Radio Shack MPA-50 owner manual Troubleshooting

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32-2002.fm Page 13 Friday, February 11, 2000 11:36 AM

ˆTroubleshooting

If you should run into difficulties, check the wiring of the system. Are there any short circuits in the speaker wiring? Have you provided adequate ventila- tion? Did you calculate speaker imped- ance correctly?

Be sure microphones and connecting cables are not defective.

Be sure you are using large enough speaker wire. You should always use 16-gauge (or larger) wire. The longer the run of speaker wire, the heavier the gauge should be.

If you have feedback problems, reposi- tion your microphones and speakers, or adjust MASTER VOLUME to a lower set- ting.

If the amplifier does not work at all, check the fuse on the rear panel. If it is blown, replace it with one of the same size and type (see “Replacing the Fuse” on Page 14).

If you cannot solve the problem, contact your local RadioShack store for assis- tance.

Troubleshooting

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Contents MPA-50 40-Watt PA Amplifier Contents Features Preparation Presetting ControlsChoosing a Location Placing the SpeakersMaking Connections Speaker Phasing SpeakersDetermining Total Speaker Impedance Connecting Speakers One Speaker Speakers in Parallel Series and Parallel Combined Multiple Speakers with Transformers Fm Page 11 Friday, February 11, 2000 1136 AM Controls and Operation Troubleshooting Replacing the Fuse CarePhono SpecificationsRadioShack