13
Power On
To have the MC611 automatically turn On or Off
when a control center turns on or off, rotate the power
switch to the Remote position. 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 MC611 and the Audio
Preamplifier or A/V Control
Center, in order for the
remote power turn-on to
function.
Meter Selection
Rotate the meter mode switch to select the meter
operation mode you desire.
Refer to figures 9 and 10.
Lights Off - Meter
illumination
is switched
Off and the
meter will
continue to
indicate the power output.
Note: When Power Control Input of the
MC611 is connected to an Audio
Preamplifier or A/V Control Cen-
ter with Remote Meter Illumination
Control, the Meter Illumination
will automatically be remotely con-
trolled (On/Off) with the METER
Switch set to the WATTS or HOLD
position.
Watts- The meter responds to all the musical
information being produced by the am-
How to Operate
How to Operate
plifier. It indicates to an accuracy of at
least 95% of the power output with only
a single cycle of a 2000Hz tone burst.
Hold - The meter pointer is locked to the high-
est power peak in a sequence of peaks.
It is electronically held to this power
level until a higher power peak passes
through the amplifier. The meter point-
er will then rise to the newer higher
indication. If no further power peaks
are reached, the meter pointer will
very slowly return to its rest position
or lower power level. The decay rate is
approximately 6dB per minute.
Note: The MC611 Power Output Meter
indicates the actual power delivered
to the loudspeakers by responding
to the combination of current and
voltage output.
Input Mode Switch
The Input Mode Switch, which is lo-
cated on the Rear Panel of the MC611,
allows selection of either the Bal-
anced or Unbalanced Input. Refer to
figure 11.
Figure 8
Figure 9
Figure 10
Figure 11
Auto Off Switch
The MC611 incorporates Power Save Circuitry to
automatically place the MC611 into the power saving
Standby Mode approximately 30 minutes after there
has been an absence of an audio input signal.
When there is a Power Control Connection be-
tween the MC611 and a Preamplifier with Power Save
Circuitry, the AUTO OFF Switch is bypassed (located
on the Rear Panel of the MC611). Refer to
figure 12.
In the event there is no Power Control
Connection and the Power Save Circuitry
is activating inappropriately relative to
your specific use of the MC611, place
the AUTO OFF Switch in the DISable
position.
Note: If the Power Save Circuitry has switched Power
to the MC611 OFF, place the POWER in the OFF
Position and then in the ON position to reset the
circuitry.
Figure 12
Summary of Contents for MC611
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