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McIntosh MCC301M User manual

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McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 139 3-2699 Phone: 6 7-723-3512 FAX: 6 7-724- 549
Owners
Manual
MCC301M
MCC301M Power Amplifier
2
IMPORTANT SAFETY INSTRUCTIONS!
PLEASE READ THEM BEFORE OPERATING THIS EQUIPMENT.
General:
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Warning: To reduce risk of fire or electrical shock,
do not expose this equipment to rain or moisture.
This unit is capable of producing high sound pres-
sure levels. ontinued exposure to high sound pres-
sure levels can cause permanent hearing impair-
ment or loss. User caution is advised and ear protec-
tion is recommended when playing at high volumes.
6. Disconnect this equipment when unused for long peri
ods of time.
7. Only use attachments/accessories specified by the
manufacturer.
Installation:
8. Do not block any ventilation openings. Install in accor
dance with the manufacturers instructions.
9. Do not install near any heat sources such as radiators,
heat ducts or other equipment that produce heat.
10. Do not use this equipment near water.
11. Do not expose this equipment to dripping or splashing
and ensure that no objects filled with liquids are
placed on the equipment.
12. Do not mount this product with an unstable bracket as
the equipment may fall, causing serious injury to a
person, and serious damage to the product.
onnection:
13. Route DC power cords so that they are not likely to be
pinched by items placed upon or against them, paying
particular attention to the point where they enter the
instrument.
are of Equipment:
14. Clean only with dry cloth.
15. Do not permit objects or liquids of any kind to be
pushed, spilled and/or fall into the equipment through
enclosure openings.
Repair of Equipment:
16. Refer all servicing to qualified service personnel. Ser
vicing is required when the equipment has been dam
aged in any way, such as power supply cord or plug is
damaged, liquid has been spilled or objects have fallen
into the equipment, the equipment has been exposed to
rain or moisture, does not operate normally, or has
been dropped.
17. Do not attempt to service beyond that described in the
operating instructions. All other service should be re
ferred to qualified service personnel.
18. When replacement parts are required, be sure the ser
vice technician has used replacement parts specified by
McIntosh or have the same characteristics as the origi
nal part. Unauthorized substitutions may result in fire,
electric shock, or other hazards.
19. Upon completion of any service or repairs to this prod
uct, ask the service technician to perform safety checks
to determine that the product is in proper operating
condition.
WARNING - TO REDUCE RISK OF
FIRE OR ELECTRICAL SHOCK, DO
NOT EXPOSE THIS EQUIPMENT TO
RAIN OR MOISTURE.
NO USER-SERVICEABLE PARTS
INSIDE. REFER SERVICING TO
QUALIFIED PERSONNEL.
To prevent the risk of electric shock, do not remove
bottom cover. No user serviceable parts inside.
3
1. An optional McIntosh External Subwoofer Rotary Control,
Model Number R1163, is available from your McIntosh
ealer.
2. o not connect the Amplifiers Speaker Negative Terminal
Connection directly to the Vehicle Chassis. Failure to observe
this could result in damage to your Amplifier.
3. It is advisable to place an inline fuse as close as possible to
the battery.
4. For additional connection information, refer to the owners
manual(s) for any component(s) connected to the MCC301M
Amplifier.
5. There is a built-in turn on delay which will mute the speaker
output for approximately two seconds when the amplifier is
turned on.
6. It is very important that loudspeaker cables of adequate size
be used in your music system, to ensure that there will be no
power loss or heating. If your loudspeaker cables are 25 feet
(7.62m) or less, use at least 16 Gauge wire size or larger.
7. The MCC301M Line Level OUTPUT is wired as a Y
connection with the INPUT to pass the input signals on to
additional amplifiers (keep cable lengths as short as
possible). The McIntosh MX406 Control Center is capable of
driving several additional power amplifiers with no
degradation of the signal.
8. The MCC301M can accept speaker level inputs at its Input
Jacks. Refer to the diagram for
connection.
Customer Service
Technical Assistance
Please Take A Moment
Thank You
Copyright 2001 ã by McIntosh Laboratory, Inc.
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:
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 Repair department.
For assistance on factory repair return procedure, contact
the McIntosh Repair Department at:
McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, New York 13903
Phone: 607 723 3515
Fax: 607 723 1917
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 addi
tional help concerning a suspected problem, you can re
ceive technical assistance for all McIntosh products at:
McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, New York 13903
Phone: 607 723 1545
Fax: 607 723 3636
Table of Contents
eneral Notes
(-) NEGATIVE SPEAKER OUTPUT
(+) POSITIVE SPEAKER OUTPUT
Your decision to own this McIntosh MCC301M Power
Amplifier ranks you at the very top among discriminating
music listeners. You now have The Best. The McIntosh
dedication to Quality, is assurance that you will receive
many years of musical enjoyment from this unit.
Please take a short time to read the information in this
manual. We want you to be as familiar as possible with all
the features and functions of your new McIntosh.
Safety Instructions ............................................................. 2
Thank You.......................................................................... 3
Please Take a Moment ....................................................... 3
Customer Service............................................................... 3
Table of Contents ............................................................... 3
Introduction ....................................................................... 4
Performance Features ........................................................ 4
Dimensions ........................................................................ 5
Installation ......................................................................... 6
Side Panel Cooling and Connections ................................ 7
How to Connect for Subwoofer ......................................... 8
How to Connect for Full Range ......................................... 9
Top Panel Controls, Displays and Switches .................... 10
How to Operate................................................................ 11
How to Replace the Fuses ............................................... 12
Block Diagram................................................................. 13
Specifications .................................................................. 14
Packing Instruction .......................................................... 15
4
Performance Features
Introduction
Now you can take advantage of traditional McIntosh stan
dards of excellence in the MCC301M Power Amplifier. A
300 watt high current output will drive any high quality
loudspeaker to its ultimate performance. The MCC301M
reproduction is sonically transparent and absolutely accu
rate. The McIntosh Sound is The Sound of the Music It
self.
·Power Output
The MCC301M consists of a power amplifier capable of
300 watts into 4 ohm speakers with less than 0.005% dis
tortion.
·High urrent Output
A peak output current of 50 amperes ensures that the
MCC301M will successfully drive high quality loudspeak
ers, such as McIntosh, for a truly exciting sound experi
ence.
·Equalizer and Variable rossover Filters
The one band equalizer has a center frequency that is vari
able from 40 Hz to 2,000 Hz which can be either cut or
boosted ±12db. 24dB per octave low pass filter with vari
able corner frequencies from 40Hz to 120Hz.
·Subsonic Filter
The selectable frequency Subsonic Filter prevents the am
plifier circuitry from amplifying non audible signals and
thus wasting amplifier power.
·Power Guard and Sentry Monitor
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 loud
speakers. McIntosh Sentry Monitor power output stage
protection circuit is present to ensure the MCC301M will
have a long and trouble free operating life.
·Speaker Protection
If for any reason, a DC (Direct Current) voltage appears at
the speaker output terminals, a built in circuit turns off the
amplifier power supplies to prevent damage to your valu
able loudspeakers.
·Thermal Protection with Multi-Speed ooling Fans
Built in thermal protection circuits guard against overheat
ing which could shorten the normal long life expectancy of
your McIntosh Power Amplifier. Cooling fan speed is con
trolled by temperature sensors attached to the interior of
the extruded aluminum cooling tunnel. The fans are nor
mally off. When needed, the fans will automatically switch
on, and speed is increased as needed for additional cooling.
·Fully Discrete Design
The MCC301M has a fully complimentary double bal
anced amplifier design and is identical to that found in
McIntoshs leading home amplifiers.
·Balanced Inputs with Pass Through
The Balanced Inputs cancel out interference noise that is
produced by other sources in the vehicle and can be di
rectly connected to the bridged speaker output of any head
unit. The MCC301M provides two line level outputs, for
the convenience of connecting multi amplifier systems.
·Illuminated Power Meter
The Illuminated Power Output Watt Meter on the
MCC301M is peak responding and almost ten times faster
than a professional VU meter. It also indicates the true
power output of the amplifier regardless of the loudspeaker
impedance, as both the voltage and current are measured.
·Remote Subwoofer ontrol and Line Output
The subwoofer level can be controlled via an optional ex
ternal rotary control, which can be remotely mounted in the
vehicle. A line level output is provided to drive an external
subwoofer power amplifier.
·Gold Plated Terminals
McIntosh provides gold plated input and output terminals
on the amplifiers for superior corrosion resistance. It is a
very important feature in the automotive environment.
Speaker wires to 10 AWG and DC input wires to 4 AWG
can be accommodated.
5
Dimensions
The following dimensions can assist in determining the
best location for your MCC301M. There is additional in
formation on the next page pertaining to installing the
MCC301M into your vehicle.
Dimensions
13-
21/32
"
34.69cm
Top View of the MCC301M
Side View of the MCC301M
2-
11/16
"
6.82cm
11.00"
27.94cm
11-
7/8
"
30.16cm
12-
1/2
"
31.75cm
2-
15/16
"
7.49cm
11"
27.93cm
11/32
"
10.93cm
6
Installation
Installation
It is recommended that a professional who is skilled in all
aspects of installation and operation install the MCC301M
and any associated mobile audio equipment.
Amplifier Ventilation
Always provide adequate ventilation for the MCC301M.
The amplifier requires an adequate airflow into the cooling
fans, which are located on the left side of the amplifier. The
warm air exits the amplifier through vents on the heatsinks.
See figure 1. Be sure to provide at least 1 1/2 inches clear
ance in front of the cooling fans and 1 inch clearance at the
sides of the heatsinks.
The cooling fans are controlled by temperature sensors,
attached to the interior of the tunnel. The fans are normally
off. If the program material contains sustained loud pas
sages demanding high power, the fans will turn on to in
crease cooling. If cooling is still not sufficient, additional
heating will shut down the amplifiers internal power sup
ply completely and the Power Guard LED will light. The
fans will continue to run and once normal temperatures are
restored, operation will resume.
The amplifier can be mounted vertically or horizontally
and may be located under a seat if adequate clearance is
available. The preferred installation method is to mount the
amplifier directly to the vehicle frame using the hardware
supplied with the amplifier.
It is not recommended that the amplifier be mounted
under the hood or in a location where it will be directly ex
posed to the elements. The openings in the fan housings
and heat tunnel vents can allow internal components to be
damaged by exposure to water, chemicals or any form of
road dust or debris.
Removing the Glass Panel
To access the MCC301M Controls, remove the glass panel
by removing the four hex bolts with the supplied 3/32 hex
key. See figure 2. Attach the supplied suction cup to the top
center of the glass panel and carefully raise it high enough
to put your hand under. Temporarily place the removed
glass panel in a safe place, remove the suction cup and
save it for future use.
Removing the End aps
To access the MCC301M Connecting Terminal Block, re
move the Glass Panel first (the above step) and then re
move the Phillips Screws holding the End Caps on both
sides of the amplifier and lift the end caps off. See figure 3.
Remove Top Cover Screws
Remove Top Cover Screws
Figure 2
Remove End Cap Screws
Remove End Cap Screws
Figure 3
Cool Air
Warm Air
Warm Air
Figure 1
Cool Air
7
Side Panel Cooling and Connections
Connect to the positve (+)
vehicle battery terminal
with an inline use
INPUTs or
audio cables
rom a signal
source
Controls the Power Guard
Circuit when connected to
certain McIntosh Control
Centers
Cooling Fan
Air Intake
OUTPUT Connections
or loudspeakers
SUBWOOFER OUTPUTS
supply a summed output
Receives the Ampli ier
Turn-ON signal rom a
McIntosh Control Center
Connect to the Negative (-)
vehicle battery terminal
Connector or optional
SUBwoo er REMOTE
Volume CONTROL
OUTPUTs rom the
INPUT Signal Source
or connection to an-
other Power Ampli ier
Cooling Fan
Air Intake
8
How to Connect for Subwoofer
There are many different possible Vehicle Audio System
combinations utilizing the MCC301M Power Amplifier. It
is recommended that a professional who is skilled in all
aspects of Vehicle Audio Systems assist you in the selec
tion and installation. The illustration below is just one of
the many possible combinations.
1. Connect a wire from the Control Center Amp On to the
MCC301M ON Connector on the right side of the am
plifier.
Note: All cables should be connected to the amplifier
before connecting the C power cables to the
battery.
2. Connect cables (up to 12AWG) from two loudspeakers
connected to the Amplifiers A and B OUTPUT Termi
nals, being careful to observe the correct polarities.
Note: The A and B OUTPUT Terminals are in parallel;
either A, B, or both Terminals may be connected.
Left Front
Right Front
Vehicle
Battery
+-
Fuse
McIntosh Control Center
Amp ON
McIntosh External
Subwoofer Rotary ontrol
(+) (-)
(+)
(-)
3. Connect audio cables from the Control Center Outputs
to the McIntosh Power Amplifier (Upper Range) Inputs
1 and 2.
4. Connect audio cables from the McIntosh Power Ampli
fier (Upper Range) Outputs 1 and 2 to the MCC301M
Inputs 1 and 2.
Note: The Subwoofer Output is summed from both of the
Inputs Jacks and can be remotely controlled by
connecting a cable from the SUB REMOTE
CONTROL jack to the Optional External Rotary
Control.
5. Connect the MCC301M to the vehicle battery termi
nals using size 4AWG (maximum) cables.
Note: It is advisable to place an inline fuse of a suitable
size as close as possible to the battery.
How to Connect for Subwoofer
McIntosh Power Amplifier (Upper Range)
(+)
(-)
9
Tweeter
(+)
(-)
There are many different possible Vehicle Audio System
combinations utilizing the MCC301M Power Amplifier. It
is recommended that a professional who is skilled in all
aspects of Vehicle Audio Systems assist you in the selec
tion and installation. The illustration below is just one of
the many possible combinations.
Note: In a typical installation a second MCC301M would be
needed for the Right Channel.
1. Connect a wire from the Control Center Amp On to the
MCC301M ON Connector on the right side of the am
plifier.
Note: All cables should be connected to the amplifier
before connecting the C power cables to the
battery.
Left Front
Vehicle
Battery
+-
Fuse
McIntosh Control Center
Power Guard
Amp ON
2. Connect a wire from a McIntosh Control Center with
Power Guard to the MCC301M PG Connector on the
right side of the amplifier.
3. Connect a cable (up to 12AWG) from the loudspeaker
system connected to the Amplifiers A OUTPUT Ter
minals, being careful to observe the correct polarities.
4. Connect an audio cable from the Control Center Left
Channel Output to the McIntosh Power Amplifier Input
1.
5. Connect the MCC301M to the vehicle battery termi
nals using size 4AWG (maximum) cables.
Note: It is advisable to place an inline fuse of a suitable
size as close as possible to the battery.
How to Connect for Full Range
How to Connect for Full Range
Woofer
Crossover Network
(-)
(+)
Tweeter
Midrange
Woofer
Input +
-
+
-
Midrange
(+)
(-)
+
-
+
-
1
Top Panel Controls, Display and Switches
POWER GUARD
LED lights when the
Power Guard Circuit
activates
LOW PASS FILTER FREQUENCY
Control selects the Low Frequency
Roll-O
SENSITIVITY
Input Sensitivity Control
SOURCE Switch selects
either Input 1, or 1 - 2
SUBwoo er (Sum o
Inputs 1and 2)
EQUALIZER Controls
select the FREQUENCY
and the LEVEL o Boost
or Cut at the Center Fre-
quencies
LOW PASS FILTER
Switch activates the
ilter
SUBSONIC FILTER
Switch selects the low
requency roll-o be-
low 20Hz or 28Hz; or
lat requency re-
sponse
METER indicates the
actual Power Output