Radio Shack MPA-125 owner manual ˆConnections, Mounting The Amplifier, Placing The Speakers

Models: MPA-125

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MOUNTING THE AMPLIFIER

32-2003.fm Page 5 Tuesday, March 28, 2000 10:45 AM

MOUNTING THE AMPLIFIER

You can mount the amplifier in a standard- sized audio equipment rack or on a desk, shelf, or table. Be sure you place it in a loca- tion with adequate ventilation. Do not put it on thick carpeting (which can restrict air flow) or near a heat source such as a heat vent or radiator (which can cause it to overheat).

PLACING THE SPEAKERS

Speaker placement depends on your room’s size and arrangement. We recommend you play a wide-range recording and experiment with speaker placement until you find the lo- cations that result in the best sound. For the best results, point the speakers in toward the listeners, especially if you place speakers far apart so their coverage areas overlap to pre- vent dead spots (areas not covered by the speakers’ sound). Position the speakers slightly above the level of the listeners’ heads (see “Connecting the Speakers” on Page 8).

ˆConnections

CONNECTING INPUT SOURCES

You can connect optional components such as microphones, a tuner, a turntable, or a CD play- er to your amplifier to expand your audio system. To prevent hum and other noise, use low-ca- pacitance shielded cable. Your local RadioShack store carries a wide selection of audio components and cable.

Before you make any connections, be sure POWER on the front of the amplifier is out and the AC power cord is not plugged in.

Connecting Microphones

You can connect up to four high- or low-impedance microphones to the microphone inputs on the back of the amplifier. Each input (labeled MIC 1, MIC 2, MIC 3, and MIC 4) has a balanced and unbalanced jack. You need a microphone cord with a 1/4-inch (6.35-mm) plug to connect to an unbalanced jack or a microphone cord with a 3-pin XLR plug to connect to a balanced jack.

1/4 -Inch Plug

MIC 4

MIC 3

MIC 2

MIC 1

3-Pin XLR Plug MIC 4 MIC 3 MIC 2 MIC 1

Connections

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Radio Shack MPA-125 owner manual ˆConnections, Mounting The Amplifier, Placing The Speakers, Connecting Input Sources