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10
RA‑1572MKII Stereo Integrated Amplier
Getting Started
Thank you for purchasing the Rotel RA-1572MKII Stereo Integrated Amplier.
When used in a high-quality music audio system, your Rotel product will
provide years of musical enjoyment.
The RA-1572MKII 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-1572MKII 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-1572MKII 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-1572MKII circuitry uses metal lm 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-1572MKII are easy to install and use. If you
have experience with other stereo systems, you shouldn’t nd 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
loudspeakers 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 amplier.
Please read this manual carefully. In addition to basic installation and operating
instructions, it provides valuable information on various RA-1572MKII system
congurations 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 shipping carton and all enclosed packing material for future use.
Shipping or moving the RA-1572MKII in anything other than the original
packing material may result in severe damage to your amplier.
If included in the box please complete the owner’s registration card or
register on line. 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-1572MKII
can be affected by its environment. Avoid placing the RA-1572MKII 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-1572MKII generates heat as part of its normal operation. The heat
sinks and ventilation openings in the amplier 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 airow
through the installation location, to prevent the amplier from overheating.
Remember the weight of the amplier when you select an installation location.
Make sure that the shelf or cabinet can support it. We recommend installing
the RA-1572MKII 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-1572MKII is supplied with an RR-AX93 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 analog audio
signal cables in your installation away from each other. This will minimize
the chance of the analog 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‑AX93 Remote Control
Some functions can be done with either the front panel controls, or the
supplied RR-AX93 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.
Remote Control Batteries
Two 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-AX93. 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-1572MKII
consistently. Installing fresh batteries should eliminate the problem.
AC Power and Control
AC Power Input
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Your RA-1572MKII is congured at the factory for the proper AC line voltage
in the country where you purchased it (either 120 volts AC or 230 volts AC
with a line frequency of either 50 Hz or 60 Hz). The AC line conguration
is noted on a decal on the back panel.
NOTE: Should you move your RA‑1572MKII to another country, it
is possible to recongure your amplier for use on a different line
voltage. Do not attempt to perform this conversion yourself. Opening
the enclosure of the RA‑1572MKII exposes you to dangerous voltages.
Consult a qualified service person or the Rotel factory service
department for information.
NOTE: Some products are intended for sale in more than one country
and as such are supplied with more than one AC cord. Please only use
the one appropriate for your country/region.
Because of its relatively high power rating, the RA-1572MKII can draw
considerable current. Therefore, it should be plugged directly into a polarized
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