E-7
E-6
English
The AVR850/AVR550/SR250 receivers are designed
to produce a level of performance that will truly bring
music and movies to life.
The AVR850, AVR550 and SR250 are high-quality
and high-performance home-cinema processors
and amplifiers built to Arcam’s quality design and
manufacturing standards. They combine digital
processing with high-performance audio and video
components to bring you an unrivalled home-
entertainment centre.
The AVR850/AVR550/SR250 allows switching and
control of seven analogue and six digital audio sources
in addition to internal FM and DAB radios – as well as
networked and USB audio sources – making any of the
models an ideal hub for both home-cinema and two-
channel stereo systems.
Since many of these source components are also capable
of generating video signals, the AVR850/AVR550/SR250
includes broadcast-quality switching for HDMI video/
audio signals. Control of the AVR850/AVR550/SR250 is
either by front panel control buttons, IR remote control,
IP (Ethernet) control or RS232 port.
The remote control supplied with the AVR850/AVR550/
SR250 is a multi-device ‘universal’ learning remote
control which is simple to use, and once set up is able
to control a complete system. It can be programmed
using its vast internal code library to control CD and BD
players, PVRs, TVs and other devices.
The installation of the AVR850/AVR550/SR250 in a
listening room is an important process which requires
care at every stage. For this reason, the installation
information is very comprehensive and should be
followed carefully to achieve an unrivalled level of
performance.
before you
begin…
AVR850
Placing the unit
<
Place the unit on a level, firm surface, avoiding
direct sunlight and sources of heat or damp.
<
Do not place the AVR850/AVR550/SR250 on top of
a power amplifier or other source of heat.
<
Do not place the amplifier in an enclosed space such
as a bookcase or closed cabinet unless there is good
provision for ventilation. The AVR850/AVR550/
SR250 will run warm during normal operation.
<
Do not place any other component or item on 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 on 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 E-14).
<
Do not place your record deck on top of this
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.
The AVR850/AVR550/SR250 can be switched for
operation between 220–240V (switch position 230V)
and 110–120V (switch position 115V).
NOTE
Ensure that the AVR850/AVR550/SR250 is switched
off and the power lead removed before changing the
position of the voltage range switch.
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.
The AVR850/AVR550/SR250 can be turned on using
the
POWER
switch on the front panel. While switched on,
the front panel LED will glow green.
Standby power
The AVR850/AVR550/SR250 can be switched into
standby mode using the
2
button on the CR450 remote
control. While in standby mode the front panel LED
will glow red and power consumption is less than
0.5 Watts.
While in Standby mode, 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 to save power.
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.
For information on speaker cabling, please refer to the
‘Speakers’ section, beginning on page E-15.
Radio interference
The AVR850/AVR550/SR250 is an audio device
containing microprocessors and other digital
electronics. Each model has been designed to very high
standards of electromagnetic compatibility.
This is a Class A product. In a domestic environment
this product may cause radio interference, in which case
the user may be required to take adequate measures.
If the AVR850/AVR550/SR250 causes interference to
radio or television reception (which can be determined
by switching the AVR850/AVR550/SR250 off and on),
the following measures should be taken:
<
Re-orient the receiving antenna or route the antenna
cable of the affected receiver as far as possible from
AVR850/AVR550/SR250 and its cabling.
<
Relocate the receiver with respect to the AVR850/
AVR550/SR250.
<
Connect the affected device and the AVR850/
AVR550/SR250 to different mains outlets.
If the problem persists, please contact your Arcam
dealer.
Summary of Contents for AVR550
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