McIntosh MCC406M User Manual

Power Amplifier

MCC406M

Owner’s Manual

McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 FAX: 607-724-0549

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 ducts, or other apparatus (including amplifiers) that produce heat.

9. Warning: This unit is capable of producing high

sound pressure levels. Continued exposure to high sound pressure levels can cause permanent hearing impairment or loss. User caution is advised and ear protection is recommended when playing at high volumes.

10. 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

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. Do not mount this product with an unstable bracket as

apparatus may fall, causing serious injury to a

the person, and serious damage to the product.

13. Unplug this apparatus 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 cable 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 apparatus.

Thank You

Table of Contents

Your decision to own this McIntosh MCC406M Six Channel 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.

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 ............................................................. 2

Thank You.......................................................................... 3

Please Take a Moment ....................................................... 3

Customer Service ............................................................... 3

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

Important Information ....................................................... 4

Introduction ....................................................................... 4

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

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

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

Side Panel Cooling and Connections ................................ 7

How to Connect for Six Channels ..................................... 8

How to Connect for Five Channels ................................. 10

How to Connect for Four Channels ................................. 11

How to Connect for Three Channels ............................... 12

Top Panel Controls, Displays and Switches .................... 14

How to Operate the MCC406M ...................................... 15

How to Operate in Six or Five Channel Mode ................ 16

How to Operate in Four or Three Channel Mode ............ 17

How to Replace the Fuses ............................................... 18

Block Diagram................................................................. 19

Specifications .................................................................. 22

Packing Instructions ........................................................ 23

McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903 Phone: 607-723-1545 Fax: 607-723-3636

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

Important Information

1. An optional McIntosh External Subwoofer Rotary Control, Model Number R1163, is available from your McIntosh Dealer.

2. Do not connect the Amplifier Speaker Negative Terminal Connection directly to the Vehicle Chassis. Failure to observe this could result in damage to your Amplifier.

3. For additional connection information, refer to the owner’s manual(s) for any component(s) connected to the MCC406M Amplifier.

4. There is a built-in turn on delay which will mute the speaker outputs for approximately two seconds when the amplifier is turned on.

5. 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.

6. It is advisable to place an inline fuse as close as possible to the battery.

7. The MCC406M can accept speaker level inputs at its Input Jacks. Refer to the diagram for connection.

(-) NEGATIVE SPEAKER OUTPUT

(+) POSITIVE SPEAKER OUTPUT

Introduction

Now you can take advantage of traditional McIntosh standards of excellence in the MCC406M Power Amplifier. The MCC406M has 400 watts of combined power output with high current capability from six, five, four or three channels and will drive any high quality Loudspeaker System to its ultimate performance. The MCC406M reproduction is sonically transparent and absolutely accurate. The McIntosh Sound is “The Sound of the Music Itself.”

••

High Current Output

•

••

A peak output current of 20 amperes ensures that the MCC406M will successfully drive high quality Loudspeakers, such as McIntosh, for a truly exciting sound experience.

••

Variable Crossover Filters

•

••

The 12dB per octave high pass filters have variable corner frequencies from 5Hz to 5,000Hz and 12dB per octave low pass filters with variable corner frequencies from 50Hz to 5,000Hz.

••

•

Illuminated Watt Meters

••

The MCC406M has Output Watt Meters that display the combined output in watts for all six channels. The meters respond 95% full scale to a single cycle tone burst at 2kHz. It is almost ten times faster than a professional VU meter.

••

• Power Guard and Sentry Monitor

••

All channels include the patented McIntosh Power Guard circuit that prevents the amplifier from being overdriven into clipping with its harsh distorted sound that can also damage your valuable Loudspeakers. McIntosh Sentry Monitor power output stage protection circuits are present on all channels to ensure the MCC406M 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 valuable Loudspeakers.

Performance Features

••

• Power Output

••

The MCC406M consists of six separate power amplifier channels, with four channels each capable of 50 watts and two channels each capable of 100 watts with less than

0.005% distortion.

••

• Six Bridgeable Channels

••

The MCC406M includes four 50 watt amplifier channels. Each pair of channels can be set in bridged configuration for 200 watts output into a 4 ohm Loudspeaker. The two 100 watt channels may also be bridged for 400 watts output into a 4 ohm Loudspeaker.

••

• Thermal Protection with Multi-Speed Cooling Fans

••

Built-in thermal protection circuits guard against overheating which could shorten the normal long life expectancy of your McIntosh Power Amplifier. Cooling fan speed is controlled by temperature sensors attached to the interior of the extruded aluminum cooling tunnel. The fans normally run at a quiet low speed, when needed the fans will automatically switch to a higher speed for increased cooling.

••

• Subwoofer Output Remote Control

••

An optional Subwoofer Remote Control Accessory may be connected to the MCC406M and allows varying the Subwooofer output level.

Dimensions

The following dimensions can assist in determining the best location for your MCC406M. There is additional information on the next page pertaining to installing the MCC406M into your vehicle.

Top View of the MCC406M

18-3/8"

46.66cm

15-3/16"

38.57cm

9-3/16"

23.33cm

3-3/16"

8.09cm

Dimensions

Side View of the MCC406M

11"

27.93cm

12-1/4"

31.12cm

11-13/16"

29.97cm

11/32"

10.93cm

2-15/16"

7.49cm

Installation

It is recommended that a professional who is skilled in all aspects of installation and operation install the MCC406M and any associated mobile audio equipment.

Installation

Warm Air

Amplifier Ventilation

Always provide adequate ventilation for the MCC406M. 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 clearance 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 passages demanding high power, the fans will turn-on to increase cooling. If cooling is still not sufficient, additional heating will shut down the amplifier internal power supply completely and the Power Guard LEDs 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 main 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 exposed 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 MCC406M 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.

Cool Air

Figure 1

Cool Air

Warm Air

Remove Top Cover Screws

Figure 2

Remove Top Cover Screws

Remove End Cap Screws

Figure 3

Removing the End Caps

To access the MCC406M Connecting Terminal Blocks, remove the Glass Panel first (the above step) and then remove the Phillips Screws holding the End Caps on both sides of the amplifier and lift the end caps off. See figure 3.

Remove End Cap Screws

Side Panel Cooling and Connections

Cooling Fan Air Intake

Connect to the Negative (-) vehicle battery terminal

INPUTs for audio cables from a signal source

Connect to the positve (+) vehicle battery terminal with an inline fuse

Receives the Amplifier Turn-ON signal from a McIntosh Control Center

Cooling Fan Air Intake

Connector for optional Subwoofer Remote Volume Control

OUTPUT Connections for 2, 4 or 8 ohm loudspeakers

Controls the Power Guard Circuit when connected to certain McIntosh Control Centers

How to Connect for Six Channels

1. Connect a cable from the Control Center Amp On to the MCC406M ON Connector on the right side of the amplifier.

Note: All cables should be connected to the amplifier

before connecting the DC power cables to the battery.

2. Connect a cable from a McIntosh Control Center with Power Guard to the MCC406M PG Connector on the right side of the amplifier.

3. Connect cables (up to 12 AWG) from six separate Loudspeaker Drivers to the MCC406M Power Amplifier Channels 1, 2, 3, 4, 5 and 6 Terminals, being careful to observe the correct polarities.

4. Connect a cable (up to 12 AWG) from the Subwoofer Loudspeaker Driver to the McIntosh Mono Power Amplifier Output Terminals, being careful to observe the

Left Front Output

Power Guard

Amp ON

correct polarities.

5. Connect audio cables from the Control Center Front Outputs to the McIntosh Electronic Crossover Inputs 1 and 2.

6. Connect audio cables from the McIntosh Electronic Crossover Low, Mid and High Outputs 1 and 2 to the MCC406M Power Amplifier Inputs 1, 2, 3, 4, 5 and 6.

7. Connect an audio cable from the McIntosh Electronic Crossover Sub Output to the McIntosh Mono Power Amplifier Input.

8. Connect the MCC406M to the vehicle battery terminals using size 4 AWG (Maximum) cables.

Note: It is advisable to place an in-line fuse of a suitable

size as close as possible to the battery.

McIntosh Electronic Crossover

Right Front Output

Vehicle Battery

Fuse

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