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General Information
1. The MI502 mutes the speaker output for approxi-
2. Included with the MI502 are two Side Rack
Mounted Brackets and screw fasteners. Refer to
page 5 for installing the Side Rack Mount Brackets.
3. For the best performance and safety it is important
to always attach a single Loudspeaker with an 8
Ohm or 4 Ohm impedance to the Right or Left
Channel output terminals. Refer to “How to
Connect” on page 8.
Note: The impedance of a Loudspeaker actually varies as
the Loudspeaker reproduces different frequencies.
As a result, the nominal impedance rating of the
Loudspeaker (usually measured at a midrange
frequency) might not always agree with the imped-
ance of the Loudspeaker at low frequencies where
the greatest amount of power is required. Contact the
Loudspeaker Manufacturer for additional informa-
tion about the actual impedance of the Loudspeaker
before connecting it to the McIntosh MI502.
4. In the event the MI502 Channel(s) over heat, due to
improper ventilation or Loudspeaker Impedance,
the protection circuits will activate. The Front
Panel Channel LED will change color and the audio
will be muted. Refer to page 9. When the MI502
has returned to a safe operating temperature,
Channel(s) normal operation will resume.
5. For additional information on the MI502 and
other McIntosh Products please visit the McIntosh
Website at www.mcintoshlabs.com.
Copyright 2022 © by McIntosh Laboratory, Inc.
Important Safety Information is supplied in a separate document “Important Additional Operation Information Guide”
Table of Contents including Figures
Introduction � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 2
General Information � � � � � � � � � � � � � � � � � � � � � � 2
Connector and Cable Information � � � � � � � � � � � 3
Performance Features� � � � � � � � � � � � � � � � � � � � � � 3
Installation � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4
Dimensions � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 4
Output Terminals � � � � � � � � � � � � � � � � � � � � � � � � � 5
Figures 1 - 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Front Panel Displays� � � � � � � � � � � � � � � � � � � � � � � 6
Rear Panel Connections � � � � � � � � � � � � � � � � � � � � 7
How to Connect Multi Channel System � � � � � � � 8
Figures 6 - 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
How to Operate � � � � � � � � � � � � � � � � � � � � � � � � � � 9
Figures 12 & 13 . . . . . . . . . . . . . . . . . . . . . . . . . 9
Specifications � � � � � � � � � � � � � � � � � � � � � � � � � � � 10
Packing Instructions � � � � � � � � � � � � � � � � � � � � � 11
Thank You from all of us at McIntosh
You have invested in a precision instrument that
will provide you with many years of enjoyment.
Please take a few moments to familiarize yourself
with the features and instructions to get the
maximum performance from your equipment.
If you need further technical assistance, please
contact your dealer who may be more familiar with
your particular setup including other brands. You
can also contact McIntosh with additional questions
or in the unlikely event of needing service.
McIntosh Laboratory, Inc�
2 Chambers Street
Binghamton, New York 13903
Technical Assistance (607) 723-3512
Fax (607) 724-0549
Customer Service (607) 723-3515
Fax (607) 723-1917
Email support@mcintoshlabs.com
Website www.mcintoshlabs.com
Please Take A Moment
For future reference, you can write down your
serial number and purchase information here. We
can identify your purchase from this information
if the occasion should arise:
Serial Number: __________________________
Purchase Date: ___________________________
Dealer Name: ___________________________
POWE R
MI5 02
2 C HANN EL
PO WER AMPL IFI ER
MI 502 with side mount brackets
Introduction
Now you can take advantage of traditional
McIntosh standards of excellence in the MI502
produces high power output per channel and will
drive quality Loudspeakers to a high level of
performance. The MI502 reproduction is sonically
transparent and absolutely accurate. The McIntosh
Sound is “The Sound of the Music Itself.”
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