connect
the positive cable to the red terminal and the negative
cable to the black terminal. Incorrect connection can
result in poor imaging and loss of bass. Figure 5a
illustrates use of the binding post terminals
If the Speakon
®
option is to be used, disassemble the
Speakon
®
plug as shown in Figure 5b, 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.
Ask your dealer for advice when selecting speaker
cable. Keep its total impedance below the maximum
recommended in the speaker specification and use a
low inductance cable to avoid attenuation of high
frequencies.
Neutrik
®
and the names of Neutrik
®
products
referenced herein are either trademarks and/or service
marks of Neutrik
®
.
Fine Tuning
Before fine tuning, make sure that all the connections
in the installation are correct and secure.
If the bass seems uneven with frequency this will most
probably be due to resonance modes in the listening
room. Even small changes in the listening position can
have a profound effect on how these resonances
affect the sound. Try moving the listening position. The
presence and position of large pieces of furniture can
also influence resonance modes. If you want generally
to reduce the volume of bass fit the foam plugs in the
speakers’ port tubes as illustrated in Figure 6.
If the sound is too bright, increasing the amount of
soft furnishing in the room (heavier curtains for
example) may help balance the sound. Conversely,
reducing the amount of soft furnishing may help
brighten a dull sound.
Some rooms suffer from “flutter echoes” – echoes that
“bounce” between parallel room boundaries. Flutter
echoes can colour the sound of the speakers in the
room. Test for flutter echoes by standing in the middle
of the room and clapping your hands. Flutter echoes
can be reduced by placing irregular shaped items or
non-reflective surfaces, bookshelves, rugs or pictures
for example, on one of the offending walls or floor.
Running-in Period
The performance of the speaker will change subtly
during the initial listening period. If the speaker has
been stored in a cold environment, the damping
compounds and suspension materials of the drive
units will take some time to recover their correct
mechanical properties. The drive unit suspensions will
also loosen up during the first hours of use. The time
taken for the speaker to achieve its intended
performance will vary depending on previous storage
conditions and how it is used. As a guide, allow up to
a week for the temperature effects to stabilise and
15 hours of average use for the mechanical parts to
attain their intended design characteristics.
However, longer run-in periods (as long as a month)
have been reported and there is evidence to suggest
that this has little to do with the speaker changing and
more to do with the listener getting used to the new
sound. This is especially so with highly revealing
speakers such as these where there may be a
significant increase in the amount of detail compared
with what the listener has previously been used to; the
sound may at first appear too “up front” and perhaps
a little hard. After an extended period of time the
sound will seem to mellow, but without losing clarity
and detail.
Aftercare
The cabinet surfaces usually only require dusting. If you
wish to use an aerosol or other cleaner, remove the
grille first by gently pulling it away from the cabinet.
Spray aerosols onto the cleaning cloth, not directly
onto the product. Test a small area first, as some
cleaning products may damage some of the surfaces.
Avoid products that are abrasive, or contain acid, alkali
or anti-bacterial agents. Do not use cleaning agents on
the drive units. The grille fabric may be cleaned with a
normal clothes brush whilst the grille is detached from
the cabinet. Avoid touching the drive units, especially
the tweeter, as damage may result.
Limited Warranty
This product has been designed and manufactured to
the highest quality standards. However, if something
does go wrong with this product, B&W Group Ltd. and
its national distributors warrant free of charge labour
(exclusion may apply) and replacement parts in any
country served by an official B&W distributor.
This limited warranty is valid for a period of five years
from the date of purchase or two years for electronics
including amplified loudspeakers.
Terms and Conditions
1 The warranty is limited to the repair of the
equipment. Neither transportation, nor any other
costs, nor any risk for removal, transportation and
installation of products is covered by this warranty.
3
7105 CT7X IM Inner Iss3.qxd 11/9/08 9:23 am Page 3
6


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