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XLR Connectors
Below is the Pin configuration for the XLR Balanced Input
Connectors on the MC1.2KW. Refer to the diagram for
connection:
PIN 1: Shield/Ground
PIN 2: + Output
PIN 3: - Output
Power Control Connector
The MC1.2KW’s Power Control Inputs receive On/Off
signals of +5 volts. An additional con
-
nection is for controlling the illumina-
tion of the MC1.2KW Power Output
Meters. The 1/8 inch stereo mini
phone plug connects to a McIntosh
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 Information, Introduction and Performance Features
Connector and Cable Information
Introduction
Performance Features
PIN 2
PIN 1
PIN 3
Power
Control
Meter
Illumination
Control
Ground
Now you can take advantage of traditional McIntosh
standards of excellence in the MC1.2KW Power Ampli-
fier. The 1,200 watt high current output will drive any high
quality loudspeaker system to its ultimate performance.
The MC1.2KW reproduction is sonically transparent and
absolutely accurate. The McIntosh Sound is “The Sound of
the Music Itself.”
• Power Output
The MC1.2KW is a Power Amplifier with a capability
of 1,200 watts into 2, 4 or 8 ohm speakers with less than
0.005% distortion.
• Full Balanced Quad-Differential Circuitry
The MC1.2KW is fully balanced from inputs to outputs.
It consists of two matched power amplifiers operating in
push-pull with their outputs combined in a McIntosh Auto
-
former. The double balanced configuration cancels virtu-
ally all distortion.
• Balanced and Unbalanced Inputs
Balanced connections guard against induced noise and al
-
low long cable runs without compromising sound quality.
• Power Guard
The patented McIntosh Power Guard circuit prevents the
amplifier from being over driven into clipping, with its
harsh distorted sound that can also damage your valuable
loudspeakers.
• Sentry Monitor and Thermal Protection
McIntosh Sentry Monitor power output stage protection
circuits ensure the MC1.2KW will have a long and trouble
free operating life. Built-in Thermal Protection Circuits
guard against overheating.
• Patented Autoformer
McIntosh designed and manufactured Output Autoformers
provide an ideal match between the amplifier output stages
and speaker loads of 2, 4 and 8 ohms. The Autoformers
also provide perfect DC protection for your valuable loud
-
speakers.
• Special Power Supply
A regulated Power Supply, a very large Toroidal Wound
Power Transformer and very large capacitors ensures sta
-
ble noise free operation even though the power line varies.
• Illuminated Power Meter
The Illuminated Power Output Watt Meter on the
MC1.2KW is peak responding, and indicates the true
power output of the amplifier. The Peak Watt Hold Mode
allows the meter to temporarily stay at the highest power
output and then slowly decay. The Front Panel Meter Il
-
lumination may be switched Off at any time.
• Fiber Optic Solid State Front Panel Illumination
The even Illumination of the Front Panel is accomplished
by the combination of custom designed Fiber Optic Light
Diffusers and extra long life Light Emitting Diodes
(LEDs).
• Glass Front Panel and Super Mirror Chassis Finish
The famous McIntosh Illuminated Glass Front Panel and
the Stainless Steel Chassis with Super Mirror Finish en
-
sures the pristine beauty of the MC1.2KW will be retained
for many years.