McIntosh MC257 Manual
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McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 www.mcintoshlabs.com
MC257
Power Amplifier
Owner’s Manual
2
Your decision to own this McIntosh MC257 Seven
Channel Power Amplifier ranks you at the very top
among discriminating music listeners. You now have
“The Best.” The McIntosh dedication to “Quality,” is
assurance that you will receive many years of musical
enjoyment from this unit.
Please take a short time to read the information in
this manual. We want you to be as familiar as pos-
sible with all the features and functions of your new
McIntosh.
Copyright 2019 © 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 McIntosh equipment and any 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: 607-723-3512
Fax: 607-724-0549
Customer Service
If it is determined that your McIntosh product 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: 607-723-3515
Fax: 607-723-1917
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 and Switch 6
...........................
Output Terminals and How to Connect ...................
7-8
Connection Diagram (Separate Sheets) ....
Mc1A-3A
Front Panel Displays and Controls ............................
10
How to Operate .........................................................
11
Technical Description ..........................................
12-15
Photos ...................................................................
16-17
Specifications ............................................................
18
Packing Instruction ...................................................
19
1. For additional connection information, refer to the
owner’s manual(s) for any component(s) connected
to the MC257.
2. The MC257 mutes the speaker output for approxi-
mately two seconds when first turned on.
3. For the best performance and safety it is important
to always match the impedance of the Loudspeaker
to the Power Amplifier connections. Refer to “How
to Connect” pages 7 and 8.
Note: The impedance of a Loudspeaker actually var-
ies 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 Manufac-
turer for additional information about the actual
impedance of the Loudspeaker before connecting
it to the McIntosh MC257.
4 In the event the MC257 over heats, due to improper .
ventilation and/or high ambient temperature, the
protection circuits will activate. The Front Panel
Power Guard LED will continuously indicate ON
and the audio will be muted. When the MC257 has
returned to a safe operating temperature, normal
operation will resume.
5. When discarding the unit, comply with local rules
or regulations. Batteries should never be
thrown away or incinerated but disposed
of in accordance with the local regulations
concerning battery disposal.
6. For additional information on the MC257 and
other McIntosh Products please visit the McIntosh
Website at www.mcintoshlabs.com.
General Information
Produkt Specifikationer
| Mærke: | McIntosh |
| Kategori: | Modtager |
| Model: | MC257 |
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