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Contents
Important Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Figure 1: Controls and Connections
Figure 2: Analog Inputs and Speaker Output Connections
About Rotel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
AC Power and Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Signal Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Speaker Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Speaker Connection 89
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
About Rotel
Our story began over 50 years ago. Over the decades, we have received
hundreds of awards for our products and satisfied hundreds of thousands
of people who take their entertainment seriously - like you!
Rotel was founded by a family whose passionate interest in music led them
to manufacture high-fidelity components of uncompromising quality. Through
the years, that passion has remained undiminished and the family goal of
providing exceptional value for audiophiles and music lovers, regardless
of their budget, is shared by all Rotel employees.
Rotel's engineers work as a close team, listening to, and fine tuning, each
new product until it reaches their exacting musical standards. They are
free to choose components from around the world in order to make that
product the best they can. You are likely to find capacitors from the United
Kingdom and Germany, semiconductors from Japan or the United States,
while toroidal power transformers are manufactured in Rotel's own factory.
We all have concerns about our environment. And, as more and more
electronics are produced it is especially important for a manufacturer to do all
it can to engineer products that have a minimum impact on the environment.
RMB-1504 Four Channel Power Amplifier
At Rotel, we are proud to do our part. We have reduced the lead content
in our products by using special lead-free ROHS solder and components.
Our engineers continually strive to improve power supply efficiency without
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compromise to quality. When in standby mode Rotel products use minimal
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power to meet global Standby Power Consumption requirements.
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The Rotel factory is also doing their part to help the environment through
constant improvements to product assembly methods for a cleaner and
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greener manufacturing processes.
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All of us at Rotel thank you for buying this product. We are sure it will bring
you many years of enjoyment.
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Getting Started
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Thank you for purchasing the Rotel RMB-1504 Four Channel Power Amplifier.
When used in a high-quality music or home theater system, your Rotel
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product will provide years of musical enjoyment.
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The RMB-1504 is a sophisticated four-channel power amplifier. Discrete
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output devices, a massive power supply with toroidal transformer, premium
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components, and Rotel's Balanced Design ensure superb sound quality.
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High current capability allows the RMB-1504 to drive difficult speaker
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loads with ease.
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Features
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• Four-channel power amplifier, with 70 watts per channel output into 8 ohms.
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• Front panel input level controls.
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• User-selectable power on/off configuration: manual, automatic signal
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sensing, or controlled by remote 12 volt trigger signal.
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• Protection circuitry against fault conditions with front panel indicators.
• Input linking, input mono switch and signal output link connectors for
maximum system configuration flexibility.
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 installation and operating
instructions, it provides valuable information on various RMB-1504 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 RMB-1504 in anything other than the original
packing material may result in severe damage to your amplifier.
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
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