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Contents
Important Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Figure 1: Controls and Connections
Figure 2: Hook-up Illustration
About Rotel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
A Word About Watts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
AC Power and Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Signal Connections 234 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Speaker Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
RS232 Connector 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Cooling Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
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.
RKB Series Eight Channel Power Amplifiers
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
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
greener manufacturing processes.
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All of us at Rotel thank you for buying this product. We are sure it will bring
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you many years of enjoyment.
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A Word About Watts
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The RKB-850 and RKB-D850 power output is quoted as 50 watts for each
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channel, while the RKB-8100 and RKB-D8100 is 100 watts when all eight
channels are operating together at full power.
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Rotel has chosen to specify the power output in this way because, in Rotel's
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experience, it gives the truest value of the receiver or amplifier's power
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capability.
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When comparing specifications for different products, you should be
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aware that power output is often specified in other ways, so you may not
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be comparing like with like. For example, the power output may be quoted
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with only one channel operating, giving a higher maximum figure.
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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.
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However, Rotel amplifiers are designed to work into any speaker impedance
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between 8 and 4 ohms, and with all the channels working up to their full
power. Because the Rotel design is optimized for use with all channels
operating together, Rotel is able to specify the true power output for both
channels.
This can be important for your enjoyment, too. When watching movies, it's
nice to have the amplifier able to reproduce full power into all the channels
at the same time, especially in the case of a volcano exploding!
Getting Started
Thank you for purchasing the Rotel RKB Series Eight Channel Power Amplifier.
When used in a high-quality music audio system, your Rotel product will
provide years of musical enjoyment.
The RKB amplifiers are high-power amplifiers, providing the highest level
of audio performance. A massive power supply, premium components,
and Rotel's Balanced Design ensure superb sound quality. High current
capability allow the amplifiers to drive the most demanding loudspeakers.
Be aware that the RKB amplifiers are capable of high levels of output power.
Make sure that your speakers can handle the power of the amplifier. If in
doubt about your speakers, ask your local Rotel audio dealer for advice.
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