RB-1080 Stereo Power Amplifier

Placement

The RB-1080 generates heat as part of its nor- mal 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 chas- sis, and reasonable airflow through the in- stallation location, to prevent the amplifier from overheating.

Likewise, remember the weight of the ampli- fier when you select an installation location. Make sure that the shelf or cabinet can sup- port its considerable bulk. Again, use com- mon sense.

AC Power and Control

AC Power Input

Because of its high power rating, the RB-1080 can draw considerable current. Therefore, it should be plugged directly into a 2-pin po- larized wall outlet. Do not use an extension cord. A heavy duty multi-tap power outlet strip may be used if it (and the wall outlet) is rated to handle the current demanded by the RB-1080 and all the other components con- nected to it.

Be sure the Power Switch on the front panel of the RMB-1095 is turned off (in the out po- sition). Then, connect the supplied power cord to the Power Connector on the back panel of the amplifier and to the AC power outlet.

Your RB-1080 is configured at the factory for the proper AC line voltage in the country where you purchased it (either 115 volts AC or 230 volts AC with a line frequency of either 50 Hz or 60 Hz). The AC line configuration is noted on a decal on the back panel.

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Note: Should you move your RB-1080 amplifier to another country, it is possible to reconfigure your amplifier for use on a different line voltage. Do not attempt to perform this conversion yourself. Opening the enclosure of the RB-1080 exposes you to dangerous voltages. Consult a qualified service person or the Rotel factory service department for information.

If you are going to be away from home for an extended period of time such as a month- long vacation, it is a sensible precaution to unplug your amplifier (as well as other au- dio and video components) while you are away.

Power Switch and Power Indicator

The power switch is located on the front panel of your amplifier. To turn the amplifier on, push the switch in. The LED indicator above the switch will light, indicating that the amplifier is turned on. To turn the amplifier off, push the button again and return it to the out po- sition.

Trigger ON/OFF

Mode Selector

The Amplifier provides the option for manual or automatic power on/off operation. These modes are selectable using a toggle switch on the back panel.

With the switch in the +12V TRIGGER ON position, the amplifier is turned on automati- cally when a 12V trigger signal is present at the 3.5 mm Jack of TRIGGER IN on the rear panel. The amplifier will go into standby mode if the +12V signal is not present. The front panel POWER SWITCH overrides this function. It must be ON for the +12V trigger to work. Turning the switch OFF cuts power to the amplifier, regardless of whether or not a trigger signal is present.

12V Trigger Input

and Output

The jack labeled IN is for connecting the 3.5mm Plug/Cable carrying a +12 volt trig- ger signal to turn the amplifier on and off. To use this feature the toggle switch must be set to the ON position. This input accepts any control signal (AC or DC) ranging from 3 volts to 30 volts.

The jack labeled OUT is for connecting an- other 3.5mm plug/cable to provide a 12V trigger signal to other components. The 12V output signal is available whenever a +12 volt trigger signal is applied to the IN connector.

Protection Circuitry

The RB-1080 features a thermal protection cir- cuit that protects the amplifier against potential damage in the event of extreme or faulty operating conditions. Unlike many designs, the RB-108Ê 0’s protection circuit is indepen- dent of the audio signal and has no impact on sonic performance. Instead, the protection circuit monitors the temperature of the output devices and shuts down the amplifier if tem- peratures exceed safe limits.

Most likely, you will never see this protection circuitry in action. However, should a faulty condition arise, the amplifier will stop play- ing and the LED indicator on the front panel will light up.

If this happens, turn the amplifier off, let it cool down for several minutes, and attempt to iden- tify and correct the problem that caused the protection circuitry to engage. When you turn the amplifier back on, the protection circuit will automatically reset and the indicator LED should go out.

In most cases, the protection circuitry activates because of a fault condition such as shorted speaker wires, or inadequate ventilation lead- ing to an overheating condition. In very rare cases, highly reactive or extremely low im- pedance speaker loads could cause the pro- tection circuit to engage.

If the protection circuitry triggers repeatedly and you are unable to isolate and correct the faulty condition, contact your authorized Rotel dealer for assistance in troubleshooting.

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Rotel RB-1080 owner manual Trigger ON/OFF Mode Selector, 12V Trigger Input Output
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RB-1080 specifications

The Rotel RB-1080 is a highly regarded power amplifier that exemplifies quality and performance in the world of high-fidelity audio. Renowned for its robust construction, the RB-1080 delivers exceptional sound clarity and depth, making it a popular choice among audiophiles and music enthusiasts alike.

At the heart of the RB-1080 lies its Class AB amplifier design, which strikes a balance between efficiency and audio fidelity. With a powerful output of 200 watts per channel at 8 ohms, it can easily drive even the most demanding speakers, providing a dynamic range that brings music to life. The amplifier features a dual mono configuration, allowing for independent left and right channel amplification. This design helps to minimize crosstalk between channels and contributes to a more precise soundstage.

Another notable feature of the RB-1080 is its robust power supply. The amplifier is equipped with a toroidal transformer and large capacitors, which provide the necessary headroom for dynamic music playback. This power supply design ensures that the amplifier can maintain clean and stable power delivery, resulting in improved bass response and overall sound quality.

The RB-1080 also incorporates proprietary technologies, including Rotel’s Balanced Design. This design philosophy prioritizes the use of high-quality components and circuits to ensure that signal integrity and audio performance are uncompromised. Furthermore, the amplifier includes a sophisticated thermal management system, which helps to dissipate heat efficiently, allowing it to perform optimally even during extended periods of use.

In terms of connectivity, the RB-1080 features both RCA and balanced XLR inputs, providing flexibility for various audio setups. This versatility makes it a suitable option for both home theater systems and dedicated two-channel audio configurations.

Physical characteristics of the RB-1080 include a solid aluminum front panel and a heavy-duty chassis, reflecting its high-end build quality. The sleek design not only enhances its aesthetic appeal but also contributes to minimizing vibration, which can adversely affect sound quality.

In summary, the Rotel RB-1080 is a powerful and meticulously engineered amplifier that delivers remarkable audio performance. With its Class AB design, robust power supply, and high-quality components, it is an ideal choice for anyone seeking to enhance their listening experience. Whether used in a home theater or an audiophile setup, the RB-1080 stands out as a top-tier amplifier that embodies the principles of quality sound reproduction.
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