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McIntosh mottagare MI128

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McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 www.mcintoshlabs.com
MI128
Eight Channel
Power Amplier
Owner’s Manual
2
2. The MI128 mutes the speaker output for approxi-
mately two seconds when first turned on.
3. Included with the MI128 and located in the
Owner’s Manual Packet are two Side Rack Mount
Brackets and screw fasteners. Below are graphic
images of the MI128 with and without the Side
Rack Mounted Brackets attached. Refer to page 5
for installing the Side Rack Mount Brackets.
4. For the best performance and safety it is impor-
tant to always attach a single Loudspeaker with
an 8 Ohm or 4 Ohm impedance to the Channel
1 - Channel 8 output terminals. Refer to “How to
Connect” pages 8 thru 11.
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 MI128.
Your decision to own this McIntosh MI128 Eight
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 2018 © 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, Switches and Selection ....6-7
Output Terminals and How to Connect .................8-13
Front Panel Displays and Push-button ...................... 14
How to Operate ......................................................... 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 MI128.
General Information
MI128 8 Channel Power Amplifier with
Side Rack Mount Brackets installed
MI128 4 Channel Power Amplifier
3
Power Control Connector
The MI128 Power Control Input receives an On/Off
signal from +5 to +12 volts. The Power Control Output
will in turn provide a +12 volt Output Signal with a
total current up to 50mA. An ad-
ditional connection is for controlling
the illumination of the MI128 Meter
Power Output Indicators. The 3.5mm
stereo mini phone plug connects to a
McIntosh Preamplifier or A/V Control Center Power
Control Output.
General Information, Connector and Cable Information, Introduction and Performance Features
Connector Information
Introduction
Performance Features
Power
Control
Meter
Illumination
Control Ground
Now you can take advantage of traditional McIntosh
standards of excellence in the MI128 Power Amplifier.
The Eight Channel Power Amplifier produces high
power output per channel and will drive quality Loud-
speakers to a high level of performance. The MI128
reproduction is sonically transparent and absolutely
accurate. The McIntosh Sound is “The Sound of the
Music Itself.”
• Power Output
The MI128 consists of Eight Power Amplifier Chan-
nels, each capable of 120 watts into 8 ohm or 150
watts into 4 ohm Loudspeakers with distortion less
than 0.025%.
• Loudspeaker Guard
The McIntosh Loudspeaker Guard Circuit prevents the
amplifier from being over driven into clipping, with
its harsh distorted sound that can damage your valu-
able Loudspeakers.
• Versatile Operation
The MI128 provides power amplification for up to
eight channels in a multi Zone Audio System.
• Unbalanced Inputs
There are eight Unbalanced Analog Audio Inputs for
all eight Power Amplifier Channels.
Digital Audio Inputs
The Digital Inputs decode PCM Signals from external
sources. The Optical Inputs process Digital Signals
from 32kHz to 192kHz with 24-Bit resolution.
5. In the event the MI128 Channels 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 13. When the MI128
has returned to a safe operating temperature, the
Channel(s) normal operation will resume.
6. If it becomes necessary to replace the Loudspeaker
Connection Plugs used on the MI128 Rear Panel,
order part number 31065800 from the McIntosh
Parts Department.
7. For additional information on the MI128 and
other McIntosh Products please visit the McIntosh
Website at www.mcintoshlabs.com.
• Sentry Monitor and Thermal Protection
McIntosh Sentry Monitor power output stage protec-
tion circuits ensure the MI128 will have a long and
trouble free operating life. Built-in Thermal Protection
circuits guard against overheating.
• Power Control
The McIntosh Power Control Circuit allows for remote
turn-on of the MI128 Power Amplifier from a McIn-
tosh A/V Control Center or Preamplifier for a single
or dual Zone System.
• Special Power Supply
A regulated Power Supply ensures stable noise free
operation even though the power line varies.
• LED Solid State Front Panel Illumination
The even Illumination of the Front Panel is accom-
plished by extra long life Light Emitting Diodes
(LEDs). The Metal and Glass Front Panel ensures the
pristine beauty of the MI128 will be retained for many
years.

Produktspecifikationer

Varumärke: McIntosh
Kategori: mottagare
Modell: MI128

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