Integrated Amplifier
MA6300
Owner’s Manual
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 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.
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
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:
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: ___________________________________
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
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:
General Information
1. For additional connection information, refer to the
owner’s manual(s) for any component(s) connected to
the MA6300 Integrated Amplifier.
McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, New York 13903
Phone: 607-723-1545
Fax: 607-724-0549
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 Circuit-
ry inside each component is active and communication
is occurring between them.
Customer Service
If it is determined that your McIntosh product is in need of
repair, you can return it to your Dealer. You can also return
it to the McIntosh Laboratory Service Department. For
assistance on factory repair return procedure, contact the
McIntosh Service Department at:
McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, New York 13903
Phone: 607-723-3515
Fax: 607-723-1917
Copyright 2006 © 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
Below is the Pin configuration for the XLR Balanced Input The MA6300 consists of a 100 watts per channel stereo
Connectors on the MA6300. Refer to the diagram for con-
nection:
Power Amplifier and a sophisticated Preamplifier in one
compact unit with less than 0.005% distortion.
PIN 1: Shield/Ground
PIN 2: + Output
PIN 3: - Output
• 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. The Balanced
Input allows the connection of a source component using
long cable lengths, without a loss in sound quality.
PIN 2
PIN 3
PIN 1
Power Control Connector
The MA6300 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
• Power Guard
nection to the Power Control Output
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.
on the MA6300.
Ground
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.
• 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.
Data Port Connectors
The MA6300 Data Out Ports send Remote Control Signals
to McIntosh Source Components. A 1/8
• Illuminated Power Meters
Data
Signal
inch stereo mini phone plug is used for
connection.
The Illuminated Power Output Watt Meters on the
MA6300 are peak responding, and indicate the power out-
put of the amplifier.
N/C
Data
Ground
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.
• Power Control
The Power Control Output connection provides convenient
Turn-On/Off of McIntosh Source Components connected
to the MA6300.
Note: The Jumper Connector is available
• Remote Control
from the McIntosh Parts Department:
The Remote Control provides control of the MA6300
operating functions and any McIntosh Source Components
connected to it.
McIntosh Jumper Connector Part No. 117-781
Introduction
• 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.
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 trans-
parent 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 MA6300 will be retained for many years.
4
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Dimensions
Dimensions
The following dimensions can assist in determining the
best location for your MA6300. There is additional in-
formation on the next page pertaining to installing the
MA6300 into cabinets.
17-1/2"
44.45cm
Front View of the MA6300
7-5/8"
19.37cm
7-1/8"
18.10cm
17"
43.18cm
Rear View of the MA6300
6-5/16"
16.03cm
13-1/4"
33.65cm
18-1/2"
46.99cm
17"
43.18cm
Side View of the MA6300
6-1/2"
16.51cm
3/16"
0.48cm
13/16"
2.06cm
1-1/4"
3.18cm
12-5/8"
32.07cm
3-1/32"
7.70cm
5
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Installation
Installation
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 togeth-
er with the mounting screws should be retained for pos-
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
sible future use if the MA6300 is removed from the custom according to the dimensions in the drawing.
installation and
used free standing.
The required panel
cutout, ventilation
cutout and unit
17-1/16"
43.34cm
dimensions are
shown.
MA6300 Front Panel
Custom Cabinet Cutout
Always provide ad-
equate ventilation
for your MA6300.
Cool operation
6 -5/8"
16.83cm
ensures the longest
possible operating
life for any elec-
tronic instrument.
Do not install the
MA6300 directly
above a heat gen-
erating component
such as a high
6"
15.24cm
Cutout Opening for Custom Mounting
Cabinet
Front
Panel
Opening
for Ventilation
powered amplifier.
If all the compo-
nents are installed
in a single cabinet,
a quiet running
MA6300 Side View
in Custom Cabinet
ventilation fan can
be a definite asset
in maintaining all
the system compo-
nents at the coolest
possible operating
temperature.
A custom cabinet
installation should
provide the follow-
ing minimum spac-
ing dimensions for
cool operation.
Cutout Opening for Ventilation
Chassis
Spacers
Support
Shelf
2-1/2"
6.35cm
12"
30.48cm
15-1/16"
38.26cm
MA6300 Bottom View
in Custom Cabinet
14"
35.56cm
Cutout
Opening
for
Ventilation
Allow at least 6
inches (15.24cm)
12-15/16"
32.86cm
2"
5.08cm
Note: Center the cutout Horizontally on the unit.
For purposes of clarity, the above
illustration is not drawn to scale.
6
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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
SPEAKERS RIGHT
output connections
for 4 or 8 ohm
TAPE, TUNER, TV,
DVD and CD2 inputs
accept high level pro-
gram source signals
loudspeakers
Connect the MA6300
JUMPER PLUGS connect
the Preamplifier MAINOUT
Jacks to the POWER AMP
IN Jacks and are needed for
normal operation
SPEAKERS LEFT
GND terminal
accepts a ground
wire from a
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
output connections
for 4 or 8 ohm
loudspeakers
turntable
SUM DATA PORT
sends data signals
POWER AMP
IN inputs ac-
cept signals
from a separate
external Pream-
plifier
TAPE OUT
sends signals
to the input
of a recording
device
PHONO accepts signals
from a Moving Magnet
phono cartridge
from all the Data
Ports to a McIntosh
Source Components
for control with the
MA6300 Remote
Control
Main Fuse holder,
refer to information
on the back panel
of your MA6300 to
determine the cor-
rect fuse size and
rating
DATA PORTS send
MAIN OUT
CD1 balanced INPUTS
accept high level pro-
gram source signals
signals to McIntosh
Source Components
to allow control with
the MA6300 Remote
Control
sends signals to a
separate external
Power Amplifier
7
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How to Connect Power and Data Control
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.
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 “Con-
nector and Cable Information” on page 4.
1. Connect a Control Cable from the MA6300 POWER
CONTROL Jack to the Power Control In on the McIn-
tosh 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.
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
McIntosh Tuner
8
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How to Connect Audio Components
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.
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 PHO-
NO INPUTS and the Turntable Ground Connection to
the GND grounding post.
McIntosh SACD/CD Player
McIntosh Tuner
Turntable
Recorder
OUT
IN
9
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How to Connect Loudspeakers
Caution: The supplied AC Power Cord should not be
connected to the Rear Panel of the MA6300
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.
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.
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.
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
Figure 2
Figure 3
Figure 1
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.
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
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How to Connect Loudspeakers
McIntosh Loudspeaker
McIntosh Loudspeaker
-
+
-
+
To AC Outlet
11
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How to Connect an External Power Amplifier
How to Connect an external Power Amplifier
The MA6300 has the ability to be connected to an exter-
nal 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 ex-
ternal 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 McIn-
tosh Power Amplifier.
5. Using the same Loudspeaker connection methods out-
lined on page 10, connect the MA6300 SPEAKER Con-
nections to the Midrange/High Frequency Loudspeaker
Connections. Connect the external Power Amplifier
LEFT and RIGHT OUTPUT Connections to the Loud-
speaker Low Frequency Connections.
6. Connect the MA6300 Power Cord to a live AC outlet.
To AC Outlet
Midrange/
High
Midrange/
High
“Y” Adapters
Frequency
Sections
Frequency
Sections
-
+
+
-
McIntosh Power Amplifier
(partial view)
Low
Low
Frequency
Section
Frequency
Section
+
-
-
+
12
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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
The LEDs above the
IR Sensor receives
commands from a
Remote Control
Indicates the
Audio Output
is Muted
push-buttons indicate
the current source
selected.
Standby Power On
Indicator
BALANCE Control
allows adjustment of
the relative volume
balance between
channels
Indicates the
MONO Mode
is active
Push to mute the
audio from the
Loudspeakers
(Headphones are
not affected)
STANDBY/ON
Push-button switch-
es the MA6300 ON
or OFF (Standby)
and resets the micro-
processors
Connection for low
Source Push-buttons
MONO Push-button
VOLUME Control allows
impedance dynam-
ic headphones, for
private listening
select audio signals from
seven inputs for listening
combines the Left
and Right Channel
signals for Mono-
phonic Sound
adjustment of the listening
level for both channels
13
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How to Operate the MA6300
How to Operate the MA6300
Power On
Mute
The Red LED above the STANDBY/ON Push-button lights Press the MUTE Push-button on the Front Panel or Remote
to indicate the MA6300 is in Standby mode. To Switch Control to mute the audio in all outputs except the HEAD-
ON the MA6300, press the STANDBY/ON Push-button on PHONES and TAPE OUTPUT. The MUTE LED above the
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.
push-button flashes to indicate that Mute is active. To un-
mute the audio, press MUTE Push-button again, press the
Remote Control Volume Push-button(s) or press a Source
Push-button.
Source Selection
Select the desired source with the appropriate push-button
switch on the Front Panel or Remote Control.
Headphones Jack
Connect a pair of dynamic headphones to the Headphones
Jack for private listening. Press the MUTE Push-button to
mute the Loudspeakers.
Volume Control
Note: The Headphone Output is optimized for impedances
Rotate the Front Panel VOLUME Control or use the
VOLUME Up or Down Push-buttons on the Remote
Control for the desired listening level.
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 connect-
ed to the MA6300 are of 8 Ohm Impedance and the Lower
Meter Scale if they are 4 Ohms.
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.
Power Guard
Mono
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
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.
Figure 8
14
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How to Operate the MA6300, con’t
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 perform-
ing 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.
Figure 9
Note: For an explanation of the Remote Control Push-button
functions, refer to pages 16 and 17.
15
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Remote Control Push-Buttons
Press to Power the
MA6300 ON or OFF
Press MODE to switch between
Stereo and Mono Modes
LED illuminates during the time a re-
mote command is sent to the MA6300
Turns AC Power ON or OFF to
certain McIntosh Components when
connected via the Data Port
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
Switches OFF the en-
tire MA6300 System
Use to select tuner presets, disc
tracks or any numbered operation
Press to review Tuner Station Pre-
sets and select certain functions on a
variety of McIntosh Components
Selects AM Tuner Operating Func-
tions and Disc Selection on certain
McIntosh Disc Players
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 Disc Player,
Music Server or Tape Recorder;
tunes Up or Down the AM/FM
Dial
Selects one of the seven
available Audio Sources
Notes: Push-buttons whose function is not identified above are for use with other McIntosh Products. The Remote Control
shipped with your MA6300 may differ from the illustration above; however, the functionality is the same.
16
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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 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).
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-but-
ton 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 compo-
nents
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.
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..
Mono
Press the MONO Push-button to switch from Stereo to
Mono for Monophonic listening.
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 pre-
sets stored in the tuner memory. Press +10 Push-button a
second time to stop on a station preset and exit the review
process.
17
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Specifications
Specifications
Power Output
Input Impedance
100 watts into an 8 ohm load is the minimum sine wave
High Level, 20K ohms
continuous average power output. The output RMS voltage Phono, 47K ohms; 65pF
is 28.3V across 8 ohms
Power Amp In, 10K ohms
160 watts into a 4 ohm load is the minimum sine wave
Maximum Input Signal
continuous average power output. The output RMS voltage High Level, 8V
is 25.3V across 4 ohms
Phono, 90mV
Power Amplifier In, 8V
Output Load Impedance
8 and 4 ohms
Main Output Impedance
50 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 harmonic distortion at any power level
from 250 milliwatts to rated power, 20Hz to 20,000Hz
Voltage Gain
High Level to Tape Output: 0dB
High Level to Main Output: 12dB
Phono to Main Output: 52dB
Dynamic Headroom
1.4dB
Power Requirements
Frequency Response
+0, -0.5dB from 20Hz to 20,000Hz
+0, -3dB from 10Hz to 100,000Hz
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
Preamplifier Main Output
1V for rated input (8V Maximun)
Note: Refer to the rear panel of the MA6300 for the correct
voltage.
Sensitivity (for rated output)
High Level, 250mV unbalanced, 500mV balanced
Phono, 2.5mV
Overall Dimensions
Power Amp In, 1V
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
Signal To Noise Ratio (A-Weighted)
High Level, 97dB below rated output
Phono, 90dB below 10mV input
Power Amplifier, 110 below rated output
Weight
37 pounds (16.8 kg) net, 55 pounds (24.9 kg) in shipping
carton
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.
Shipping Carton Dimensions
Width is 25 inches (63.5cm)
Depth is 27 inches (68.6cm)
Height is 12 inches (30.5cm)
Wide Band Damping Factor
200 at 8 ohms
100 at 4 ohms
18
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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 at-
tached 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
4
033888
033887
Shipping carton only
End cap
1
1
1
1
2
2
2
033697
033725
034301
033699
017218
101204
104033
Inside carton only
Top pad
Bottom pad
Shipping skid
Plastic foot spacers
#10 x 2-1/4” wood screws
#10 x 1-3/4” flat washer
4
4
4
017937
100159
104083
Plastic foot
#10-32 x 3/4” screw
#10-7/16” Flat washer
19
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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. 04098900
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