A Word About Watts; Getting Started; A Few Precautions; Placement - Rotel RA-1572 Owner's Manual

A Word About Watts

This amplifier's power output is rated as 120 watts for each channel, when
both channels are operating together at full power. Rotel has chosen to
specify the power output in this way because, in Rotel's experience, it gives
the truest value of the receiver or amplifier's power capability.
When comparing specifications for different products, you should be
aware that power output is often specified in other ways, so you may not
be comparing like with like. For example, the power output may be quoted
with only one channel operating, giving a higher maximum figure.
A loudspeaker's impedance rating indicates the electrical resistance or
load it offers when connected to the amplifier, usually 8 ohms or 4 ohms.
The lower the impedance, the more power the speaker will need. In effect,
a 4 ohm speaker will require twice as much power as an 8 ohm speaker.
However, Rotel amplifiers are designed to work into any speaker impedance
between 8 and 4 ohms, and with all the channels working up to their full
power. Because Rotel designs are optimized for use with all channels operating
together, Rotel is able to specify the true power output for both channels.

Getting Started

Thank you for purchasing the Rotel RA-1572 Stereo Integrated Amplifier.
When used in a high-quality music audio system, your Rotel product will
provide years of musical enjoyment.
The RA-1572 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-1572 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-1572 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-1572 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-1572 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
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 amplifier.
Please read this manual carefully. In addition to basic installation and
operating instructions, it provides valuable information on various RA-1572
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 shipping carton and all enclosed packing material for future use.
Shipping or moving the RA-1572 in anything other than the original packing
material may result in severe damage to your amplifier.
If included in the box please fill out and send in the owner's registration
card. 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-1572 can
be affected by its environment. Avoid placing the RA-1572 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-1572 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-1572 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-1572 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.

Second Amplifier Remote Code

The factory setting is remote code 1. If you find that the remote is conflicting
with other Rotel amplifiers, you can change to remote code 2 with the
following steps.
1. From the remote control press Tuner
seconds, to set the remote control to send Audio Code 2.
K and 2 O at the same time for 5
11