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Placing the unit
Place the amplifier on a level, firm surface,
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avoiding direct sunlight and sources of heat or
damp.
Do not place the A28 on top of a power amplifier
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or other source of heat.
Do not place the amplifier in an enclosed space
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such as a bookcase or closed cabinet unless there
is good provision for ventilation. The A28 is
designed to run warm during normal operation.
Do not place any other component or item on
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top of the amplifier as this may obstruct airflow
around the heat-sink, causing the amplifier to
run hot. (The unit placed on top of the amplifier
would become hot, too.)
Make sure the remote-control receiver to the
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right of the front panel display is unobstructed,
otherwise this will impair the use of the remote-
control. If line-of-sight is impractical, a remote-
control repeater can be used with the rear panel
connector (see page 7).
Do not place your record deck on top of this
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unit. Record decks are very sensitive to the noise
generated by mains power supplies which will be
heard as a background 'hum' if the record deck is
too close.
Power
The amplifier is supplied with a moulded mains plug
already fitted to the lead. Check that the plug supplied
fits your supply – should you require a new mains lead,
please contact your Arcam dealer.
If your mains supply voltage or mains plug is different,
please contact your Arcam dealer immediately
Push the IEC plug end of the power cable into the
socket on the back of the amplifier, making sure that it
is pushed in firmly. Plug the other end of the cable into
your mains socket and, if necessary, switch the socket
on.
Stand-by power
For remote stand-by operation, the amplifier's control
power-supply is powered on any time the unit is
connected to the mains supply. The front-panel power-
switch powers all other circuitry down and power
consumption in this mode is less than 2W.
This means that even though the power-switch is off, it
may be possible to hear a slight residual hum coming
from the mains transformer inside the amplifier. This
is perfectly normal. However, if the unit is to be left
unused for an extended period, we recommend that you
disconnect it from the mains supply.
interconnect cables
We recommend the use of high-quality screened cables
that are designed for the particular application. Other
cables will have different impedance characteristics
that will degrade the performance of your system (for
example, do not use cabling intended for video use to
carry audio signals). All cables should be kept as short
as is practically possible.
It is good practice when connecting your equipment to
make sure that the mains power-supply cabling is kept
as far away as possible from your audio cables. Failure to
do so may result in unwanted noise in the audio signals.
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