Integrated Amplifier
MA6600
Owner’s Manual
The HD Radio Ready logo is a proprietary trademark of iBiquity Digital Corp.
McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 FAX: 607-724-0549
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Thank You
Table of Contents
Your decision to own this McIntosh MA6600 Integrated
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 possible with all
the features and functions of your new McIntosh.
Safety Instructions............................................................2
Thank You and Please Take a Moment.............................3
Technical Assistance and Customer Service....................3
Table of Contents ..............................................................3
General Information .........................................................3
Connector and Cable Information ....................................4
Introduction.......................................................................4
Performance Features .......................................................4
Dimensions .......................................................................5
Installation ........................................................................6
Rear Panel Connections....................................................7
Connecting Components...................................................8
Connection Diagrams (Separate Sheet)..............Mc1A/1B
Connecting Loudspeakers ................................................9
Remote Control Push-buttons......................................... 10
How to Operate by Remote Control ............................... 11
Front Panel Displays, Controls, Push-buttons and Jack . 12
How to Operate the MA6600 ....................................13-20
Specifications..................................................................22
Packing Instructions .......................................................23
Please Take A Moment
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: ___________________________________
Technical Assistance
General Information
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:
1. For additional connection information, refer to the
owner’s manual(s) for any component(s) connected to
the MA6600 Integrated Amplifier.
2. The Main AC Power going to the MA6600 and any
other McIntosh Component(s) should not be applied
until all the system components are connected together.
Failure to do so could result in malfunctioning of some
or all of the system’s normal operations. When the
MA6600 and other McIntosh Components are in their
Standby Power Off Mode, the Microprocessor’s Circuit-
ry inside each component is active and communication
is occurring between them.
McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, New York 13903
Phone: 607-723-1545
Fax: 607-724-0549
3. The type and availability of tuner module(s) for the
MA6600 varies from country to country. Contact your
McIntosh Dealer for additional information.
4. In the event the MA6600 Power Amplifier overheats,
due to improper ventilation and/or high ambient tem-
perature, the protection circuits will activate. The Front
Panel Power Guard LEDs will continuously indicate ON
and the audio will be muted. When the MA6600 has
returned to a safe operating temperature, normal opera-
tion will resume.
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
If the MA6600 Power Transformer overheats, the
MA6600 will switch Off and the Front Panel Output
1 and 2 LED will flash. When the Power Transformer
returns to a safe operating temperature the STANDBY/
ON Push-button will become active again.
Binghamton, New York 13903
Phone: 607-723-3515
Fax: 607-723-1917
Copyright 2008 © by McIntosh Laboratory, Inc.
3
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Connector Information, Introduction and Performance Features
Connector and Cable Information
Performance Features
XLR Connectors
• Power Output with Patented Autoformer
Below is the Pin configuration for the XLR Balanced Input The MA6600 consists of a 200 watts per channel stereo
Connectors on the MA6600. Refer to the
diagram for connection:
PIN 1: Shield/Ground
PIN 2: + Output
Power Amplifier with less than 0.005% distortion. The
McIntosh designed and manufactured Autoformer allows
connection of 2, 4 or 8 ohm Loudspeakers. The Power
Amplifier uses Thermal Trak1 Output Transistors for lower
distortion and cool operation.
PIN 3: - Output
PIN 2
PIN 3
PIN 1
• Electronic Switching and Balanced Connections
The Preamplifier uses Logic Circuits controlling Electro-
magnetic Switches on all inputs and operating functions
for reliable, noiseless, distortion free switching. There is a
Balanced Input for connection of source components.
Power Control Connector
The MA6600 Power Control Output Jack sends Power On/
Off Signals when connected to other
Power
McIntosh Components. A 1/8 inch
Control
stereo mini phone plug is used for con-
N/C
nection to the Power Control Output
• Power Guard
on the MA6600.
Ground
The patented McIntosh Power Guard circuit prevents the
amplifier clipping and protects your valuable Loudspeak-
ers.
Note: The Data and Power Control Connecting Cable is avail-
able 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.
• Multifunction Fluorescent Display
The Front Panel Display indicates source selection, volume
levels, tone adjustments, setup functions and tuner func-
tions when the optional Tuner Module2 is installed.
Data Port Connectors
The MA6600 Data Out Ports send Remote Control Signals
to McIntosh Source Components. A 1/8
• Illuminated Power Meters
The Illuminated Power Output Watt Meters on the
MA6600 are peak responding, and indicate the power out-
put of the amplifier.
Data
inch stereo mini phone plug is used for
connection.
Signal
N/C
Data
Ground
• Power Control and Remote Control
McIntosh Plug-In Jumper Connector
The MA6600 utilizes a phono style Plug-In Jumper to con-
nect the OUTPUT 1 (Preamplifier Output)
Jack to the PWR AMP (Power Amplifier
Input) Jack for each channel.
The Power Control Output connection provides convenient
Turn-On/Off of McIntosh Source Components. The Data
Ports together with the supplied Remote Control provides
control of McIntosh Source Components connected to the
MA6600.
Note: The Jumper Connector is available
from the McIntosh Parts Department:
McIntosh Jumper Connector Part No. 117-781
• Special Power Supply
The large Power Transformer, multiple filter capacitors
with 100 Jules of Energy Storage and regulated Power
Supply ensures stable noise free operation even though the
power line varies.
Introduction
Now you can take advantage of traditional McIntosh stan-
dards of excellence in the MA6600 Integrated Amplifier.
The Power Amplifier section of the MA6600, with a power
output of 200 watts per channel, will drive a pair of quality
Loudspeakers to a high level of performance. The flex-
ible Preamplifier section provides connections for various
input sources and may also be used to drive an external
Power Amplifier. The MA6600 reproduction is sonically
transparent and absolutely accurate. The McIntosh Sound
is “The Sound of the Music Itself.”
• 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). The glass Front Panel ensures the pristine beauty
of the MA6600 will be retained for many years.
1 ThermalTrak™ and ON Semiconductor are trademarks of Semicon-
ductor Components Industries, LLC
2 The type and availability of tuner module(s) for the MA6600 varies
from country to country.
4
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Dimensions
Dimensions
The following dimensions can assist in determining the
best location for your MA6600. There is additional in-
formation on the next page pertaining to installing the
MA6600 into cabinets.
17-1/2"
44.45cm
Front View of the MA6600
7 -5/8"
19.37cm
7 -1/8"
18.10cm
SOURCE: CD1
15%
12-1/4"
31.11cm
16-1/16"
40.8cm
Rear View of the MA6600
6"
15.24cm
13-1/4"
33.65cm
18-3/4"
47.63cm
16-1/2"
41.91cm
Side View of the MA6600
3/16"
0.48cm
6-1/4"
15.88cm
13/16"
2.06cm
12-5/8"
32.07cm
1"
2.54cm
5
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Installation
Installation
The MA6600 can be placed upright on a table or shelf,
standing on its four feet. It also can be custom installed
in a piece of furniture or cabinet of your choice. The four
feet may be removed from the bottom of the MA6600
when it is custom installed as outlined below. The four feet
together with the mounting screws should be retained for
possible future use if the MA6600 is removed from the
custom installation and used free standing. The required
panel cutout, ven-
Allow at least 6 inches (15.24cm) above the top, 2 inches
(5.08cm) below the bottom and 1 inch (2.54cm) on each
side of the Integrated Amplifier, so that airflow is not ob-
structed. Allow 20 inches (50.8cm) depth behind the front
panel. Allow 2-1/4 inch (5.72cm) in front of the mounting
panel for handle clearance. Be sure to cut out a ventilation
hole in the mounting shelf according to the dimensions in
the drawing.
tilation cutout and
unit dimensions are
shown.
17-1/16"
43.34cm
Always provide ad-
equate ventilation
for your MA6600.
Cool operation
MA6600 Front Panel
Custom Cabinet Cutout
6 -5/8"
16.83cm
ensures the longest
possible operating
life for any elec-
tronic instrument.
Do not install the
MA6600 directly
above a heat gen-
erating component
such as a high
powered amplifier.
If all the compo-
nents are installed
in a single cabinet,
a quiet running
SOURCE: CD1
15%
6"
Cutout Opening for Custom Mounting
15.24cm
Cabinet
Front
Panel
Opening
for Ventilation
ventilation fan can
be a definite asset
in maintaining all
the system compo-
nents at the coolest
possible operating
temperature.
MA6600 Side View
in Custom Cabinet
Cutout Opening for Ventilation
Support
Shelf
Chassis
Spacers
1"
2.54cm
A custom cabinet
installation should
provide the follow-
ing minimum spac-
ing dimensions for
cool operation.
14-1/2"
36.83cm
2"
5.08cm
MA6600 Bottom View
in Custom Cabinet
15-1/16"
38.26cm
13"
33.02cm
Cutout
Opening
for
Ventilation
Note: Center the cutout Horizontally
on the unit. For purposes of
clarity, the above illustration
is not drawn to scale.
13-5/16"
33.81cm
6
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Rear Panel Connections
Connect the MA6600
power cord to a live
AC outlet. Refer to
information on the
back panel of your
MA6600 to determine
the correct voltage for
your unit
RIGHT OUTPUT
connections for a
2, 4 or 8 ohm
CD1 Balanced IN-
PUTS accept high level
program source signals
CD2, DVD, TV, SERVER
RECord
and REC INPUTS accept
high level program source
signals
OUTPUT
sends signals
to the input
of a recording
device
loudspeaker
POWER CON-
DATA PORTS send
Reserved for the
installation of
optional Tuner
Module
LEFT OUTPUT
TROL MAIN Out-
put sends a turn-on
signal to a McIn-
tosh Component
when the MA6600
is turned On
signals to McIntosh
Source Components
to allow control with
the MA6600 Remote
Control
connections for a
2, 4 or 8 ohm
loudspeaker
Main Fuse holder,
refer to information 1 and 2 Output sends
on the back panel a turn-on signal to a
of your MA6600 to McIntosh Component
POWER CONTROL
PHONO accepts
signals from a
Moving Magnet
phono cartridge
PWR AMP
OUTPUT 1 sends signals
to the internal Power
Amplifier or a separate
external Power Ampli-
fier; OUTPUT 2 sends
signals to a separate
external Power Amplifier
input
input accepts
signals from
the internal
Preamplifier
or a separate
external Pre-
amplifier
determine the cor-
rect fuse size and
rating
when the Outputs 1
and 2 Push-buttons
are used
POWER CONTROL ACC
Output sends a turn-On,
turn-Off signal to a McIn-
tosh Component when using
the MA6600 Remote Control
ACC On/Off Push-buttons
EXT SENSOR con-
GND
terminal
accepts
a ground
wire from a
turntable
JUMPER PLUGS connect
nector permits the
connection of a Mc-
Intosh IR Sensor for
remote operation
the Preamplifier OUTPUT
1 Jacks to the PWR AMP
IN Jacks and are needed for
normal operation
7
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Connecting Components
Sensor Connections:
The MA6600 has the ability to automatically switch power
On/Off to McIntosh Source Components via the Power
Control connections. The Data Port Connections allow for
the remote operation of basic functions using the MA6600
Remote Control. With an external sensor connected to the
MA6600, remote control operation of the system is possi-
ble from another room and/or when the MA6600 is located
in a cabinet with the doors closed.
11. Connect a RG59U or RG6U Cable from the MA6600
EXT SENSOR “F” Connector to the McIntosh Sensor
“F” Connector.
Audio Connections:
12. Connect Balanced Cables from the MA6600 CD 1
INPUT Jacks to the McIntosh SACD/CD Player Fixed
Balanced Output Jacks.
13. Connect an Audio Cable from the MA6600 SERVER
INPUT Jacks to the McIntosh Music Server Output
Jacks.
14. Connect an Audio Cable from the MA6600 REC OUT-
PUT Jacks to the McIntosh Music Server Input 3 Jacks.
15. Connect Audio Cables from the MA6600 DVD INPUT
Jacks to the McIntosh Audio/Video Player Output
Jacks.
The connection instructions below, together with the
MA6600 Input and Output Connection Diagrams located
on the separate folded sheet “Mc1A/1B”, are an example of
a typical audio system. Your system may vary from this,
however the actual components would be connected in a
similar manner. For additional information refer to “Con-
nector and Cable Information” on page 4.
Power Control Connections:
16. Connect the Audio Cables coming from the Turntable
to the MA6600 PHONO INPUT Jacks.
17. Optionally, connect Audio Cables from the MA6600
OUTPUT 2 Jacks to the McIntosh Power Amplifier
(Secondary) Input Jacks.
18. Connect any additional McIntosh Components in a
similar manner, as outlined in steps 12 thru 17.
Ground Connections:
19. Connect the Ground Cable coming from the Turntable
to the MA6600 GND Binding Post.
AC Power Cords Connections:
20. Connect the MA6600 and any remaining components’
AC Power Cords to a live AC outlet as illustrated.
1. Connect a Control Cable from the MA6600 POWER
CONTROL MAIN Jack to the Power Control In on the
McIntosh Turntable.
2. Connect a Control Cable from the McIntosh Turntable
Power Control Out Jack to the McIntosh Audio/Video
Player Power Control In Jack.
3. Connect a Control Cable from the McIntosh Audio/
Video Player Power Control Out Jack to the McIntosh
SACD/CD Player Power Control In Jack.
4. Connect a Control Cable from the McIntosh SACD/CD
Player Power Control Out Jack to the McIntosh Music
Server Power Control In Jack.
5. Optionally connect a Control Cable from the MA6600
POWER CONTROL OUTPUT 2 Jack to the McIntosh
Power Amplifier (Secondary Room) Power Control In
Jack.
6. Connect any additional McIntosh Components in a
similar manner, as outlined in steps 1 thru 4.
Data Control Connections:
7. Connect a Control Cable from the MA6600 CD DATA
PORT Jack to the McIntosh SACD/CD Player Data In
Jack.
8. Connect a Control Cable from the MA6600 SERVER
DATA PORT Jack to the McIntosh Music Server Data
In Jack.
9. Connect a Control Cable from the MA6600 DVD
DATA PORT Jack to the McIntosh Audio/Video Player
Data In Jack.
10. Connect any additional McIntosh Components in a
similar manner, as outlined in steps 7 thru 10.
8
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How to Connect
Connecting Loudspeakers
Caution: The supplied AC Power Cord should not be
connected to the Rear Panel of the MA6600
Amplifier until after the Loudspeaker Connec-
tions have been made. Failure to observe this
could result in Electric Shock. For additional
instruction on making Loudspeaker Connec-
tions contact your McIntosh Dealer or McIn-
tosh Technical Support.
Spade lug or prepared wire connection:
Insert the spade lug connector or prepared section
of the cable end into the terminal side access hole,
and tighten the terminal cap until the cable is firmly
clamped into the terminal so the wires cannot slip
out. Refer to figures 4, 5 & 6.
When connecting Loudspeakers to the MA6600 it is very
important to use cables of adequate size, so there is little to
no power loss in the cables. The size is specified in Gauge
Numbers or AWG (American Wire Gauge). The smaller
the Gauge number, the larger the wire size:
Figure 4
Figure 5
Figure 6
Banana plug connection:
Loudspeaker Cable Distance vs Wire Gauge Guide
Insert the banana plug into the hole at the top of the
terminal. Refer to figures A and B.
25 feet
(7.62 meters)
or less
50 feet
(15.24 meters)
or less
100 feet
(30.48 meters)
or less
Loudspeaker
Impedance
2 Ohms
4 Ohms
8 Ohms
12AWG
14AWG
16AWG
10AWG
12AWG
14AWG
8AWG
10AWG
12AWG
Refer to the Connection Diagram located on the sepa-
rate folded sheet “Mc1B” when making Loudspeaker
Connections to the MA6600. This an example of a typical
audio system, your system may vary from this, however
the actual Loudspeakers would be connected in a similar
manner.
Note: Banana Plugs are for use in the United States
and Canada only.
1. This McIntosh MA6600 Integrated Amplifier is de-
signed for the connection of a single Loudspeaker per
amplifier channel, with an impedance of 2 ohms, 4
ohms or 8 ohms.
3. Connect the Loudspeaker hookup cables from a single
Loudspeaker to the output terminals that match the im-
pedance of the Loudspeaker1, being careful to observe
the correct polarities. Output impedance connections
of 2 ohms, 4 ohms and 8 ohms are provided. If the
Loudspeaker’s impedance is in-between the available
connections, use the nearest lower impedance connec-
tion.
Note: The remaining Loudspeaker Terminals on the
Amplifier should not be connected to another
Loudspeaker.
2. Prepare the Loudspeaker Hookup Cables that attach to
the Amplifier by choosing one of the methods below:
Bare wire cable ends:
WARNING: Loudspeaker terminals are hazardous live
and present a risk of electric shock.
Carefully remove sufficient insulation from the
cable ends,
4. Connect the MA6600 Power Cord to a live AC outlet.
refer to
figures 1,
2 & 3. If
the cable is
stranded,
carefully
1For the best performance it is important to minimize an im-
pedance mismatch. An impedance mismatch can occur when
a Loudspeaker of a given impedance rating is connected to
the MA6600 Output Terminals with a different impedance
rating. For example, a Loudspeaker with an impedance rating
of 2 Ohm is connected the MA6600 8 Ohm Output Termi-
nals. 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.
Figure 2
Figure 3
Figure 1
twist the strands together as tightly as possible.
Note: If desired, the twisted ends can be tinned with
solder to keep the strands together, or attach spade
lug and/or banana connector.
9
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Remote Control Push-Buttons
LED illuminates during the time a re-
mote command is sent to the MA6600
Press to Power the
MA6600 ON or OFF
Press MODE to switch between
Stereo and Mono Modes
Turns AC Power ON or OFF to
certain McIntosh Components when
connected via the Data Port and any
McIntosh Components connected to
the ACC Power Control Jack
Press to Power ON
the MA6600
Press to Power OFF
the MA6600
Selects Functions as a “shift” key
when used with the AM or FM push-
buttons to select Output 1 or 2
Selects FM Tuner Operating Func-
tions and Track Selection on certain
McIntosh CD Players
Switches OFF the entire
MA6600 System
Press to change bands on the op-
tional tuner module. Press to review
Tuner Station Presets with an exter-
nal McIntosh Tuner connected and
select certain functions on a variety
of McIntosh Components
Use to select tuner presets, disc
tracks or any numbered operation
Selects AM Tuner Operating Func-
tions and Disc Selection on certain
McIntosh Disc Players
Press TRIM and then the LEVEL
Push-buttons to select and adjust
various functions
Adjusts the volume level up or down
Selects On Screen Functions on a
variety of McIntosh Components
Mutes the audio
Selects a Disc Player, Music Server
or Tape Recorder Function and also
performs various functions on a
variety of McIntosh Components
Selects the FF (Fast Forward) or
REWind Mode on a Disc Player,
Music Server or Tape Recorder;
seek stations Up or Down the
AM/FM Dial
Selects one of the eight
available Audio Sources
Note: Push-buttons whose function is not identified above
are for use with other McIntosh Products.
10
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How to use the Remote Control
How to use the Remote Control
Volume
The supplied Remote Control is capable of directly con-
trolling the functions of contemporary McIntosh Source
Components connected to the MA6600 via the Data Ports.
Press the Up or Down VOLUME Push-button to raise
or lower the listening volume level.
Note: The Record Signals present at REC OUTPUTS are not
affected by volume changes.
Input Source Selection
Press the appropriate Source Push-button to select the
desired program source.
Pause
Press the Pause Pushbutton to perform various functions
on a variety of McIntosh Components. It will also pause
the playing of a disc or tape player.
Mute
Press the MUTE Push-button to mute the audio in all
outputs except the REC OUTPUT. The MUTE LED above
the push-button will flash on and off to indicate that Mute
is active. To un-mute the audio, press the MUTE Push-but-
ton again. The mute push-button is also used to activate
the special Headphone Mute Mode, refer to page 19 for
additional information.
Trim
Press the TRIM Push-button until the desire Trim func-
tion (Bass, Balance, Trim Level, Treble, etc.) appears on
the Front Panel Information display, then press the LEVEL
Up or Down Push-button to adjust the Trim setting.
Press and release the LEVEL Up or Down Push-
button to recall the last Trim Function Selected and its
current setting, additional pressing of the push-buttons will
allow adjustment of the Trim Setting.
Mono
Press the MONO Push-button to switch from Stereo to
Mono for Monophonic listening.
Note: For additional information on the Trim Functions refer
to pages 16, 17 and 18.
Disc, Server and Tape Functions
Use these push-buttons to operate a DVD Player, CD
Player, CD Changer, Music Server or Tape Recorder.
Acc On/Off
Press ACC ON to turn the power ON or ACC OFF switch-
es AC Power ON or OFF to certain McIntosh Components
when connected via the Data Port and any McIntosh Com-
ponents connected to the ACC Power Control Jack.
Numbered Push-buttons
Press Push-buttons 0 through 9 to access tuner station pre-
sets, tracks on discs or selections on a Music Server.
Amplifier Selection
Disc and Track
Press the 2nd Push-button followed by the OUTPUT 1
or 2 Push-buttons either separately or together, to control
the rear panel OUTPUTS 1, 2 which can feed signals to a
Power Amplifier or other accessory component.
Use the DISC and TRACK Push-buttons when a Disc
Player or Music Server is being used.
Tuner Push-buttons
Press the AM or FM Push-button to select the desired
broadcast band. Press and release the Channel Up or
Down Push-button to seek the next available station.
Press and hold a Channel Up or Down Push-button to
seek continuously from station to station.
Note: When an external McIntosh Tuner is connected to the
MA6600, press +10 Push-button to start the automatic
brief audition of each of the presets stored in the tuner
memory. Press +10 Push-button a second time to stop
on a station preset and exit the review process.
11
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Front Panel Displays, Controls, Push-buttons and Jack
Meter indicates the
Left Channel Out-
put of the amplifier
LED indicates when the
Left Channel Amplifier
POWER GUARD circuit
activates
LED indicates when the
Right Channel Amplifier
POWER GUARD circuit
activates
Meter indicates the
Right Channel Out-
put of the amplifier
INPUT Control al-
TRIM SELECT
INFORMATION
TRIM ADJUST/
TUNE allows
VOLUME Control
lows the selection of
various sources for
listening and record-
ing
allows selection
of various types
of audio settings.
It is also used in
the setup mode for
various functions
DISPLAY indi-
cates the Sources,
Volume, other
Audio Settings,
Operational Func-
tions and Setup
Mode Settings
allows adjustment
of the listening level
for both channels
adjustment of vari-
ous types of audio
settings and tune
in radio stations.
It is also used in
the setup mode for
various functions
SOURCE: CD1
15%
Connection for low
impedance dynamic
headphones, for
STORE/EXIT
Push-button with
indicator, used
to store various
selections and set-
tings into memory
and is used to exit
the Setup Mode
Tone BYPASS Push-
button with indicator,
when activated the
audio signal bypasses
the Tone Controls
OUTPUT 1 and 2
Push-buttons with
indicators, turn the
Loudspeakers and
Preamplifier Output 2
On or Off
private listening
IR Sensor receives
commands from a
Remote Control
MONO/SETUP Push-button
MUTE Push-button
mutes the audio from
the Loudspeakers and
Headphones
STANDBY/ON
Push-button with
indicator switches
the MA6600 ON or
OFF (Standby) and
resets the micropro-
cessors
with indicator, combines the
Left and Right Channel signals
for Monophonic Sound, used to
enter the Setup Mode and step
through the Setup Menu
12
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Setup
How to Operate the Setup Modes
Default Settings
The Default Settings Chart below indicates the Function
Name, Default Setting and the Page Number for additional
information.
Your McIntosh MA6600 has been factory configured
for default operating settings that will allow immediate
enjoyment of superb audio without the need for further
adjustments. If you wish to make changes to the factory
default settings, a Setup Feature is provided to customize
the operating settings using the Front Panel Information
Display. Refer to the MA6600 Front Panel Illustration on
the previous page while performing the following steps.
Note: If the MA6600 is currently On, proceed to step 2.
1. Press the STANDBY/ON Push-button to switch On the
MA6600. The MA6600 will go through a brief startup
intialization with the Front Panel Information Display
indicating the last used source and volume setting, this
is followed by the volume setting indication starting at
zero and then increasing to the last used volume set-
ting. Refer to
Note: When a McIntosh Tuner Module is installed into the
MA6600, additional Setup Settings will become avail-
able.
Default Settings
Function Name
MA6600
Setting
V_._ _
Page No.
13
13
14
14
15
15
15
TRIM
CD1 0.0
INPUT2 CD1
ON
INPUT
METER
DISPLAY
TRIGGER
ACCessory
3
CD1 NONE
MAIN
SOURCE: CD1
figure 1.
15%
Figure 1
2. Press the
MONO/SET-
UP Push-but-
Firmware Version
The MA6600 functionality is controlled by internal
software that is know as Firmware. The Version of the
Firmware in the MA6600 can be identified at any time by
utilizing the Setup Mode.
1. Press and hold in the MA6600 Front Panel MONO/
SETUP Push-button to enter the Setup Mode.
2. Press the MONO/SETUP Push-button until MA6600
V1.00 or higher appears. Refer to figure 2.
3. The number after the character “V” is the Firmware
number.
ton until the Front Panel Information Display indicates
MA6600 FIRMWARE V1.00 or higher. Refer to figure
2. At this time the LEDs above the MONO/SETUP and
STORE/EXIT Push-buttons will be illuminate.
MA6600
FIRMWARE V1.00
Figure 2
Note: The Front Panel Information Display will indi-
cate MA6600 Firmware V1.00 or higher for the
first time. After the first time it will display the
Setup Mode Menu item last accessed.
4. To exit the Setup Mode, press the STORE/EXIT Push-
button.
Trim Level Adjustment
3. Press the MONO/SETUP Push-button to select the
next Setup Mode Menu item, “Input Level”. With each
additional press of the MONO/SETUP Push-button
the Setup Menu will advance to the next Menu Selec-
tion. Refer to
Source Components can have slightly different volume lev-
els resulting in the need to readjust the MA6600 Volume
Control when switching between different sources. The
MA6600 allows the adjustment of levels for each of the
Source Inputs for the same relative volume. The CD1 and
SERVER Inputs are used in the following example.
Note: The range of adjustment is ± 6dB. The REC Output
Levels are unaffected by any changes in the Level Trim
Settings. The Trim adjustments made are retained in
permanent memory. They can be changed by perform-
ing a new Trim Procedure. The CD1 Input Volume
Level can serve as a reference or choose another
source frequently listened to. The reference Input
Source should be set to a Trim Level of 00.
figure 3.
SETUP: TRIM CD1 0.0
Min
4. To exit from a
specific Setup
Mode, press
||
Max
Figure 3
the STORE/EXIT Push-button. The LED above the
MONO/SETUP Push-button and STORE/EXIT Push-
button will extinguish and the Front Panel Display will
revert back to its normal display. Refer to figure 1.
1. Rotate the INPUT Control to select the CD1 Input and
adjust the VOLUME Control to the desired listening
level.
13
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Re-Title Inputs
The MA6600 provides the ability to change the default In-
put Names to match the components in your system. In the
following example the REC (Input 7) will be renamed and
appear as SAT on the Front Panel Information Display.
Notes: 1. One of the high level Inputs may be renamed to AUX
or swiched Off. If any input is switched Off its name
will no longer appear on the Front Panel Informa-
tion Display when using the INPUT Control, nor is it
accessible with the Remote Control.
2. Press the MONO/SETUP Push-button until the Setup
Mode is active. Then press the MONO/SETUP Push-
button to select the Setup Menu item “SETUP: TRIM
____ 0.0”.
Refer to
figure 4.
3. Rotate the
TRIM/SE-
SETUP: TRIM CD1 0.0
Min
||
Max
Figure 4
LECT Control until “TRIM CD1 _._” appears on the
Front Panel Information Display. If necessary, rotate
the TRIM ADJUST Control for CD1 with a setting of
“0.0”.
4. Rotate the TRIM SELECT Control until “TRIM
SERVER _._” appears on the Front Panel Informa-
tion Display.
5. Rotate the TRIM ADJUST Control until Listening
Volume Level of the SERVER Input is the same as the
CD1 Vol-
2. When a high level input is switched Off its name will
become available to the remaining high level inputs.
3. The Phono Input is designed for connection of a
turntable only and thus the title is not changeable.
However, the Phono Input may be switched Off.
4. When the Phono Input (1) is switched off the name
“Phono”may be used for another input, however an
external phono preamp would be needed to go be-
tween the turntable and the high level input “phono”
on the MA6600.
1. Press the MONO/SETUP Push-button until the Setup
Mode is active. Then press the MONO/SETUP Push-
button to select the Setup Menu item “SETUP: INPUT
NAME”. Re-
SETUP: TRIM SRVR -2.5
ume Level.
The figure 5
illustration
indicates a
Min Max
¦¦¦¦
Figure 5
SETUP: INPUT NAME
INPUT2 (CD1 ):CD1
fer to figure 6.
2. Rotate the
TRIM/SE-
-2.5dB decrease in the SERVER Level.
Note: The trim LEVEL +/ - Push-buttons on the Remote
Figure 6
Control may also be used.
6. Rotate the TRIM SELECT Control until the name of
the next Input to be adjusted is displayed.
7. Repeat steps 5 and 6 until all the Inputs with sources
connected to the MA6600 have the same relative vol-
ume levels when switching between them. Record any
changes made to the various inputs from the default
settings in the “Input Source Settings” chart below.
8. Press the STORE/EXIT Push-button to exit the Setup
Mode.
LECT Con-
trol until “INPUT7 (REC ): REC” appears on the
Front Panel
Information
Display. Refer
to figure 7.
SETUP: INPUT NAME
INPUT7 (REC ): REC
Figure 7
3. Rotate the
TRIM/TUNE Control until “INPUT7 (REC ): SAT”
appears on the
Front Panel
Information
Display. Refer
to figure 8.
SETUP: INPUT NAME
INPUT7 (REC ): SAT
Figure 8
Input Source Settings
Input
No.
Default
Name
New
Name
Trim
Trigger
4. Press the STORE/EXIT Push-button to exit the Setup
Mode.
1
2
PHONO
CD1
3
CD2
Meter Illumination On/Off
4
DVD
TV
The Front Panel Meter Illumination may be switched On or
Off. Follow the steps below to switch the Meter Illumina-
tion Off.
1. Press the MONO/SETUP Push-button until the Setup
Mode is active. Then press the MONO/SETUP Push-
button to select the Setup Menu item “SETUP: ME-
TER”.
5
6
SERVER
REC
7
―
―
―
14
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Setup, con’t
2. Rotate
the TRIM
2. Rotate the TRIM SELECT Control until “CD1 :
NONE” appears on the Front Panel Information Dis-
play. Refer to
SETUP: METER
LIGHTS: OFF
Figure 9
ADJUST
Control until
“LIGHTS:
SETUP: TRIGGER
CD1 : NONE
figure 11.
3. Rotate the
TRIM AD-
JUST Control
Figure 11
OFF” appears on the Front Panel Information Display.
Refer to figure 9.
3. Press the STORE/EXIT Push-button to exit the Setup
Mode.
until “CD1 : PC1” appears on the Front Panel Informa-
tion Display.
SETUP: TRIGGER
CD1 : PC1
Figure 12
Refer to
figure 12.
4. Press the
STORE/EXIT
Display Brightness
The Front Panel Information Display Brightness may
be changed from the default setting. The MA6600 will
remember two brightness preferences, one with the Me-
ters Illuminated and one without Meter Illumination. For
each preference there are three brightness settings for the
Information Display. The Display Brightness setting may
be varied 1 (Dim) to 3 (Bright). Follow the steps below for
reducing the Display Brightness (with the Meter Illumina-
tion On).
1. Press the MONO/SETUP Push-button until the Setup
Mode is active. Then press the MONO/SETUP Push-
button to select the Setup Menu item “SETUP: DIS-
PLAY”.
Push-button to exit the Setup Mode.
Accessory Power Control
The ACC (C) Power Control Output is reassignable from
the default setting of going ON/OFF with the MA6600
(Main), to being controlled by the Remote Control ACC
ON/OFF Push-buttons. To reassign it perform the follow-
ing:
1. Press the MONO/SETUP Push-button until the Setup
Mode is active. Then press the MONO/SETUP Push-
button to select the Setup Menu item “SETUP: ACC
TRIGGER”.
2. Rotate the TRIM ADJUST Control until “BRIGHT-
NESS: 1”
SETUP: ACC TRIGGER
ACC: MAIN
Refer to fig-
ure 13.
appears on the
Front Panel
Information
Display. Refer
to figure 10.
SETUP: DISPLAY
BRIGHTNESS: 1
Figure 10
Figure 13
2. Rotate the
TRIM AD-
JUST Control until “ACC: REMOTE” appears on the
Front Panel Information Display. Refer to figure 14.
3. Press the
Note: To change the Display Brightness preference with
Meter Illumination Off, first switch off the Meter
Illumination and change the Display Brightness
Setting.
STORE/
SETUP: ACC TRIGGER
ACC: REMOTE
Figure 14
EXIT Push-
button to exit
the Setup
Mode.
3. Press the STORE/EXIT Push-button to exit the Setup
Mode.
Power Control Triggers
The Power Control 1 and 2 Outputs are reassignable to ac-
tivate only when a given Input is selected. In the following
example, the Power Control 1 Output will be set to func-
tion as a Trigger for the CD1 Input.
1. Press the MONO/SETUP Push-button until the Setup
Mode is active. Then press the MONO/SETUP Push-
button to select the Setup Menu item “SETUP: TRIG-
GER”.
15
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How to Operate the MA6600
Power On
Trim Functions
The Red LED above the STANDBY/ON Push-button lights The MA6600 has six different
to indicate the MA6600 is in Standby mode. To Switch
ON the MA6600, press the STANDBY/ON Push-button
on the Front Panel or the Power Push-button on the Re-
mote Control. The MA6600 will go through a brief startup
initialization with the Front Panel Information Display
indicating the last used source and volume setting, this is
followed by the
Trim Selections with Adjustments.
The Trim Selections include Bal-
ance, Bass, Treble, Tone Bypass,
Input Level Matching and Meter
Illumination. The Trim Settings
are stored in memory indepen-
dently for each Input Source
Selected, the only exception being
Meter Illumination setting of On
or Off, which is the same for all
inputs.
SOURCE: CD1
volume setting
15%
Figure 15
indication starting
at zero and then
increasing to the
last used volume setting. Refer to figures 15, 17 and 18.
Note: For an explanation of the Remote Control Push-but-
ton functions, refer to pages 10 and 11.
BALANCE
Listening balance varies with
different program sources, room
acoustics and listening positions
relative to the Loudspeakers. Use
the Balance (Trim Function) as
needed to achieve approximately
equal listening volume levels in
each Loudspeaker. To adjust the
Balance perform the following:
1. Rotate the Front Panel TRIM
SELECT Control or press the
TRIM Push-button on the
Source Selection
Rotate the INPUT Control to select the desired source or
press the appropriate push-button switch on the Front Panel
or Remote Control. Refer to figures 15, 16 and 17.
Volume Control
Rotate the Front Panel VOLUME Control or use the VOL-
UME Up or
Down Push-
buttons on the
Remote Control
for the desired
SOURCE: SERVER
30%
Figure 16
Remote Control until “BAL-
ANCE 0 dB” appears on
the Front Panel Information
Display. Figure 19.
listening level. Refer to figures 15, 16 and 17.
Figure 18
SOURCE: CD1
15%
Figure 17
16
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How to Operate the MA6600
2. Rotate the
TRIM AD-
JUST Control
or press the
LEVEL + /
seconds the Information Display returns to indicate the
Source Selection and Volume Level.
BALANCE 0 dB
||
Figure 19
TREBLE
The Intensity of the High Frequencies in the music can be
increased or decreased by using the Trim Select and Trim
Adjust Controls. To make an adjustment perform the fol-
lowing:
BALANCE 50 dB
¦¦¦¦
- Push-buttons
to emphasize
the Right
¦¦¦¦¦¦
Figure 20
Channel (refer
to figure 20)
or the Left
Channel (refer
to figure 21).
1. Rotate the Front Panel TRIM SELECT Control or press
the TRIM Push-button on the Remote Control until
“TREBLE 0 dB” appears on the Front Panel Informa-
tion Display. Refer to figure 26.
2. Rotate the TRIM ADJUST Control or press the LEVEL
+ / - Push-
BALANCE 50 dB
¦¦¦¦¦¦¦¦¦¦
Figure 21
The Front Panel Display indicates the Balance changes in
steps from 0 to 50dB. After approximately 3 seconds the
Information Display returns to indicate the Source Selec-
tion and Volume Level. When the Balance is set to favor
either left or right channel, the volume number indicated
will have a “< or >” symbol on either side of the number.
Refer to figure
22. To verify the
Balance setting
without changing
it, use the TRIM
TREBLE: 0 dB
||
buttons to
Min
Max
increase (refer
to figure 27)
or decrease
(refer to figure
28) the volume
level of the
Figure 26
TREBLE: +12 dB
Min
¦¦¦¦¦¦¦¦ Max
Figure 27
SOURCE: CD1
15%>
Figure 22
high frequen-
cies.
The Front Panel
TREBLE: -12 dB
Min ¦¦¦¦¦¦¦¦
Max
Figure 28
SELECT Control or TRIM Push-button and select Balance. Display indicates
the Treble chang-
BASS
es in steps from (+)12dB to -12dB. After approximately 3
seconds the Information Display returns to the indicate the
Source Selection and Volume Level.
The Intensity of the Low Frequencies in the music can be
increased or decreased by using the Trim Select and Trim
Adjust Controls. To make an adjustment perform the fol-
lowing:
TONE ENABLE/BYPASS
1. Rotate the Front Panel TRIM SELECT Control or press
the TRIM Push-button on the Remote Control until
“BASS 0 dB” appears on the Front Panel Information
Display. Refer to figure 23.
With the Tone Bypass active, the Bass and Treble Settings
for the currently selected Input Source are electronicaly
bypassed and the LED above the BYPASS Push-button
will illuminate. When the Tone Bypass is switched Off the
2. Rotate the TRIM ADJUST Control or press the LEVEL previous settings for Bass and Treble will be restored. To
+ / - Push-
buttons to
activate Tone Bypass perform the following:
1. Rotate the Front Panel TRIM SELECT Control or press
the TRIM Push-button on the Remote Control until
“TONE BYPASS” appears on the Front Panel Informa-
tion Display.
BASS: 0 dB
||
Min
Max
increase (refer
to figure 24)
or decrease
(refer to figure
25) the volume
level of the
low frequen-
cies.
Figure 23
TONE CONTROL
BASS: +12 dB
Refer to figure
29.
2. Rotate the
CD1 : ENABLE
Figure 29
Min
¦¦¦¦¦¦¦¦ Max
Figure 24
TRIM AD-
BASS: -12 dB
JUST Control or press the LEVEL + / - Push-buttons to
activate the Tone Bypass or deactivate the Tone Bypass.
Refer to figure 30 on the next page.
The Front Panel Min ¦¦¦¦¦¦¦¦
Display indicates
the Bass changes
Max
Figure 25
in steps from (+)12dB to -12dB. After approximately 3
17
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How to Operate the MA6600, con’t
After approxi-
After approximately 3 seconds the Information Display
returns to indicate the Source Selection and Volume Level.
TONE CONTROL
CD1 : BYPASS
mately 3 seconds
the Information
Display returns
to indicate the
Figure 30
METER ILLUMINATION
The MA6600 Front Panel Meter Illumination may be
switched On or Off by performing the following:
1. Rotate the TRIM SELECT Control or press the TRIM
Push-button on the Remote Control until “METER”
appears on the Front Panel Information Display. Refer
to figure 34.
Source Selection and Volume Level.
TRIM LEVEL
The Trim Level adjustments allow for making fine adjust-
ments to the previously performed Trim Level Adjustments
(refer to the Setup Section of this Owner’s Manual on page
13). To make fine adjustment to the currently selected
Input Source perform the following:
1. Rotate the TRIM SELECT Control or press the TRIM
Push-button on the Remote Control until “TRIM
LEVEL” appears on the Front Panel Information Dis-
play. Refer to
figure 31.
2. Rotate the
TRIM AD-
JUST Control
or press the
LEVEL + / -
Push-buttons
to adjust the
volume level
from -6dB to
(+) 6dB. Refer
to figures 32
and 33.
2. Rotate the
METER
LIGHTS: ON
Figure 34
TRIM AD-
JUST Control
or press the
LEVEL + /
- Push-but-
METER
LIGHTS: OFF
Figure 35
tons to switch
On or Off the
Meter Illumi-
nation. Refer to figure 35.
TRIM LEVEL: 0.0 dB
Min
Max
||
Figure 31
After approximately 3 seconds the Information Display
returns to indicate the Source Selection and Volume Level.
Note: For information on how the Front Panel Information
Display Brightness can change with the Meter Illumi-
nation setting, refer to page 15 “Display Brigthness”.
TRIM LEVEL: -6.0 dB
¦¦¦¦¦¦¦¦
Min
Max
Figure 32
TRIM LEVEL: 6.0 dB
Min Max
Mono
¦¦¦¦¦¦¦¦
Press the Front Panel MONO Push-button or the MODE
Push-button on the Remote Control to combine left and
right stereo signals to a Monophonic signal. The LED
Figure 33
SOURCE: CD1
15%
Figure 17
18
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How to Operate the MA6600, con’t
Power Output Meters
above the MONO Push-button will illuminate. The
MA6600 will remember for each input the MONO setting.
Note: The signals at the REC OUTPUT Jacks are not af-
fected.
The MA6600 Power Output
Meters indicate the power deliv-
ered to the Loudspeakers. Refer to
figure 39. The meters respond to
all the musical information being
produced by the Amplifier. They
indicate to an accuracy of at least
95% of the power output with only
a single cycle of a 2,000Hz tone
burst.
Mute
Press the MUTE Push-button, on the MA6600 Front Panel
or on the Remote Control, to Mute the Audio in all outputs
(Output 1, Output 2 and Loudspeakers) except the REC
OUTPUT. The Front Panel Information Display will indi-
cate the Source
SOURCE: CD1
Name and the
word MUTE in
place of the actual
MUTE
Figure 36
Power Guard
During normal operation, the
Front Panel Power Guard Indica-
tors will momentarily illuminate
during peaks in the audio signals.
In the event the MA6600 over
heats, due to improper ventilation,
high ambient temperature and/or
impedance mismatch, the internal
protection circuits will activate.
The Front Panel Power Guard In-
dicators will continuously illumi-
nate and the audio will be muted.
When the MA6600 has returned
to a safe operating temperature,
normal operation will resume.
volume setting.
Refer to figure 36.
Pressing the Mute Push-button a second time or adjust-
ing the volume control (either the Front Panel or Remote
Control) will un-mute the MA6600.
If the Front Panel MUTE Push-button is pressed for
at least 3 seconds, the MA6600 will mute the OUTPUT
connectors (Output 1 and 2), yet listening with headphones
will continue until the Mute Push-button is pressed again
for 3 seconds.
SOURCE: CD1
HEADPHONE - 15%
Figure 37
The Front Panel
Information
Display will in-
dicate the Source
and Headphone
Setting. Refer to
figures 37 and 38.
SOURCE: CD1
HEADPHONE - MUTE
How To Make a Recording
1. Select the desired signal source
you wish to record by using the
Front Panel INPUT Control or the appropriate Source
Push-button on the Remote Control.
2. Adjust the record level using the recorder volume con-
trol and proceed with the recording process.
3. To listen to the playback of the program source just
recorded select the REC Input.
Figure 38
Figure 18
Headphones Jack
Connect a pair of dynamic headphones to the Headphones
Jack for private listening. Press OUTPUT 1 and/or 2 Push-
buttons to mute the Loudspeakers or use the MUTE Mode
Headphone Function outlined above.
Note: The Headphone Output is optimized for impedances
ranging from 16 to 250 ohms.
Note: The MA6600 REC OUTPUTS are not affected by the
VOLUME, BALANCE or TONE Control Settings.
Using a Separate Power Amplifier
There are two different ways to use a separate power am-
plifier with a MA6600. The first way is to use the separate
amplifier instead of the MA6600 built-in Power Amplifier.
Connect the Loudspeakers to the separate power amplifier
and remove the McIntosh Jumpers that are located between
the OUTPUTS 1 Jacks and the PWR AMP INPUT Jacks.
Refer to figure 40 on the next page.
Figure 39
19
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How to Operate the MA6600, con’t
How to Operate the MA6600, con’t
Jumpers
Using Output 2
The MA6600 has provisions for connecting an external
Power Amplifier (to drive Loudspeakers in another room)
and an external sensor for remote operation of the MA6600
from that room. With an external Power Amplifier con-
nected (as illustrated on the McIntosh Connection Diagram
separate sheet “Mc1B”), press the Front Panel OUTPUT 2
Push-button or press on the Remote Control the 2nd Push-
button followed by pressing the OUTPUT 2 Push-button to
switch On or Off the external Power Amplifier.
Figure 40
Note: The McIntosh Jumpers must be connected, between
the above mentioned jacks, when the MA6600 Internal
Power Amplifier is to be used.
Reset of Microprocessors
The second way is to use both a separate power amplifier
and the MA6600 built-in Power Amplifier. Connect one
pair of Loudspeakers to the separate power amplifier and
the second pair to the MA6600. Refer to the MA6600 Out-
put Connection Diagrams located on the separate folded
sheet “Mc1B” and figure 41 below.
In the unlikely event the controls of the MA6600 stop
functioning, the microprocessors can be reset by perform-
ing the following:
1. Press the STANDBY/ON Push-button for approximate-
ly five seconds.
2. When the MA6600 cycles On then Off, release the
STANDBY/ON Push-button.
3. When the STANDBY/ON LED is illuminated press the
STANDBY/ON Push-button, the MA6600 will resume
normal operation.
Note: This can be performed with the MA6600 On or in
the Standby Mode.
Figure 41
Resetting the MA6600 to default settings
If it becomes desirable to reset all the adjustable settings
(Setup and Trim Settings) to the factory default values,
perform the following:
Note: The MA6600 VOLUME Control will affect the sound
level of all the Loudspeakers.
SOURCE: CD1
15%
Figure 17
20
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How to Operate the MA6600, con’t
1. Press both the STORE/EXIT and OUTPUT 2 Push-
buttons until the Front Panel Display indicates “MAS-
TER RESET”
MASTER RESET
-CLEARED-
Figure 42
(refer to figure
42), then re-
lease the two
push-buttons.
2. Press the STANDBY/ON Push-button and the MA6600
21
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Specifications
Specifications
Power Output
Maximum Input Signal
200 watts is the minimum sine wave continuous average
power output per channel, both channels operating
High Level, 8V unbalanced, 16V balanced
Phono, 80mV
Power Amplifier In, 16V
Output Load Impedance
2, 4 or 8 ohms
Preamplifier Output Impedance
220 ohms
Rated Power Band
20Hz to 20,000Hz
Power Guard
Less than 2% THD with up to 16dB overdrive at 1,000Hz
Total Harmonic Distortion
0.005% maximum with both channels operating from 250
milliwatts to rated power, 20Hz to 20,000Hz
Voltage Gain
High Level to Rec Output: 0dB
High Level to Output 1 and 2: 15dB
Phono to Rec Output: 40dB
Phono to Output 1 and 2: 55dB
Power Amplifier: 29dB
Dynamic Headroom
2.0dB
Frequency Response
+0, -0.5dB from 20Hz to 20,000Hz
+0, -3dB from 10Hz to 100,000Hz
Tone Controls
Bass Control ±12dB (1dB steps) @ 30Hz
Treble Control ±12dB (1dB steps) @ 10,000Hz
Preamplifier Output 1 and 2 (for rated input)
1.4V unbalanced (8V Maximun)
Power Requirements
100 Volts, 50/60Hz at 5.2 amps
110 Volts, 50/60Hz at 4.8 amps
120 Volts, 50/60Hz at 4.4 amps
220 Volts, 50/60Hz at 2.45 amps
230 Volts, 50/60Hz at 2.35 amps
240 Volts, 50/60Hz at 2.25 amps
Standby: Less than 1 watt
Sensitivity (for rated output)
High Level, 250mV unbalanced, 500mV balanced
Phono, 2.5 mV
Power Amp In, 1.4V
Signal To Noise Ratio (A-Weighted)
High Level, 92dB below rated output
Phono, 84dB below 5mV input
Note: Refer to the rear panel of the MA6600 for the correct
voltage.
Power Amplifier, 115 below rated output
Overall Dimensions
Width is 17-1/2 inches (44.45cm)
Height is 9-7/16 inches (23.97cm) including feet
Depth is 22 inches (55.88cm) including the Front Panel,
Knobs and Cables
Intermodulation Distortion
0.005% maximum, if the instantaneous peak power is 400
watts or less per channel with both channels operating for
any combination of frequencies from 20Hz to 20,000Hz
Weight
Wide Band Damping Factor
75 pounds (34.1 kg) net, 93 pounds (42.3 kg) in shipping
carton
Greater than 40
Input Impedance
Shipping Carton Dimensions
Width is 29-1/2 inches (74.93cm)
Depth is 29 inches (73.66cm)
Height is 17 inches (43.18cm)
High Level, 20K ohms
Phono, 47K ohms; 65pF
Power Amp In, 10K ohms
22
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Packing Instructions
Packing Instructions
In the event it is necessary to repack the equipment for
shipment, the equipment must be packed exactly as shown
below. It is very important that the four plastic feet are
attached to the bottom of the equipment. Two #10 x 2-1/2
inch screws and washers must be used to fasten the unit
securely to the bottom pad and wood skid. This will ensure
the proper equipment location on the bottom pad. Failure
to do this will result in shipping damage.
Use the original shipping carton and interior parts only
if they are all in good serviceable condition. If a shipping
carton or any of the interior part(s) are needed, please
call or write Customer Service Department of McIntosh
Laboratory. Refer to page 3. Please see the Part List for the
correct part numbers.
Quantity Part Number Description
1
4
033888
033887
Shipping carton
End Cap
1
1
1
1
2
2
2
033697
033725
034301
033699
017218
401204
404033
Inner carton
Top pad
Bottom pad
Wood skid
Plastic foot (spacer)
#10 x 2-1/2 inch wood screw
#10 flat washer 1-3/4 inch
4
4
4
017937
400159
404080
Plastic foot
#10-32 x 3/4 machine screw
#10 flat washer
23
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McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, NY 13903
The continuous improvement of its products is the
policy of McIntosh Laboratory Incorporated who
reserve the right to improve design without notice.
Printed in the U.S.A.
McIntosh Part No. 04107800
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