Rotel RB-1510 user service Contents, Word About Watts, About Rotel

6		RB-1510 Stereo Power Amplifier
Contents		We all have concerns about our environment. And, as more and more
		electronics are produced and later discarded, it is especially important
Important Safety Instructions	. 2	for a manufacturer to do all it can to engineer products that have a
Figure 1: Controls and Connections	3	minimum negative impact on landfill sites and water tables.
Figure 2: Preamp Input and Speaker Output Connections	3
Important Notes	5	At Rotel, we are proud to do our part. We have reduced the lead
About Rotel	. 6	content in our electronics by using special ROHS solder, while our new
A Word About Watts	. 6	Class D (not digital) amplifiers are up to five times more efficient than
Getting Started	. 7	our legacy designs and still deliver power and performance. These
A Few Precautions	7	products run cool, give minimum wasted energy, are good for the
Placement	7	environment and give better sound too.
Cables	7
AC Power and Control	. 7	Finally, we have printed this brochure on recycled paper stock.
AC Power Input -	7
Power Switch and Power Indicator 1	8	While we understand that these are small first steps, they are still
Protection Indicator 2	8	important ones. And we continue to pursue new methods and
Auto Turn On/Off Mode Selector 8	8	materials for a cleaner and greener manufacturing process.
12V Trigger Input and Output 7	8
Input Signal Connections 56	. 8	All of us at Rotel thank you for buying this product. We are sure it will
Input Mono Switch 4	8	bring you many years of enjoyment.
Front Panel Level Controls 3	8
Signal Output Link Connectors 6	9	A Word About Watts
Speaker Connections	. 9
Speaker Selection	9
Speaker Wire Selection	9	This amplifier’s power output is quoted as 65 watts for each channel,
Polarity and Phasing	9	when both channels are operating together at full power.
Speaker Wire Connection	9
Binding Post Connection 9	9	Rotel has chosen to specify the power output in this way because, in
Plug-in Connection 0	9	Rotel’s experience, it gives the truest value of the receiver or amplifier’s
Troubleshooting	10	power capability.
Front Panel Power Indicator Is Not Lit	10
No Sound	10	When comparing specifications for different products, you should be
Protection Indicator Is Lit	10	aware that power output is often specified in other ways, so you may
Specifications	10	not be comparing like with like.

About Rotel

Our story began nearly 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.

For example, the power output may be quoted with only one channel operating, giving a higher maximum figure. The highly regulated power supplies of the Rotel Class D amplifiers ensures that they will produce the full specified power output to one or both channels.

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.

So ideally, the amplifier should be give double the power into a 4 ohm load – a rating of 65 watts into an 8 ohm load should become 130 watts into 4 ohms. Using lower impedance speakers makes greater demands on the amplifier’s power supply, because it will be drawing more current and giving off more heat.