How to Operate and Read the Power Output Meters
How to Operate
Power On
With the POWER Switch set to the REMOTE Position, the MC207 will turn On or Off when
an A/V Control Center turns On or Off. For manual operation, rotate the POWER Switch to the ON or OFF Position as desired. Refer to figure 8.
Note: There must be a power control connection between the MC207 and the McIntosh
A/V Control Center in order Figure 8 for the remote power
to function.
Meter Illumination
Rotate the METER LIGHTS Switch to select Meter Illumi- nation On or Off. Refer to figure 9.
Note: When the MC207 is connected to a McIntosh MX132, MX134 or MX135 A/V Control Center with a DB25 conductor cable, the meter illumination will automatically switch On during the Loudspeaker Level Setup Adjustment.
Figure 9
Impedance Switch
The MC207’s Dynamic Power Manager circuitry allows for the connection of either 4 ohm or 8 
ohm Loudspeakers to its output terminals, 
while at the same time delivering the same 
power output. Refer to figure 10. Place the 
IMPEDANCE Switch to the position (4 
ohm or 8 ohm) that matches the im-
pedance of the connected Loudspeak- ers. In the event that some of the Loudspeakers in the system are of different impedance, use the imped- ance of the Left and Right Front Loudspeakers to set the IMPED- ANCE Switch position. Refer to figure 11.
How to Read the Power Output Meters
The MC207 Power Output Meters are calibrated to allow for the direct reading of either the Power Output in Watts or Decibels going to the Front Left, Center and Right Loudspeakers. The meters respond to all the musical infor- mation being produced by the amplifier. They indicate to an accuracy of at least 95% of the power output with only a single cycle of a 2000Hz tone burst. Refer to figure 12.
Figure 12
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