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

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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

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