Owner's Manual

10
front IR can be turned on/off by doing the following:
• Press and Hold the Left Knob for two seconds
• Turn the Left Knob to the menu choice
“SETUP: Front IR”
• Turn the Right Knob clockwise for Enabled
(on) or counterclockwise (off)
• Press and release the Left Knob to exit the
Setup menu
AC Power
This connection is essential. Plug the female end of
the supplied AC Power Cord into the AC connector
(standard 15 ampere IEC) located in the rear right
corner of the MA12000. Plug the male end of the
AC Power Cord into a grounded and functioning AC
outlet.
Power Control (Trigger) Outputs
The MA12000 has three Power Control Outputs or
Triggers:
• MAIN
• TRIG 1
• TRIG 2
Power Control enables power on/off signals to go to
connected components so that other components can
automatically power on (or off) as called for by the
MA12000.
Connect components to the Triggers using a 3.5mm
stereo mini plug. See Figure 06. The Triggers work
by sending on/off signals in the form of +12 volt/0
volt to connected McIntosh components. See “Power
Control Triggers 1 and 2” on page 23.
Power
Control
Meter
Illumination
Control
Ground
Passthru
The MA12000’s PASSTHRU feature allows
your 2-channel system to be incorporated into a
multichannel system, typically as the left and right
front speakers. When the connected unit (Master)
powers on, it will take control of your MA12000.
The MA12000 will send the signal to your amplier
and speakers at a volume controlled by the Master.
The MA12000 preamplier is now a slave to
the source unit and you cannot control the sound
from this unit until the source unit is shutoff or
disconnected.
To use the PASSTHRU feature, connect the
controlling unit to the MA12000’s PASSTHRU
connector using the same type of cable as used for
Power Control (Trigger) Outputs. The MA12000
PASSTHRU jack should be connected to a Power
Control Trigger Output of the controlling unit.
To enable (or disable) PASSTHRU, enter Setup.
When enabled, an Input must be assigned to
PASSTHRU. When in PASSTHRU mode, the
MA12000 will send the signal from the assigned
Input to the MA12000’s Outputs. The volume will be
dictated by the controlling unit.
To turn off or assign an Input for PASSTHRU:
• Press and Hold the Left Knob for two seconds
• Turn the Left Knob to the menu choice
“SETUP: PASSTHRU”
• Turn the Right Knob to scroll through the
following options:
• Off
• Balanced
• Unbal 1
• Unbal 2
(Note: if you have changed an Input’s
name, the new name will appear.)
• Press and release the Left Knob to exit Setup.
Your choice will be saved
When in PASSTHRU mode, control of the
MA12000 is limited to the Trim functions: DISPLAY
BRIGHTNESS and AMP METER LIGHT. To
regain controls, the Controlling unit must be shut (or
Power Control cable removed from the PASSTHRU
connector.)
For an example Passthru diagram, see “Passthru
Example” on page 13.
Data Out
The MA12000 will convert IR Remote Control data
to share with McIntosh components connected to
the DATA PORTS. This will allow units that are
out of range of an IR signal to receive commands.
A McIntosh source can thereby be controlled by the
MA12000 Remote.
There are four DATA PORTS labeled 1 through 4.
To connect a McIntosh unit to a Data Port, use a
3.5mm stereo mini phone plug cable, see Figure 07.
Data
Signal
N/C
Data
Ground
Figure 06– Power control (trigger) mini plug
Figure 07– Data Port mini plug