Radio Shack MPA-125 - Manual (Page 2)

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Contents
Features .................................................................................................................................. 3
Preparation ............................................................................................................................. 4
Presetting the Controls ...................................................................................................... 4
Presetting Audio Input Devices .................................................................................. 4
Presetting the Amplifier .............................................................................................. 4
Mounting the Amplifier ...................................................................................................... 5
Placing the Speakers ........................................................................................................ 5
Connections ............................................................................................................................ 5
Connecting Input Sources ................................................................................................. 5
Connecting Microphones ........................................................................................... 5
Connecting a Turntable .............................................................................................. 6
Connecting an Auxiliary Sound Source ..................................................................... 7
Connecting the MIX BUS Jack ................................................................................... 7
Connecting an Equalizer ............................................................................................ 7
Connecting the Speakers .................................................................................................. 8
Determining Total Speaker Impedance ...................................................................... 8
Preparing the Speaker Wire ....................................................................................... 9
Connecting Only One Speaker .................................................................................. 9
Connecting Two Speakers In Series .......................................................................... 9
Connecting Two Speakers In Parallel ...................................................................... 10
Connecting Four Speakers In Series/Parallel Combination ..................................... 10
Connecting Speakers with Transformers ................................................................. 11
Connecting Power ........................................................................................................... 12
Using Your Amplifier ........................................................................................................ 12
Safety Indicators ............................................................................................................. 13
Monitoring the Sound Sources ........................................................................................ 13
Listening Safely ....................................................................................................... 13
Using an Equalizer .......................................................................................................... 13
Using the Feedback Filter ............................................................................................... 14
Troubleshooting ................................................................................................................... 15
Care and Maintenance ......................................................................................................... 16
Replacing the Fuse ......................................................................................................... 17
The FCC Wants You to Know ......................................................................................... 17
Specifications ....................................................................................................................... 18
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