Owner's Manual

2
2. The MI347 mutes the speaker output for
approximately two seconds when first turned on.
3. Included with the MI347 and located in the
Owner’s Manual Packet are two Side Rack
Mounted Brackets and screw fasteners. Refer to
page 5 for installing the Side Rack Mount Brackets.
4. For the best performance and safety it is important
to attach no more thana single Loudspeaker with
an 8 Ohm or 4 Ohm impedance to the Channel
1 - Channel 7 output terminals. Refer to “How to
Connect” pages 8 thru 13.
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 impedance of the Loudspeaker
at low frequencies where the greatest amount
of power is required. Contact the Loudspeaker
Manufacturer for additional information about
the actual impedance of the Loudspeaker before
connecting it to this Power Amplifier.
5. In the event that any one or more of the channels
overheat, 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 MI347 has returned to a
safe operating temperature, Channel(s) normal
operation will resume.
With the MI347 Amplier, 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.
Copyright 2020 © by McIntosh Laboratory, Inc.
Table of Contents
Thank You
Please Take A Moment
Technical Assistance
If at any time you have questions about your McIntosh
product, contact your McIntosh Dealer who is familiar
with your equipment and many other brands that
may be part of your system. If you or your Dealer
wish additional help concerning a suspected problem,
you can receive technical assistance for all McIntosh
products at:
McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, New York 13903
Phone: [phone]
Fax: [phone]
Customer Service
If it is determined that this unit is in need of repair,
you can return it to your Dealer. You can also return it
to the McIntosh Laboratory Service Department. For
assistance on factory repair return procedure, contact
the McIntosh Service Department at:
McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, New York 13903
Phone: [phone]
Fax: [phone]
The serial number, purchase date and McIntosh Dealer
name are important to you for possible insurance
claim or future service. The spaces below have been
provided for you to record that information:
Serial Number: _______________________________
Purchase Date: _______________________________
Dealer Name: ________________________________
Important Safety Information is supplied in a separate document “Important Additional Operation Information Guide”
Safety Instructions ..................................................... 2
(Separate Sheet) ................... Important Additional
Operation Information Guide
Thank You and Please Take a Moment ....................... 2
Technical Assistance and Customer Service .............. 2
Table of Contents ........................................................ 2
General Information ................................................... 2
Connector and Cable Information ..............................3
Introduction .................................................................3
Performance Features .................................................3
Dimensions .................................................................4
Installation ..................................................................5
Rear Panel Connections, Switches and Selection .......6
Output Terminals and How to Connect ...................7-8
How to Operate ........................................................... 8
Front Panel Displays and Push-button ........................9
Specifications ............................................................ 10
Packing Instructions ................................................. 11
1. For additional connection information, refer to the
owner’s manual(s) for any component(s) connected
to the MI347.
General Information
MI 34 7 S EV EN C H AN NE L
PO WE R AM PL IF I ER
POWE R
4
5
L C R 6 7
MI347 with Side Rack Mount Brackets installed