Before You Begin - Arcam AVR850 Handbook

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
before you processing with high-performance audio and video
components to bring you an unrivalled home-
begin...
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/
AVR850
audio signals. Control of the AVR850/AVR550/SR250 is The AVR850/AVR550/SR250 receivers are designed
either by front panel control buttons, IR remote control, to produce a level of performance that will truly bring
IP (Ethernet) control or RS232 port. music and movies to life.
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.
E-6
Placing the unit Power
< Place the unit on a level, firm surface, avoiding The amplifier is supplied with a moulded mains plug
direct sunlight and sources of heat or damp.
already fitted to the lead. Check that the plug supplied
< Do not place the AVR850/AVR550/SR250 on top of fits your supply – should you require a new mains lead,
a power amplifier or other source of heat. please contact your Arcam dealer.
< Do not place the amplifier in an enclosed space such
If your mains supply voltage or mains plug is different,
as a bookcase or closed cabinet unless there is good
please contact your Arcam dealer immediately.
provision for ventilation. The AVR850/AVR550/
The AVR850/AVR550/SR250 can be switched for
SR250 will run warm during normal operation.
operation between 220–240V (switch position 230V)
Do not place any other component or item on top
<
and 110–120V (switch position 115V).
of the amplifier as this may obstruct airflow around
the heat-sink, causing the amplifier to run hot. (The
NOTE
unit placed on top of the amplifier would become
Ensure that the AVR850/AVR550/SR250 is switched
hot, too.)
off and the power lead removed before changing the
Make sure the remote-control receiver on the front
<
position of the voltage range switch.
panel display is unobstructed, otherwise this will
impair the use of the remote-control. If line-of-sight
Push the IEC plug end of the power cable into the
is impractical, a remote-control repeater can be used
socket on the back of the amplifier, making sure that it
with the rear panel connector (see page E-14).
is pushed in firmly. Plug the other end of the cable into
Do not place your record deck on top of this
<
your mains socket and, if necessary, switch the socket
unit. Record decks are very sensitive to the noise
on.
generated by mains power supplies which will be
heard as a background 'hum' if the record deck is The AVR850/AVR550/SR250 can be turned on using
the switch on the front panel. While switched on,
too close. POWER
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 Radio interference
We recommend the use of high-quality screened cables The AVR850/AVR550/SR250 is an audio device
that are designed for the particular application. Other containing microprocessors and other digital
cables will have different impedance characteristics electronics. Each model has been designed to very high
that will degrade the performance of your system (for standards of electromagnetic compatibility.
example, do not use cabling intended for video use to
This is a Class A product. In a domestic environment
carry audio signals). All cables should be kept as short as
this product may cause radio interference, in which case
is practically possible.
the user may be required to take adequate measures.
It is good practice when connecting your equipment to
If the AVR850/AVR550/SR250 causes interference to
make sure that the mains power-supply cabling is kept
radio or television reception (which can be determined
as far away as possible from your audio cables. Failure to
by switching the AVR850/AVR550/SR250 off and on),
do so may result in unwanted noise in the audio signals.
the following measures should be taken:
For information on speaker cabling, please refer to the
< Re-orient the receiving antenna or route the antenna
'Speakers' section, beginning on page E-15.
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.
E-7