There are, however, some extremely
sensitive televisions – some that even have
to be adjusted according to their alignment
with the earth’s magnetic field. If you have
a problem, first degauss the television set
with the speaker in place. Some have a
button especially for this purpose. If not,
switch off the set at the mains for
15 minutes and switch on again. Merely
putting the set into standby mode is not
sufficient.
If you still have a problem, try moving the
speaker either forwards or backwards a
little to get a more favourable juxtaposition,
or space the speaker further from the
television until the distortion disappears.
Because of the higher stray magnetic field
in front of the speaker, we recommend you
keep magnetically sensitive articles
(computer discs, audio and video tapes,
swipe cards and the like) at least 0.2m from
the speaker.
Connections
All connections should be made with the
equipment switched off.
There are 2 pairs of terminals at the back of
the speaker which permit bi-wiring if
desired. On delivery, the separate pairs are
connected together with high-quality links
for use with a single 2-core cable. For
single cable connection, leave the links in
place and use either pair of terminals on
the speaker. (figure 6)
Ensure the positive terminal on the speaker
(marked + and coloured red) is connected
to the positive output terminal of the
amplifier and negative (marked – and
coloured black) to negative. Incorrect
connection can result in poor imaging and
loss of bass.
To bi-wire, remove the links by loosening
the terminal caps and use a separate
2-core cable from the amplifier to each pair
of terminals. (figure 7) This can improve the
resolution of low-level detail. Observe the
correct polarity as before. When bi-wiring,
incorrect connection can also impair the
frequency response.
The terminals accept 6mm (
1
/
4
-in) spades,
bared wire ends or round pins up to 6mm
diameter and 4mm banana plugs. When
using spades, fit them under the sliding
collar.
Important safety notice:
In certain countries, notably those in
Europe, the use of 4mm banana plugs is
considered a potential safety hazard,
because they may be inserted into the
holes of unshuttered mains supply sockets.
In order to comply with European
CENELEC safety regulations, the 4mm
holes in the ends of the terminals are
blocked by plastic pins. Do not remove the
pins if you are using the product where
these conditions apply.
Always screw the terminal caps down
tightly to optimise the connection and
prevent rattles.
Ask your dealer for advice when choosing
cable. Keep the total impedance below the
maximum recommended in the
specification and use a low inductance
cable to avoid attenuation of the highest
frequencies.
Fine tuning
All Applications
Before fine tuning, double check that all the
connections in the installation are correct
and secure.
The inertness of the support used can
affect the sound quality of the speaker. For
best results, mount the speakers on firm
dedicated stands. Bookshelf mounting is
possible but allows less opportunity for
optimising the sound. Ask your dealer for
advice on the best type for your needs.
Moving the speakers further from the walls
will reduce the general level of bass. Space
behind the speakers also helps to create an
impression of depth. Conversely, moving
the speakers closer to the walls will
increase the level of bass. If you want to
reduce the bass without moving the
speakers further from the wall, fit the foam
plugs in the port tubes. (figure 8)
If the bass is uneven with frequency it is
usually due to the excitation of resonance
modes in the room. Even small changes in
the position of the speakers or the listeners
can have a profound effect on how these
resonances affect the sound. Try mounting
the speakers along a different wall. Even
moving large pieces of furniture can have
an effect.
If the sound is too harsh, increase the
amount of soft furnishing in the room (for
example use heavier curtains), or reduce it
if the sound is dull and lifeless.
Test for flutter echoes by clapping your
hands and listening for rapid repetitions.
Reduce them by the use of irregular
shaped surfaces such as bookshelves and
large pieces of furniture.
Home Theatre
Refer to your decoder manual and set the
levels and delay times for all the speakers.
Check the settings to obtain the best
average result at all probable listening
positions. Except for special effects, the
general level of the surround field should
not be too obvious.
Adjust the spacing of the front left and right
speakers so that the size of the acoustic
image matches the size of the screen.
Adjust the toe-in of the front left and right
speakers to get a smooth transition of
sounds that pan from one side to the other.
Adjust the angle of the surround speakers
to give the best results with a variety of
material. Use both movies and music
videos.
2-Channel Audio
If the central image is poor, try moving the
speakers closer together and adjusting the
degree of toe-in. (figure 9)
Aftercare
The cabinet surface usually only requires
dusting. If you wish to use an aerosol
cleaner, remove the grille first by gently
pulling it away from the cabinet. Spray onto
the cleaning cloth, not directly onto the
cabinet. The grille fabric may be cleaned
with a normal clothes brush whilst the grille
is detached from the cabinet.
Avoid touching the drive unit diaphragms,
especially the tweeter, as damage may
result.
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