ROTEL RA-1570 - Manual (Page 8)

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RA‑1570 Stereo Integrated Amplifier
Getting Started
Thank you for purchasing the Rotel RA-1570 Stereo Integrated Amplifier.
When used in a high-quality music audio system, it will provide years
of musical enjoyment.
The RA-1570 is a full featured, high performance component. All aspects
of the design have been optimized to retain the full dynamic range and
subtle nuances of your music. The RA-1570 has a highly regulated power
supply incorporating a Rotel custom-designed toroidal power transformer
and custom-made slit foil capacitors. This low impedance power supply has
ample power reserves, which enables the RA-1570 to easily reproduce
the most demanding audio signals. This type of design is more expensive
to manufacture, but it is better for the music.
The printed circuit boards (PCB) are designed with Symmetrical Circuit
Traces. This insures that the precise timing of the music is maintained
and faithfully recreated. The RA-1570 circuitry uses metal film resistors
and polystyrene or polypropylene capacitors in important signal paths.
All aspects of this design have been examined to ensure the most faithful
music reproduction.
The main functions of the RA-1570 are easy to install and use. If you
have experience with other stereo systems, you shouldn’t find anything
perplexing. Simply plug in the associated components and enjoy.
A Few Precautions
WARNING: To avoid potential damage to your system, turn off ALL
the components in the system when connecting or disconnecting the
loudsp-eakers or any associated components. Do not turn the system
components back on until you are sure all the connections are correct
and secure. Pay particular attention to the speaker wires. There must
be no loose strands that could contact the other speaker wires, or
the chassis of the amplifier.
Please read this manual carefully. In addition to basic installation and
operating instructions, it provides valuable information on various RA-1570
system configurations as well as general information that will help you get
optimum performance from your system. Please contact your authorized
Rotel dealer for answers to any questions you might have. In addition,
all of us at Rotel welcome your questions and comments.
Save the RA-1570 shipping carton and all enclosed packing material for
future use. Shipping or moving the RA-1570 in anything other than the
original packing material may result in severe damage to your amplifier.
Fill out and send in the owner’s registration card packed with the RA-1570.
Also be sure to keep the original sales receipt. It is your best record of
the date of purchase, which you will need in the event warranty service
is ever required.
Placement
Like all audio components that handle low-level signals, the RA-1570
can be affected by its environment. Avoid placing the RA-1570 on top
of other components. Also avoid routing audio signal cables near power
cords. This will minimize the chance it will pick up hum or interference.
The RA-1570 generates heat as part of its normal operation. The heat
sinks and ventilation openings in the amplifier are designed to dissipate
this heat. The ventilation slots in the top cover must be open. There should
be 10 cm (4 inches) of clearance around the chassis, and reasonable
airflow through the installation location, to prevent the amplifier from
overheating.
Remember the weight of the amplifier when you select an installation
location. Make sure that the shelf or cabinet can support it. We recommend
installing the RA-1570 in furniture designed to house audio components.
Such furniture is designed to reduce or suppress vibration which can
adversely affect sound quality. Ask your authorized Rotel dealer for advice
about component furniture and proper installation of audio components.
The RA-1570 is supplied with an RR-AX92 remote control and must be
placed where the infrared signal from the remote can reach the front
panel Remote Sensor.
Cables
Be sure to keep the power cords, digital signal cables and regular
audio signal cables in your installation away from each other. This will
minimize the chance of the regular audio signal cables picking up noise
or interference from the power cords or digital cables. Using only high
quality, shielded cables will also help to prevent noise or interference from
degrading the sound quality of your system. If you have any questions
see your authorized Rotel dealer for advice about the best cable to use
with your system.
The RR‑AX92 Remote Control
Some functions can be done with either the front panel controls, or the
supplied RR-AX92 remote control. When these operations are described,
the square call out numbers refer to the main unit, while the encircled
letters refer to the remote control.
NOTE: The remote control can be used to operate the basic functions
of Rotel tuners and CD players. Remote control keys labeled
GHMN
can be used to operate CD or Tuner functions in your system. For the
remote to operate properly, make sure both the remote and the CD
or Tuner are both in same remote code.
Remote Control Batteries
Two UM-4/AAA size batteries (supplied) must be installed before the
remote control can be used. To install the batteries, remove the cover on
the back of the RR-AX92. Install the batteries as shown in the illustration
in the battery well. Test the control for proper operation, then replace
the cover. When the batteries become weak the remote control won’t
operate the RA-1570 consistently. Installing fresh batteries should eliminate
the problem.
AC Power and Control
AC Power Input i
Because of its relatively high power rating, the RA-1570 can draw
considerable current. Therefore, it should be plugged directly into a
2-pin polarized wall outlet. Do not use an extension cord. A heavy duty
multi-tap power outlet strip may be used if it (and the wall outlet) is
rated to handle the current demanded by the RA-1570 and all the other
components connected to it.
Your RA-1570 is configured at the factory for the proper AC line voltage
in the country where you purchased it (either 120 volts AC or 230