How To Operate The Mc2Kw Power Amplifier - McIntosh MC2KW Owner's Manual

How to Operate the MC2KW Power Amplifier

Power On
With the POWER Switch set to the REMOTE Position, the
MC2KW Power Amplifier will
turn On or Off when a McIntosh
Preamplifier or A/V Control Cen-
ter switches On or Off. For manual
operation, rotate the POWER
Switch to the ON or OFF Position
as desired. Refer to figure 12.
Notes: 1. There must be a power
control connection
between the MC2KW
OUTPUT MODULE
and the McIntosh
Preamplifier or A/V Control Center in order for
the remote power turn-on to function.
2. The MC2KW Power Modules will not switch On,
with the front Panel Illuminated, unless they are
connected to the MC2KW Output Module with the
supplied custom hookup cables and the Output
Module is switched On.
Meter Selection
Rotate the meter mode switch to select the meter operation
mode desired. Refer to figures 13 and 14.
Note: When the MC2KW is connected to a McIntosh
Preamplifier with Remote Meter Illumination Control,
the illumination of Power Output Meter and McIntosh
World Globe is controlled by the Preamplifier, thus
over riding the illumination On setting of Meter
Selector Switch when set to the Watts or Hold Modes.
Lights Off - Meter lights are
turned off and
the meter will
continue to indi-
cate the power
output.
Watts- The meters re-
spond to all the
musical informa-
tion being pro-
duced by the am-
plifier. They indicate 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 highest
power peak in a sequence of peaks. It is elec-
tronically held to this power level until a
higher power peak passes through the ampli-
fier. The meter pointer will then rise to indicate
the higher peak. If no further power peaks are
18
How to Operate the MC2KW Power Amplifier
Figure 12
Input Mode Switch
The Input Mode Switch, which is located
on the Rear Panel of the MC2KW OUT-
PUT MODULE, allows selection of either
the Balanced or Unbalanced Input. Refer to
figure 15.
Pilot Light
When AC Power is applied to the MC2KW the Front Panel
Pilot Light will illuminate. The Pilot
Light is located about 1-1/2 inches
(3.81cm) below the Power Guard
Light. Refer to figure 16.
Power Guard Light
The Power Guard Light, driven by the
Power Guard Circuitry, under normal
conditions will only illuminate momen-
Figure 13
tarily during extremely loud peaks in the music. This occurs
when the MC2KW Power Amplifier is being asked to de-
liver a power level way beyond its rated 2,000 watt output.
Refer to figure 16.
In the event that either or both MC2KW Power Modules
over heat, due to improper ventilation and/or high ambient
temperature, the protection circuits will activate. The sound
will be muted and the MC2KW Output Module Front Panel
Power Guard LED will continuously indicate ON. When the
MC2KW Power Modules have returned to a safe operating
temperature, normal operation will resume.
Figure 14
reached, the meter pointer will very slowly re-
turn to its rest position or lower power level.
The decay rate is approximately 6dB per
minute.
Note: The MC2KW OUTPUT MODULE Power
Output Meter indicates the actual
wattage delivered to the loudspeakers by
responding to the combination of current
and voltage output.
Figure 15
Figure 16