Radio Shack MPA-125 owner manual Replacing the Fuse, FCC Wants YOU to Know

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32-2003.fm Page 17 Tuesday, March 28, 2000 10:45 AM

REPLACING THE FUSE

If the amplifier does not operate, you might need to replace the fuse on the back of the amplifier with the supplied (or another) 3- amp, 250-volt fuse.

Important: Let the amplifier cool down and see if it starts again before you assume a fuse needs to be replaced.

Caution: Do not use a fuse with ratings other than those specified. Doing so might damage your amplifier.

1.Unplug the amplifier.

2.Use a Phillips screwdriver to remove the fuse holder cap on the back of the ampli- fier, then pull out the cap to remove the fuse.

3.If the fuse is blown, replace it.

4.Insert the fuse into the fuse holder’s socket, press the fuse holder back into the amplifier, then use a Phillips screw- driver to replace the fuse holder cap.

THE FCC WANTS YOU TO

KNOW

Your amplifier might cause TV or radio inter- ference even when it is operating properly. To determine whether your amplifier is caus- ing the interference, turn off your amplifier. If the interference goes away, your amplifier is causing it. Try to eliminate the interference by:

•moving your amplifier away from the receiver

•contacting your local RadioShack store for help

Care and Maintenance

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Contents MPA-125 100-Watt PA Amplifier Contents Master Volume Control lets you adjust FeaturesPresetting Audio Input Devices Presetting the ControlsPresetting the Amplifier PreparationConnecting Microphones Connecting Input SourcesConnections Mounting the AmplifierConnecting a Turntable Connecting an Equalizer Connecting an Auxiliary Sound SourceConnecting the MIX BUS Jack Determining Total Speaker Impedance Connecting SpeakersConnecting Two Speakers In Series Preparing the Speaker WireConnecting Only One Speaker Connecting Four Speakers In Series/Parallel Combination Connecting Two Speakers In ParallelTransformers offer these advantages Connecting Speakers with Trans- formersConnecting Power Using Your AmplifierUsing AN Equalizer Safety IndicatorsMonitoring the Sound Sources Listening SafelyUsing the Feedback Filter Symptom Possible Cause Suggestion TroubleshootingCare and Maintenance FCC Wants YOU to Know Replacing the FuseSpecifications Fm Page 19 Tuesday, March 28, 2000 1045 AM Limited One-Year Warranty

MPA-125 specifications

The Radio Shack MPA-125 is a versatile and powerful amplifier that was designed to meet the demands of audio enthusiasts and professionals alike. Renowned for its robust performance and reliability, the MPA-125 has garnered a reputation as a dependable choice for a variety of sound applications, from home audio systems to live sound reinforcement.

One of the standout features of the MPA-125 is its impressive power output. With a rating of 125 watts per channel at 8 ohms, this amplifier ensures that audio signals are delivered with clarity and precision, making it suitable for driving a wide range of speakers. The 2-channel design allows for stereo applications, providing a rich and immersive listening experience. Additionally, the MPA-125 can operate at a low impedance, ensuring compatibility with various speaker configurations.

The MPA-125 is equipped with several advanced technologies that enhance its performance. The built-in thermal protection circuit safeguards the amplifier from overheating, allowing it to operate efficiently even during extended use. The amplifier also features a soft clipping circuit, which prevents distortion during peak output levels, ensuring that audio quality remains consistent and clear at high volumes.

User-friendly design is another hallmark of the MPA-125. The front panel includes easy-to-use volume controls, indicator lights, and speaker output terminals. The amplifier is designed for straightforward integration into existing audio setups, making it accessible for users of all experience levels. The balanced XLR inputs provide a secure and noise-free connection, ideal for professional audio applications.

Constructed with high-quality components, the MPA-125 is built to last, ensuring longevity and sustained performance over time. Its compact form factor makes it easy to incorporate into various environments, from home theaters to portable sound systems.

Overall, the Radio Shack MPA-125 is a reliable and powerful amplifier that brings out the best in audio equipment. Its combination of solid performance, user-friendly features, and advanced technologies makes it an excellent choice for anyone looking to elevate their audio experience, whether for casual listening or professional use.
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