Operating Instructions - Cambridge Audio 540A User Manual

OPERATING INSTRUCTIONS

Note: S S ome f f eatures m m ay n n ot a a pply t t o a a ll m m odels. R R efer t t o t t he d d iagram o o n
your a a ccompanying O O wners' C C ertificate.
P P o o w w e e r r
This control switches the mains power to the amplifier ON and OFF.
B B a a s s s s & & T T r r e e b b l l e e
These controls allow subtle adjustments to the tonal balance of the sound.
In the central position these controls have no effect. These controls only
modify the sound through your loudspeakers and the PRE-OUT sockets
(where featured), they do not affect the signals sent through the TAPE OUT
connections. With a well produced CD and a good system the tone controls
are unnecessary and can be switched out. If the musical recording is of poor
quality and/or the loudspeakers/surroundings are lacking it may be
necessary to adjust the tone controls to compensate.
D D i i r r e e c c t t
This control gives the audio signal a more direct path to the power amplifier
stage of your amplifier, bypassing the tone control circuits for the purest
possible sound quality.
V V o o l l u u m m e e
This control adjusts the overall volume of the sound for both left and right
loudspeakers and the PRE-OUT sockets (where featured). It has no effect on
the level of the signals fed to the TAPE OUT connections to your tape/MD
recorder. On some models the volume can also be controlled using the
supplied, or optional, remote control unit. It i i s a a dvisable t t o t t urn t t he V V OLUME
control f f ully a a nti-c c lockwise b b efore s s witching t t he a a mplifier o o n.
B B a a l l a a n n c c e e
This control allows you to adjust the relative output levels of the left and right
channels. In the central position the output from each channel is equal. This
control only modifies the sound through your loudspeakers and the PRE-OUT
sockets (where featured), it does not affect the signals sent through the TAPE
OUT connections to your tape/MD recorder.
R R e e m m o o t t e e s s e e n n s s o o r r
This sensor receives the infra-red signals from the remote control unit.
I I n n p p u u t t s s e e l l e e c c t t o o r r
Rotate the input selector switch to select the source component that you
wish to listen to. The signal selected is also fed to the TAPE OUT sockets so
that it may be recorded.
T T a a p p e e / / M M D D M M o o n n i i t t o o r r
This control lets you listen to the output signal from a tape recorder or signal
processor connected to the amplifier's TAPE IN sockets. When TAPE/MD
MONITOR is selected, the source component chosen by the INPUT SELECTOR
continues to be routed to the TAPE OUT sockets for recording or processing.
CONNECTING
When designing our amplifiers we have tried to include features that allow
you to connect your system in various ways. The inclusion of features such as
PRE-OUT and bi-wire loudspeaker sockets mean that you can configure your
system depending on your requirements. The diagrams over the next few
pages are designed to make connection easy.
B B i i -w w i i r r i i n n g g
If your loudspeakers are equipped with two sets of terminals, then it is
possible to connect them in the bi-wire configuration (see figures 3 & 5). Bi-
wiring sends the bass and treble frequencies down separate speaker cables,
resulting in a clearer, more focussed sound.
B B i i -a a m m p p i i n n g g
If your amplifier is equipped with PRE-OUT sockets and your loudspeakers
have two sets of terminals then it is possible to bi-amp your system using a
further power amplifier (see figures 4, 6 & 7). Bi-amping uses two amplifiers
to drive the bass and treble units in the loudspeakers independently,
resulting in even greater clarity coupled with improved control and dynamics.
Amplifiers
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