Radio Shack MPA-125 owner manual Connecting an Auxiliary Sound Source, Connecting the MIX BUS Jack

Page 7

32-2003.fm Page 7 Tuesday, March 28, 2000 10:45 AM

Connecting an Auxiliary Sound Source

You can connect any high-level sound source, such as a CD player, tape deck, or tuner, to the CD/AUX jack on the back of the amplifier.

CD/AUX

Connecting the MIX BUS Jack

You can connect another MPA-125 to this jack to double the size of your PA system. This lets you use up to eight microphones (or six microphones and two turntables), and two auxiliary sound sources.

Use a shielded cable with phono plugs at each end, and connect the cable between the MIX BUS jacks on the back of the two amplifiers. For the best results, do not use a cable longer than 6 feet.

MIX BUS Jack

Connecting an Equalizer

You can connect an equalizer or other external signal processor to the EQ IN and EQ OUT jacks on the back of the amplifier.

EQ IN/OUT

Note: You can also connect a tape deck to the EQ OUT jack for recording.

Connections			7

Image 7

Contents MPA-125 100-Watt PA Amplifier Contents Master Volume Control lets you adjust FeaturesPreparation Presetting the ControlsPresetting Audio Input Devices Presetting the AmplifierMounting the Amplifier Connecting Input SourcesConnecting Microphones ConnectionsConnecting a Turntable Connecting the MIX BUS Jack Connecting an Auxiliary Sound SourceConnecting an Equalizer Determining Total Speaker Impedance Connecting SpeakersConnecting Only One Speaker Preparing the Speaker WireConnecting Two Speakers In Series Connecting Four Speakers In Series/Parallel Combination Connecting Two Speakers In ParallelTransformers offer these advantages Connecting Speakers with Trans- formersConnecting Power Using Your AmplifierListening Safely Safety IndicatorsUsing AN Equalizer Monitoring the Sound SourcesUsing 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.