of power when they
are driven to clipping
and can have more
than 40% harmonic
distortion. The extra
energy content of the
clipped signal will
damage most speak-
ers. A Mclntosh ad-
vancement helps to
protect your speaker
from this kind of damage. The MA 6200 has a built in
"waveform comparator" that compares the wave
shape of the input signal with the output signal. If
the non-linearity between the two signals exceeds
0.5% the POWER GUARD circuit operates. Opera-
tion is indicated when the red limit indicators turn
on. As long as the amplifier operates without
overload the normal indicator illuminates.
PUSHBUTTON INDICATOR LAMPS
These are eight red indicator lamps above the
pushbutton switches. They indicate the function
selected by the corresponding pushbutton. These in-
dicators are also connected to an internal thermal
overload protector circuit. In the event of high inter-
nal temperatures these indicators will extinguish
and output power will be disconnected from the
loudspeaker. When the unit cools normal operation
will be restored.
11
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