Mcintosh ma6300om02 schematic

Integrated Amplifier

MA6300

Owner’s Manual

McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: [phone] FAX: [phone]

The lightning flash with arrowhead,
within an equilateral triangle, is
intended to alert the user to the
presence of uninsulated “danger­ous voltage” within the product’s
enclosure that may be of sufficient
magnitude to constitute a risk of
electric shock to persons.

The exclamation point within an
equilateral triangle is intended to
alert the user to the presence of im­portant operating and maintenance
(servicing) instructions in the litera­ture accompanying the appliance.

WARNING - TO REDUCE RISK OF

FIRE OR ELECTRICAL SHOCK, DO

NOT EXPOSE THIS EQUIPMENT TO

RAIN OR MOISTURE.

IMPORTANT SAFETY

INSTRUCTIONS!

PLEASE READ THEM BEFORE
OPERATING THIS EQUIPMENT.

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a dry cloth.

7. Do not block any ventilation openings. Install in
accordance with the manufacturer’s instructions.

8. Do not install near any heat sources such as radia­tors, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.

9. Do not defeat the safety purpose of the polarized
or grounding-type plug. A polarized plug has two
blades with one wider than the other. A ground­ing type plug has two blades and a third ground­ing prong. The wide blade or the third prong are
provided for your safety. If the provided plug does
not fit into your outlet, consult an electrician for
replacement of the obsolete outlet.

10. Protect the power cord from being walked on or
pinched particularly at plugs, convenience re­ceptacles, and the point where they exit from the
apparatus.

NO USER-SERVICEABLE PARTS

INSIDE. REFER SERVICING TO

QUALIFIED PERSONNEL.

To prevent the risk of electric shock, do not remove cover or

back. No user-serviceable parts inside.

11. Only use attachments/accessories specified by the
manufacturer.

12. Use only with the cart, stand, tripod, bracket, or
table specified by the manufacturer,
or sold with the apparatus. When a
cart is used, use caution when mov­ing the cart/apparatus combination
to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or
when unused for long periods of time.

14. Refer all servicing to qualified service person­nel. Servicing is required when the apparatus has
been damaged in any way, such as power-supply
cord or plug is damaged, liquid has been spilled or
objects have fallen into the apparatus, the appara­tus has been exposed to rain or moisture, does not
operate normally, or has been dropped.

15. Do not expose this equipment to dripping or
splashing and ensure that no objects filled with liq­uids, such as vases, are placed on the equipment.

16. To completely disconnect this equipment from the
a.c. mains, disconnect the power supply cord plug
from the a.c. receptacle.

17. The mains plug of the power supply cord shall
remain readily operable.

18. Do not expose batteries to excessive heat such as
sunshine, fire or the like.

2

Thank You

Table of Contents

Your decision to own this McIntosh MA6300 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.

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

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:

Safety Instructions ............................................................

Thank You and Please Take a Moment .............................

Technical Assistance and Customer Service ....................3

Table of Contents .............................................................. 3

General Information .........................................................3

Connector and Cable Information ....................................4

Introduction .......................................................................

Performance Features .......................................................4

Dimensions .......................................................................5

Installation ........................................................................ 6

Connections:

Rear Panel Connections .................................................... 7

How to Connect Power and Data Control ......................... 8

How to Connect Audio Components ................................ 9

How to Connect Loudspeakers ....................................... 10

How to Connect an external Power Amplifier ............... 12

Front Panel Features:

Front Panel Displays, Controls, Push-buttons and Jack . 13

Operation:

How to Operate the MA6300 .......................................... 14

Remote Control:

Remote Control Push-buttons ......................................... 16

How to Operate by Remote Control ............................... 17

Additional Information:

Specifications .................................................................. 18

Packing Instruction .........................................................19

General Information

2
3

4

McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, New York 13903
Phone: [phone]
Fax: [phone]

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: [phone]
Fax: [phone]

Copyright 2006 © by McIntosh Laboratory, Inc.

1. For additional connection information, refer to the
owner’s manual(s) for any component(s) connected to
the MA6300 Integrated Amplifier.

2. The Main AC Power going to the MA6300 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
MA6300 and other McIntosh Components are in their
Standby Power Off Mode, the Microprocessor’s Circuit­ry inside each component is active and communication
is occurring between them.

3

Connector Information, Introduction and Performance Features

Power
Control

Ground

N/C

Data
Signal

N/C

Data
Ground

PIN 2 PIN 1

PIN 3

Connector and Cable Information

XLR Connectors

Below is the Pin configuration for the XLR Balanced Input
Connectors on the MA6300. Refer to the diagram for con­nection:
PIN 1: Shield/Ground
PIN 2: + Output
PIN 3: - Output

Power Control Connector

The MA6300 Power Control Output Jack sends Power On/
Off Signals when connected to other
McIntosh Components. A 1/8 inch
stereo mini phone plug is used for con
nection to the Power Control Output
on the MA6300.

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.

Data Port Connectors

The MA6300 Data Out Ports send Remote Control Signals
to McIntosh Source Components. A 1/8
inch stereo mini phone plug is used for
connection.

-

Performance Features

• Power Output

The MA6300 consists of a 100 watts per channel stereo
Power Amplifier and a sophisticated Preamplifier in one
compact unit with less than 0.005% distortion.

• Electronic Input Switching and Balanced Input

Digital Logic integrated circuits drive Electromagnetic
switches on all seven inputs and operating functions for
reliable, noiseless, distortion free switching.
Input allows the connection of a source component using
long cable lengths, without a loss in sound quality.

• Power Guard

The patented McIntosh Power Guard circuit prevents the
amplifier from being overdriven into clipping with its
harsh distorted sound that can also damage your valuable
loudspeakers.

• Sentry Monitor and Thermal Protection

McIntosh Sentry Monitor power output stage protection
circuits ensure the MA6300 will have a long and trouble
free operating life. Built-in thermal protection circuits
guard against overheating.

• Illuminated Power Meters

The Illuminated Power Output Watt Meters on the
MA6300 are peak responding, and indicate the power out
put of the amplifier.

The Balanced

-

McIntosh Plug-In Jumper Connector

The MA6300 utilities a phono style Plug-In Jumper to con
nect the MAIN OUTPUT (Preamplifier
Output) jack to the POWER AMPlifier
INPUT jack for each channel.

Note: The Jumper Connector is available

Introduction

Now you can take advantage of traditional McIntosh stan
dards of excellence in the MA6300 Integrated Amplifier.
The Power Amplifier section of the MA6300, with a power
output of 100 watts per channel, will drive a pair of quality
loudspeakers to a high level of performance. The flexible
Preamplifier section provides connections for various input
sources and may also be used to drive an external Power
Amplifier. The MA6300 reproduction is sonically trans­parent and absolutely accurate. The McIntosh Sound is
“The Sound of the Music Itself.”

4

from the McIntosh Parts Department:

McIntosh Jumper Connector Part No. 117-781

• Power Control

­The Power Control Output connection provides convenient

Turn-On/Off of McIntosh Source Components connected
to the MA6300.

• Remote Control

The Remote Control provides control of the MA6300
operating functions and any McIntosh Source Components
connected to it.

• Special Power Supply

A regulated Power Supply and a special R-Core Power

­Transformer, ensures stable noise free operation even

though the power line varies.

• 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 MA6300 will be retained for many years.

Dimensions

17-1/2"

44.45cm

7-5/8"

19.37cm

3/16"

0.48cm

17"

43.18cm

Front View of the MA6300

Rear View of the MA6300

Side View of the MA6300

7-1/8"

18.10cm

13/16"

2.06cm

6-5/16"

16.03cm

13-1/4"

33.65cm

18-1/2"

46.99cm

17"

43.18cm

6-1/2"

16.51cm

1-1/4"

3.18cm

12-5/8"

32.07cm

3-1/32"

7.70cm

The following dimensions can assist in determining the
best location for your MA6300. There is additional in­formation on the next page pertaining to installing the
MA6300 into cabinets.

Dimensions

5

Installation

6 -5/8"

16.83cm

17-1/16"

43.34cm

Cutout Opening for Custom Mounting

MA6300 Front Panel
Custom Cabinet Cutout

Cutout

Opening

for

Ventilation

Cutout Opening for Ventilation

Support
Shelf

Cabinet
Front
Panel

Chassis
Spacers

MA6300 Side View
in Custom Cabinet

MA6300 Bottom View
in Custom Cabinet

12"

30.48cm

14"

35.56cm

15-1/16"

38.26cm

12-15/16"

32.86cm

2"

5.08cm

6"

15.24cm

Opening
for Ventilation

Note: Center the cutout Horizontally on the unit.
For purposes of clarity, the above
illustration is not drawn to scale.

2-1/2"

6.35cm

The MA6300 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 MA6300 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 MA6300 is removed from the custom
installation and
used free standing.
The required panel
cutout, ventilation
cutout and unit
dimensions are
shown.
Always provide ad­equate ventilation
for your MA6300.
Cool operation
ensures the longest
possible operating
life for any elec­tronic instrument.
Do not install the
MA6300 directly
above a heat gen­erating component
such as a high
powered amplifier.
If all the compo­nents are installed
in a single cabinet,
a quiet running
ventilation fan can
be a definite asset
in maintaining all
the system compo­nents at the coolest
possible operating
temperature.
A custom cabinet
installation should
provide the follow­ing minimum spac­ing dimensions for
cool operation.
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 obstructed. Allow 19-1/2 inches
(49.53cm) depth behind the front panel. Allow 1-1/8 inch
(2.9cm) in front of the mounting panel for knob clearance.
Be sure to cut out a ventilation hole in the mounting shelf
according to the dimensions in the drawing.

Installation

6

Rear Panel Connections

POWER CONTROL Output sends a
turn-on signal to a McIntosh Source
Component or Power Control unit
when the MA6300 is turned on

Connect the MA6300
power cord to a live
AC outlet. Refer to
information on the
back panel of your
MA6300 to determine
the correct voltage for
your unit

JUMPER PLUGS connect
the Preamplifier MAINOUT
Jacks to the POWER AMP
IN Jacks and are needed for
normal operation

SPEAKERS RIGHT
output connections
for 4 or 8 ohm
loudspeakers

SPEAKERS LEFT
output connections
for 4 or 8 ohm
loudspeakers

TAPE, TUNER, TV,
DVD and CD2 inputs
accept high level pro­gram source signals

GND terminal
accepts a ground
wire from a
turntable

Main Fuse holder,
refer to information
on the back panel
of your MA6300 to
determine the cor
rect fuse size and
rating

-

SUM DATA PORT
sends data signals
from all the Data
Ports to a McIntosh
Source Components
for control with the
MA6300 Remote
Control

DATA PORTS send
signals to McIntosh
Source Components
to allow control with
the MA6300 Remote
Control

POWER AMP
IN inputs ac­cept signals
from a separate
external Pream­plifier

TAPE OUT
sends signals
to the input
of a recording
device

MAIN OUT
sends signals to a
separate external
Power Amplifier

PHONO accepts signals
from a Moving Magnet
phono cartridge

CD1 balanced INPUTS
accept high level pro­gram source signals

7

How to Connect Power and Data Control

The MA6300 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 MA6300
Remote Control. For additional information refer to “Con­nector and Cable Information” on page 4.

1. Connect a Control Cable from the MA6300 POWER
CONTROL Jack to the Power Control In on the McIn­tosh SACD/CD Player.

2. Connect a Control Cable from the McIntosh SACD/CD
Player Power Control Out Jack to the Power Control In
jack on the McIntosh Tuner.

3. Connect a Control Cable from the MA6300 CD1 DATA
PORTS Jack to the McIntosh SACD/CD Player Data In
Jack.

How to Connect Power and Data Control

Note: If the CD2 unbalanced Audio Inputs are used instead

of the Balanced CD1 Inputs, then connect the Control
Cable to the CD2 Data Port.

4. Connect a Control Cable from the MA6300 TUNER
DATA PORT Jack to the McIntosh Tuner Data In (Tuner

1).

5. Connect any remaining McIntosh Source Components
in a similar manner.

Note: With the addition of a McIntosh Power Controller

and Remote Control Translator connected to the
MA6300, any McIntosh Classic Components and/or
non McIntosh Components connected to the MA6300
can be operated more conveniently. Contact your
McIntosh Dealer for additional information.

McIntosh SACD/CD Player

8

McIntosh Tuner

How to Connect Audio Components

1. Connect a Balanced Audio Cable from the McIntosh
SACD/CD Player Audio Outputs to the MA6300 CD1
INPUTS.

Note: The unbalanced Audio Outputs from the McIntosh

CD Player connected to the CD2 INPUTS may be
used instead of the Balanced CD1 Inputs.

2. Connect an Audio Cable from a McIntosh Tuner 1 Fixed
Outputs to the MA6300 TUNER INPUTS.

3. Connect an Audio Cable from a Turntable to the PHO­NO INPUTS and the Turntable Ground Connection to
the GND grounding post.

How to Connect Audio Components

4. Connect an Audio Cable from the MA6300 TAPE
OUTS to the Record Inputs of a Recorder and from the
MA6300 TAPE INPUTS to the Recorder Outputs.

5. Connect any remaining Source Components in a similar

manner.

McIntosh SACD/CD Player

Recorder

OUT

McIntosh Tuner

Turntable

IN

9

How to Connect Loudspeakers

Figure 1

Figure 2

Figure 3

Caution: The supplied AC Power Cord should not be

connected to the Rear Panel of the MA6300
Amplifier until after the Loudspeaker Connec­tions have been made. Failure to observe this
could result in Electric Shock. For additional
instruction on making Loudspeaker Connec­tions contact your McIntosh Dealer or McIn­tosh Technical Support.

When connecting Loudspeakers to the MA6300 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:

If your loudspeaker cables are 50 feet (38.1m) or less,
use at least 14 Gauge.
If your loudspeaker cables are 100 feet (76.2m) or less,
use at least 12 Gauge.

1. Prepare the Loudspeaker Hookup Cables that attach to
the Amplifier by choosing one of the methods below:

Bare wire cable ends:
Carefully remove sufficient insulation from the
cable ends, refer to figures 1, 2 & 3. If the cable is
stranded,
carefully
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.

Banana plug connection:
Insert the banana plug into the hole at the top of the

terminal. Refer to figure 7.

Note: Banana Plugs are for

use in the United States
and Canada only.

2. Connect the loudspeaker hookup
cables to the output terminals
that match the impedance of your
loudspeakers, being careful to
observe the correct polarities.

3. Connect the MA6300 Power Cord to a live AC outlet.

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.

10

How to Connect Loudspeakers

McIntosh Loudspeaker McIntosh Loudspeaker

+

-

-

+

To AC Outlet

11

How to Connect an external Power Amplifier

How to Connect an External Power Amplifier

The MA6300 has the ability to be connected to an exter­nal Preamplifier and/or Power Amplifier. In the example
below, the MA6300 is connected to an external McIntosh
Power Amplifier and to a McIntosh Loudspeaker with
Bi-amplifer connections. The MA6300 Power Amplifier
drives the Midrange/High Frequency Section and the ex­ternal Power Amplifier drives the Low Frequency Section
of the Loudspeaker.

1. Remove the McIntosh Jumpers connected between the
MAIN OUT and POWER AMP IN Jacks. Retain them
for future use.

2. Connect a pair of “Y” jumper adapters between the
MAIN OUT and POWER AMP IN Jacks.

3. Connect an Audio Cable from the just installed “Y”
jumper adapters to the unbalanced input jacks on the
external McIntosh Power Amplifier.

4. Connect a Control Cable from the MA6300 POWER
CONTROL Jack to the Power Control In on the McIn­tosh Power Amplifier.

5. Using the same Loudspeaker connection methods out­lined on page 10, connect the MA6300 SPEAKER Con­nections to the Midrange/High Frequency Loudspeaker
Connections. Connect the external Power Amplifier
LEFT and RIGHT OUTPUT Connections to the Loud­speaker Low Frequency Connections.

6. Connect the MA6300 Power Cord to a live AC outlet.

To AC Outlet

Midrange/
High
Frequency
Sections

-

+

Low
Frequency
Section

+

-

“Y” Adapters

McIntosh Power Amplifier
(partial view)

Midrange/
High
Frequency
Sections

+

-

Low
Frequency
Section

­+

12

Front Panel Displays, Controls, Push-buttons and Jack

Meter indicates the
Left Channel Out­put of the amplifier

LED indicates when the
Left Channel Amplifier
POWER GUARD circuit
activates

The LEDs above the
push-buttons indicate
the current source
selected.

LED indicates when the
Right Channel Amplifier
POWER GUARD circuit
activates

IR Sensor receives
commands from a
Remote Control

Indicates the
Audio Output
is Muted

Meter indicates the
Right Channel Out
put of the amplifier

Standby Power On
Indicator

-

BALANCE Control
allows adjustment of
the relative volume
balance between
channels

Connection for low
impedance dynam­ic headphones, for
private listening

Source Push-buttons
select audio signals from
seven inputs for listening

Indicates the
MONO Mode
is active

MONO Push-button
combines the Left
and Right Channel
signals for Mono­phonic Sound

Push to mute the
audio from the
Loudspeakers
(Headphones are
not affected)

VOLUME Control allows
adjustment of the listening
level for both channels

STANDBY/ON
Push-button switch­es the MA6300 ON
or OFF (Standby)
and resets the micro­processors

13

How to Operate the MA6300

Power On

The Red LED above the STANDBY/ON Push-button lights
to indicate the MA6300 is in Standby mode. To Switch
ON the MA6300, press the STANDBY/ON Push-button on
the Front Panel or the Power Push-button on the Remote
Control. The MUTE LED will light for approximately two
seconds after turn on. Refer to figures 8 and 9.

Source Selection

Select the desired source with the appropriate push-button
switch on the Front Panel or Remote Control.

Volume Control

Rotate the Front Panel VOLUME Control or use the
VOLUME Up
Control for the desired listening level.

Balance Control

Rotate the Front Panel BALANCE Control as needed to
achieve approximately equal listening volume levels in
each Loudspeaker. Rotate the BALANCE counterclock
wise to emphasize the Left Channel by reducing the level
of the Right Channel. Rotate the BALANCE clockwise to
emphasize the Right Channel by reducing the level of the
Left Channel.

 or Down Push-buttons on the Remote

-

How to Operate the MA6300

Mute

Press the MUTE Push-button on the Front Panel or Remote
Control to mute the audio in all outputs except the HEAD­PHONES and TAPE OUTPUT. The MUTE LED above the
push-button flashes to indicate that Mute is active. To un­mute the audio, press MUTE Push-button again, press the
Remote Control Volume Push-button(s) or press a Source
Push-button.

Headphones Jack

Connect a pair of dynamic headphones to the Headphones
Jack for private listening. Press the MUTE Push-button to
mute the Loudspeakers.

Note: The Headphone Output is optimized for impedances

ranging from 16 to 250 ohms.

Power Output Meters

The MA6300 Power Output Meters indicate the power
delivered to the Loudspeakers. 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.
Read the Upper Meter Scale if the Loudspeakers connect­ed to the MA6300 are of 8 Ohm Impedance and the Lower
Meter Scale if they are 4 Ohms.

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.

Note: The signals at the TAPE OUT Jacks are not affected.

Power Guard

During normal operation, the Front Panel Power Guard
Indicators will momentarily illuminate during peaks in the
audio signals. In the event the MA6300 over heats, due to
improper ventilation and/or high ambient temperature, the

14

Figure 8

internal protection circuits will activate. The Front Panel
Power Guard Indicators will continuously illuminate and
the audio will be muted. When the MA6300 has returned
to a safe operating temperature, normal operation will
resume.

How To Make A Tape Recording

1. Select the signal you wish to record with the appropriate
Source Push-button.

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, press the TAPE Push-button.

Note: The MA6300 TAPE OUTPUTS are not affected by the

VOLUME or BALANCE controls.

Reset of Microprocessors

In the unlikely event the controls of the MA6300 stop
functioning, the microprocessors can be reset by perform­ing the following:

1. Press and hold in the STANDBY/ON Push-button for
approximately five seconds.

2. When the MA6300 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 MA6300 will resume
normal operation.

Note: This can be performed with the MA6300 On or in

the Standby Mode.

How to Operate the MA6300, con’t

Figure 9

Note: For an explanation of the Remote Control Push-button

functions, refer to pages 16 and 17.

15

LED illuminates during the time a re­mote command is sent to the MA6300

Press to Power the
MA6300 ON or OFF

Remote Control Push-Buttons

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

Switches OFF the en­tire MA6300 System

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

Mutes the audio

Press to Power ON
the MA6300

Press to Power OFF
the MA6300

Selects FM Tuner Operating Func
tions and Track Selection on certain
McIntosh CD Players

-

Press to review Tuner Station Pre­sets and select certain functions on a
variety of McIntosh Components

Adjusts the volume level up or down

Selects On Screen Functions on a
variety of McIntosh Components

-

Selects a Disc Player, Music Server
or Tape Recorder Function and also
performs various functions on a
variety of McIntosh Components

Selects one of the seven
available Audio Sources

Note: Push-buttons whose function is not identified above

Selects the FF (Fast Forward) or
REWind Mode on Disc Player,
Music Server or Tape Recorder;
tunes Up or Down the AM/FM
Dial

are for use with other McIntosh Products.

16

How to use the Remote Control

How to use the Remote Control

The supplied Remote Control is capable of directly con­trolling the functions of contemporary McIntosh Source
Components connected to the MA6300. Earlier McIntosh
source components and other brand source components
can be controlled by the MA6300 Remote Control with the
addition of a McIntosh Remote Control Translator (RCT).

Note: Your McIntosh Dealer can assist you with the instal-

lation and operation of the Remote Control Translator
(RCT).

Input Source Selection

Press the appropriate Source Push-button to select the
desired program source.

Mute

Press the MUTE Push-button to mute the audio in all out

­puts except the HEADPHONES and TAPE 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
MUTE Push-button again.

Mono

Press the MONO Push-button to switch from Stereo to
Mono for Monophonic listening.

Volume

Press the Up or Down VOLUME Push-button to raise
or lower the listening volume level.

Note: The Record Signals present at TAPE OUTPUTS are not

affected by volume changes.

Pause

Press Pause Pushbutton to perform various functions
on a variety of McIntosh Components. It will also pause
the playing of a disc or tape player. The Pause Push-but­ton will also allow for quick exiting from the active menu
when in the setup mode. The Pause Push-button is also
used as an Enter Push-button with some McIntosh compo­nents

Acc On

Press ACC ON to turn the power ON to a McIntosh Disc
Player.

Acc Off

Press ACC OFF to turn the power OFF to a McIntosh Disc
Player..

Disc, Server and Tape Functions

Use these push-buttons to operate a DVD Player, CD
Player, CD Changer, Music Server or Tape Recorder.

Numbered Push-buttons

Press Push-buttons 0 through 9 to access tuner station pre
sets, tracks on discs or selections on a Music Server.

Disc and Track

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 move from station to station. Press
and hold a Channel Up or Down Push-button to move
continuously from station to station. 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.

-

17

Specifications

Specifications

Power Output

100 watts into an 8 ohm load is the minimum sine wave
continuous average power output. The output RMS voltage
is 28.3V across 8 ohms

160 watts into a 4 ohm load is the minimum sine wave
continuous average power output. The output RMS voltage
is 25.3V across 4 ohms

Output Load Impedance

8 and 4 ohms

Rated Power Band

20Hz to 20,000Hz

Total Harmonic Distortion

0.005% maximum harmonic distortion at any power level
from 250 milliwatts to rated power, 20Hz to 20,000Hz

Dynamic Headroom

1.4dB

Frequency Response

+0, -0.5dB from 20Hz to 20,000Hz
+0, -3dB from 10Hz to 100,000Hz

Preamplifier Main Output

1V for rated input (8V Maximun)

Input Impedance

High Level, 20K ohms
Phono, 47K ohms; 65pF
Power Amp In, 10K ohms

Maximum Input Signal

High Level, 8V
Phono, 90mV
Power Amplifier In, 8V

Main Output Impedance

50 ohms

Power Guard

Less than 2% THD with up to 16dB overdrive at 1,000Hz

Voltage Gain

High Level to Tape Output: 0dB
High Level to Main Output: 12dB
Phono to Main Output: 52dB

Power Requirements

100 Volts, 50/60Hz at 3.6 amps
110 Volts, 50/60Hz at 3.6 amps
120 Volts, 50/60Hz at 3.2 amps
220 Volts, 50/60Hz at 1.8 amps
230 Volts, 50/60Hz at 1.8 amps
240 Volts, 50/60Hz at 1.8 amps

Sensitivity (for rated output)

High Level, 250mV unbalanced, 500mV balanced
Phono, 2.5mV
Power Amp In, 1V

Signal To Noise Ratio (A-Weighted)

High Level, 97dB below rated output
Phono, 90dB below 10mV input
Power Amplifier, 110 below rated output

Intermodulation Distortion

0.005% maximum, if the instantaneous peak power output
is rated power or less per channel with both channels
operating for any combination of frequencies from 20Hz to
20,000Hz.

Wide Band Damping Factor

200 at 8 ohms
100 at 4 ohms

18

Note: Refer to the rear panel of the MA6300 for the correct

voltage.

Overall Dimensions

Width is 17-1/2 inches (44.45cm)
Height is 7-5/8 inches (19.37cm) including feet
Depth is 22 inches (55.88cm) including the Front Panel,
Knobs and Cables

Weight

37 pounds (16.8 kg) net, 55 pounds (24.9 kg) in shipping
carton

Shipping Carton Dimensions

Width is 25 inches (63.5cm)
Depth is 27 inches (68.6cm)
Height is 12 inches (30.5cm)

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. 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 033888 Shipping carton only
4 033887 End cap

1 033697 Inside carton only
1 033725 Top pad
1 034301 Bottom pad
1 033699 Shipping skid
2 017218 Plastic foot spacers
2 101204 #10 x 2-1/4” wood screws
2 104033 #10 x 1-3/4” flat washer

4 017937 Plastic foot
4 100159 #10-32 x 3/4” screw
4 104083 #10-7/16” Flat washer

19

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. 04098900