5
Power Control Connector
The MCLK12 Power Control Input receives an On/
Off signal from +5 to +12 volts. The Power Control
Output will in turn provide a +5 to +12 volts Output
Signal with a total current up to
50mA. An additional connec-
tion is for controlling the illu-
mination of Hours and Minutes
Meters on the MCLK12 along
with Power Output Meters on
compatible McIntosh Power Amplifiers. The 1/8 inch
stereo mini phone plug connects to a McIntosh Pream-
plifier or A/V Control Center Power Control Output.
Note: The Power Control Connecting Cable is available
from the McIntosh Parts Department:
Data and Power Control Cable Part No. 170-202
Six foot, shielded 2 conductor, with 1/8 inch stereo
mini phone plugs on each end.
Connector/Cable Information
General Information, Connector/Cable Information, Introduction and Performance Features
Power
Control
Ground
Meter
Illumination
Control
Pass Thru
The McIntosh MCLK12 Analog Clock is a precision
time piece designed to complement any Audio or Au-
dio/Video System.
Introduction
Performance Features
• Illuminated Meters
The large Minutes and Hour Meters on the MCLK12
display the current time and are illuminated with extra
long life Light Emitting Diodes (LEDs)
• Power Control
The Power Control Input and Output connections
provides convenient Turn-On/Off of Front Panel Il-
lumination of the MCLK12 along with other McIntosh
Components.
• Precision Oscillator
The MCLK12 circuitry utilizes a precision tempera-
ture compensated quartz crystal oscillator for accurate
time keeping, even with room temperature fluctua-
tions.
• Lithium Battery
The long life Lithium Battery is used for backup of
the crystal oscillator for accurate time keeping in the
event there is an interuption of AC Power.
• Precision Parts
Only the finest precision parts are used throughout.
• Efficient Power Supply
Fully regulated Power Supply ensures stable, accu-
rate time keeping operation even though the power
line many vary. Its efficient design allow for very low
energy consumption.
• Fiber Optic Solid State Front Panel Illumination
The even Illumination of the Front Panel is accom-
plished by the combination of custom designed Fiber
Optic Light Diffusers and extra long life Light Emit-
ting Diodes (LEDs).
• Glass Front Panel
The famous McIntosh Illuminated Glass Front Panel
ensures the pristine beauty of the MCLK12 will be
retained for many years.
Summary of Contents for MCLK12
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