32-2001.fm Page 10 Friday, February 4, 2000 7:53 AM

Taps

You need a separate transformer for each speaker.

Line transformers have several connec- tors called taps.

The primary taps (on one side of the transformer) are the inputs and are rated in watts. The secondary taps (on the op- posite side of the transformer) are the outputs and are rated in ohms.

Primary

Secondary

Taps

Taps

Cautions:

•Before you connect the speakers, be sure the total wattage of the pri- mary taps you intend to use does not exceed the amplifier’s maximum 20-watt output power rating.

•Avoid multiple connections to the amplifier’s 70V and COM terminals.

Follow these steps to make the connec- tions.

1.Connect a wire from the amplifier’s 70V terminal to the transformer’s pri- mary tap that matches your speaker’s wattage rating.

Note: Usually, the wattage connec- tions on the primary side of the transformer are the same for all speakers. If you want a particular speaker to have a higher volume level, use a higher wattage tap on the primary side of its transformer.

2.Connect a wire from the amplifier’s COM terminal to the COM taps on the transformer’s primary side.

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Radio Shack MPA-40, 32-2001, 811081640B owner manual Taps
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MPA-40, 32-2001, 811081640B specifications

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