Using The Level Meters And Clipping Indicator; Using Speaker A/B; Replacing The Fuse - Radio Shack 32-2055 User Manual

Beyond the Basics
using the level meters and clipping
indicator
The illuminating fl ow of the output LED indicators refl ect the
amplifi er's output level. The stronger the signal the more
LEDs illuminate. The maximum signal through the MPA-250
should cause the CLIPPING LED to blink at peak music levels.
LED Indicators

using speaker A/B

Press in SPEAKER A or SPEAKER B on the front of the
amplifi er for the channel you want to listen to. Or, press
in SPEAKER A and SPEAKER B to listen to all connected
speakers.
Speaker A
If you have connected 4-Ohm speakers to the
NOTE amplifi er, do not set both SPEAKER A and
SPEAKER B to IN (use 8-Ohm speakers only for this
mode).

replacing the fuse

If the amplifi er does not operate, you might need to replace
the fuse on the back of the amplifi er with another 7-amp,
250-volt fuse, (not supplied).
CLIPPING
LED
Speaker B
Fuse
Holder Cap
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• Let the amplifi er cool down and see if it starts
NOTE
again before you presume a fuse needs to be
replaced.
• Do not use a fuse with a rating other than that
specifi ed here. Doing so might damage your
amplifi er.
1. Unplug the amplifi er from the AC outlet.
2. Turn the fuse holder cap on the back of the amplifi er
and pull out the cap to remove the fuse.
3. If the fuse is blown, replace it. Use only an identical
fuse with the proper rating. The fuse must be 7 amps.
4. Insert the fuse into the fuse holder's socket, press
the fuse holder back into the amplifi er. Turn the fuse
holder's cap clockwise to tighten it.
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Beyond the Basics