McIntosh C-39 Owners manual

C39

AUDIO/VIDEO

CONTROL

CENTER

C39

AUDIO/VIDEO

CONTROL

CENTER

IMPORTANT SAFETY INSTRUCTIONS

THESE INSTRUCTIONS ARE TO PROTECT YOU AND THE MclNTOSH INSTRUMENT. BE SURE TO FAMILIARIZE YOURSELF WITH THEM

Copyright 1993 © by Mcintosh Laboratory Inc.

1.Read all instructions - Read the safety and operating instructions before operating the instrument.

2.Retain Instructions - Retain the safety and operating instructions for future reference.

3.Heed warnings - Adhere to warnings and operating instructions.

4.Follow Instructions - Follow all operating and use instructions.

W A R N I N G : TO REDUCE RISK O F FIRE OR ELECTRICAL SHOCK, D O NOT EXPOSE THIS INSTRUMENT TO RAIN OR MOISTURE.

5.Power Sources - Connect the power supply only to the type described in the operating instructions or as marked on the unit.

6.Power-Cord Protection - Route power-supply cords so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the instrument.

7.Ventilation - Locate the instrument for proper ventilation. For example, the instrument should not be placed on a bed, sofa, rug, or similar surface that may block ventilation openings; or, placed in a built-in installation, such as a bookcase or cabinet, that may impede the flow of air through the ventilation openings.

8.Heat - Locate the instrument away from heat sources such as radiators, heat registers, stoves, or other appliance (including amplifiers) that produce heat.

9.Wall or Cabinet Mounting - Mount the instrument in a wall or cabinet only as described in the owner's manual.

10.Water and Moisture - Do not use the instrument near water - for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, etc.

11.Cleaning - Clean the instrument by dusting with a dry cloth. Clean the panel with a cloth moistened with a window cleaner.

12.Object and Liquid Entry - Do not permit objects to fall and liquids to spill into the instrument through enclosure openings.

13.Nonuse Periods - Unplug the power cord from the AC power outlet when left unused for a long period of time.

14.Damage Requiring Service - Service must be performed by qualified service personnel when: A. The power supply cord or the plug has been damaged; or

B.Objects have fallen, or liquid has been spilled into the instrument; or C. The instrument has been exposed to rain; or

D.The instrument does not appear to operate normally or exhibits a marked change in performance;

or

E. The instrument has been dropped, or the enclosure damaged.

15.Servicing - Do not attempt to service beyond that described in the operating instructions. All other service should be referred to qualified service personnel.

16.Grounding or Polarization - Do not defeat the inherent design features of the polarized plug. Nonpolarized line cord adaptors will defeat the safety provided by the polarized AC plug.

17.CAUTION: TO PREVENT ELECTRICAL SHOCK DO NOT USE THIS (POLARIZED) PLUG

WITH AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE.

ATTENTION: POUR PREVENIR LES CHOCS ELECTRIQUES PAS UTILISER CETTE

FICHE POLARISEE AVEC UN PROLONGATEUR, UNE PRISE DE COURANT OU UNE AUTRE SORTIE DE COURANT, SAUF SI LES LAMES PEUVENT ETRE INSEREES A FOND SANS EN LAISSER AUCUNE PARTIE A DECOUVERT.

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.

CAUTION: TO PREVENT THE RISK OF ELECTRIC SHOCK, DO NOT

REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED PERSONNEL.

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: 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.

2

Your decision to own this piece of Mcintosh Stereo Equipment 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 thousands of hours 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 piece of Mcintosh. This will en-

sure that you receive all the performance benefits this	instrument can offer you, and that
it will become a highly valued part of your home music	system.

The serial number, purchase date, and Mcintosh Laboratory Service Contract number are important to you for possible insurance claim or future service. Record this information here.

THANK YOU

Serial Number		Purchase Date

Service Contract Number

Upon application, Mcintosh Laboratory provides a Service Contract to the original purchaser. Your Mcintosh Authorized Service Agency can expedite repairs when you provide them with the Service Contract.

SERVICE CONTRACT	4
INTRODUCTION	5, 6
HOW TO INSTALL THE C39	6
HOME THEATER AUDIO CHANNEL CONFIGURATION WITH
DOLBY PRO LOGICTM AND HOME THX® AUDIO	7
FRONT PANEL CONTROLS, SWITCHES AND PUSHBUTTONS	8, 9, 10, 11, 12, 13
C39 HAND HELD REMOTE CONTROLLER	13, 14, 15
THE REAR PANEL AND HOW TO MAKE CONNECTIONS	15, 16, 17, 18, 19, 20, 21
HOW TO SET UP YOUR MclNTOSH HOME THEATER	21, 22
HOME THEATER LAYOUT	23
HOME THEATER HOOKUP	24
MclNTOSH HOME THEATER SURROUND SOUND
VOLUME LEVEL CALIBRATION	25, 26, 27, 28
SPECIFICATIONS	29, 30
CUSTOM INSTALLATION DRAWING	31
FOLD-OUT DRAWINGS OF FRONT AND BACK PANELS OF C39	32

TABLE OF CONTENTS

3

MclNTOSH THREE YEAR SERVICE CONTRACT

TAKE ADVANTAGE OF 3 YEARS OF CONTRACT SERVICE. . .

FILL IN THE APPLICATION NOW.

Your C39 Audio/Video Control Center will give you many years of satisfactory performance. If you have any questions, please contact,

Mcintosh Laboratory Inc.

2 Chambers Street

Binghamton, New York 13903-2699

Phone: [phone]

An application for A THREE YEAR SERVICE CONTRACT is included with this manual. The terms of the contract are:

1.If the instrument covered by this contract becomes defective, Mcintosh will provide all parts, materials, and labor needed to return the measured performance of the instrument to the original performance limits free of any charge. The service contract does not cover any shipping costs to and from the authorized service agency or the factory.

2.Any Mcintosh authorized service agency will repair all Mcintosh instruments at normal service rates. To receive the free service under the terms of the service contract, the service contract certificate must accompany the instrument when taken to the service agency.

3.Always have service done by a Mcintosh authorized service agency. If the instrument is

modified or damaged as a	result	of unauthorized repair	the service contract will be cancell-
ed. Damage by improper	use or	mishandling is not	covered by the service contract.

4.The service contract is issued to you as the original purchaser. To protect you from misrepresentation this contract cannot be transferred to a second owner.

5.Units in operation outside the United States and Canada are not covered by the Mcintosh Factory Service Contract, irrespective of the place of purchase. Nor are units acquired outside the USA and Canada, the purchasers of which should consult with their dealer to ascertain what, if any, service contract or warranty may be available locally.

4

Mcintosh Laboratory has earned a world wide reputation for the technical superiority of its contributions to high quality sound reproduction. The advanced level of Mcintosh product innovations has integrity proven by time. The legendary reliability of Mcintosh products is a matter of record since 1949. The "Classic Mcintosh" design is acknowledged as the most outstanding in the audio industry.

Mcintosh products are designed to be maximum "User Friendly". Anyone can enjoy using them. Ease of maintenance is another Mcintosh design philosophy that contributes to the long useful operating life of all Mcintosh products.

The C39, Audio/Video Control Center is a full featured remote control center for a complete Mcintosh Home Theater System. It provides six audio channels with the added features of video switching.

The C39 includes all the required Dolby Pro Logic™ decoding circuits to reproduce Dolby Surround™ encoded movie soundtracks.

You also can enjoy the enhanced movie sound track reproduction possible from Home THX® Audio processing circuits by having your Mcintosh dealer install the optional Mcintosh THX-M Module in your C39. The Home THX©; Audio System is a licensing program of Lucasfilm Ltd., which defines new technologies and quality standards for accuracy in home theaters. The C39 includes a built-in noise generator and the controls necessary for accurate volume level calibration of all six channels when setting up a home theater.

The C39 has the added feature of the Mcintosh designed "HALL" signal processing circuits. The "HALL" feature allows you to enhance the realism of two channel program sources such as a compact disc. The Left and Right signals are reproduced through the Left and Right Front loudspeakers. The same signals are combined and fed to the center channel loudspeaker as mono center fill. The combined left and right are also fed to a digital processor with variable time delay for the surround loudspeakers. If a subwoofer is used in the system, it will also operate in the "HALL" mode.

The C39 includes a 25 pin connector on the rear panel to accommodate a single subminiature " D " computer type cable which fits a similar connector on a Mcintosh MC7106 six channel power amplifier. This cable carries all six audio signals and AC power control to the MC7106 for a complete Mcintosh Home Theater System.

The C39 has built-in capability for remotely controlling two separate listening areas. The LISTEN signals are defined as Area "A" which is usually the main area where all the equipment is located. The RECORD signals are available at a pair of outputs marked " B " , and can be used for a remote area with its own dedicated power amplifier and pair of speakers. The desired program can be selected in Area " B " with the HR39 Hand Held Remote Controller transmitting to a wall mounted IR sensor, or from a WK-1 keypad.

Data ports are provided for twelve audio and video remote controlled accessories. This feature allows you to control a compatible unit by transmitting with its hand held remote controller directly to a C39 sensor. Another data port connects to the optional Mcintosh HC-1 Home Controller to allow control of accessories or appliances.

The optional Model RCT-1, Remote Control Translator is also available to interconnect with the C39. The RCT-1 is a learning device which will allow the C39 to remotely control other brands of products.

The convenience of C39 remote control operation is enhanced by its capability to directly interface with the Mcintosh CR10 Remote Control System. The CR10 can add an additional four remote areas of control.

The C39 includes twelve pairs of high level audio inputs. Seven inputs are for all the tradi-

INTRODUCTION

5

tional audio program sources. A pair of low level inputs is included for a moving magnet phono

INTRODUCTION	cartridge. Six of the audio inputs are for the audio portion of an audio/video signal. Six match-
	ing standard and S Video inputs are also included. The C39 will simultaneously switch the
	six video and corresponding audio signals.
	The C39 uses digital Logic integrated circuits to drive Electromagnetic Switches for all in-
	put, output and operating functions. This is the most reliable and distortion free switching
	available.
	Separate Record and Listen circuits allow recording from one source while listening to
	another with audio or audio/video signals. A continuously variable Active Loudness control
	allows loudness compensation to be selected for any setting of the volume control. The
	Loudness control circuit elements are removed from the circuit path when the control is in
	the flat or fully counterclockwise position.
	Bass and Treble tone controls provide 12dB of boost or cut. At the center "Flat Response"
	or detent position of the tone controls, all tone control circuit elements are removed from the
	signal path. Other features include a precision digital driven six channel volume control, front
	panel digital volume level indicator and Balanced outputs for the Left and Right output signals.
	Front panel Camcorder inputs and a headphone output are also provided. These connec-
	tions are hidden behind a motor driven door which is opened and closed by a convenient
	front panel Access pushbutton. The Mcintosh C39 "Classic Mcintosh" all glass front panel
	has all control, switch and pushbutton nomenclature illuminated.
	The Mcintosh Home THX Audio licensed C39 Audio/Video Control Center, MC7106 six chan-
	nel power amplifier and a set of Mcintosh HT Series Home Theater loudspeakers will make
	a perfect "Mcintosh Quality" Home Theater system. Your Mcintosh dealer can assist you
	in setting up all the various components of your Mcintosh Home Theater to ensure you will
	receive the best possible performance.
	DOLBY SURROUND,	PRO LOGIC and the Double-D Symbol are trademarks of Dolby Licensing Laboratory.
	Home THX®Audio is	a registered trademark of Lucasfilm Ltd.

HOW TO INSTALL THE C39

The C39 can be placed upright on a table or shelf, standing on its own plastic feet. It can also be installed in an optional Mcintosh L74 equipment cabinet. Follow the mounting instructions enclosed with the L74 cabinet.

The C39 can be custom installed in a piece of furniture or cabinet of your choice. The required panel cutout and unit dimensions are shown on Page 31 of this manual.

Always provide adequate ventilation for your C39, even though it develops very little heat. Cool operation insures the longest possible operating life for any electronic instrument. Do not install your C39 directly above a heat generating component such as a high powered amplifier. In a system stack, the power amplifier should always be at the top. 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 their coolest possible operating temperatures.

A custom cabinet installation should provide the following recommended minimum spacing dimensions for cool operation. Allow at least 1 1/2 inches (3.8cm) above the unit so airflow is not obstructed. Allow 17 1/2 inches (44.5cm) depth behind the mounting panel, which includes clearance for connectors. Allow 1-1/8 inches (2.9cm) in front of the mounting panel for knob clearance.

6

All	movies produced by major film	companies have Dolby Stereo soundtracks.					When		they
reach you via home video sources,		the Dolby Surround encoding remains intact.					Dolby		Pro
Logic relies on the same decoding		technology as the professional cinema processors to
decode the movie sound tracks that are found on video.				The decoding process		results		in	four
separate sound tracks which are Left		Front, Center,	Right		Front, and Surround.		The	Dolby
Pro	Logic decoded surround signals	are monaural,	but	are	reproduced by a	non-directional

loudspeaker on each side of the listening area to help diffuse the sound. The Dolby Surround

concept is the heart of the Home Theater audio

and video experience.

Dolby Surround encoding is also used for MTS

and satellite broadcasts as well as other

audio-only program sources such as compact discs.

Use

the C39 CINEMA

1 mode

with its

Dolby Pro Logic processing to enjoy listening to

these

other

program sources.

Home

THX Audio

circuits further process all the

Dolby Pro Logic decoded signals including

the

generation

of separate spatially

expanded left and

right

surround signals.

Home

THX Audio

also

specifies

that a subwoofer be used. A Home

THX Audio system

therefore

requires six

discrete

audio

channels

and

six

corresponding

loudspeakers.

The C39 provides six

audio channels to take full advantage of the

exciting sound reproduc-

tion

capabilities of a

Dolby Surround encoded movie

sound track.

When

the

Mcintosh

THX-M

module is installed in

the C39 the audio enhancements possible

by

Home

THX Audio

signal

processing also will be available.

Descriptions

of the

functions of each channel of a

Dolby Surround soundtrack

as

decoded

by Dolby

Pro

Logic and

the addition

of Home

THX Audio processing

will assist you

in

better

understanding

the use of the

various

controls,

switches and operating

procedures of your C39.

DOLBY SURROUND LEFT FRONT and RIGHT FRONT

These two channels are stereo channels in the traditional sense. The left and right signals provide ambience, depth and spaciousness for reproduction of music and sound from a Dolby Pro Logic decoded movie soundtrack. The front channels also reproduce similar information from a two channel stereo source such as a compact disc or audio tape.

DOLBY SURROUND CENTER FRONT

Dolby Surround movie soundtracks are encoded with a Center channel, which also includes dialog information, to increase the realism of the home theater experience. The Dolby Pro Logic decoded Center channel is reproduced through a loudspeaker placed in the front center location, either above or below the viewing screen. A Center loudspeaker provides greater intelligibility and localization of a movie dialog regardless of the seating position.

DOLBY SURROUND LEFT and RIGHT SURROUND

Dolby Surround soundtracks are encoded with a specially processed surround sound signal. When decoded by Dolby Pro Logic processing circuits, the surround sounds can include all types of acoustical information and sound effects that enhance your listening enjoyment. The Dolby Pro Logic decoded surround sound channel is monaural, however, it is reproduced through two separate loudspeakers placed on the left and right walls of the listening area. The surround loudspeakers should radiate sound in a nondirectional manner, allowing the listeners to hear only a diffused sound. Properly installed surround loudspeakers will provide ambience, and should not distract from the direct sound reproduced by the front loudspeakers.

HOME THX AUDIO SURROUND CHANNELS

Home THX circuits add additional processing to all the original Dolby Pro Logic decoded signals. The monaural surround signal is further processed into two separate spatially expanded left and right surround signals.

HOME THEATER AUDIO CHANNEL CONFIGURATION WITH DOLBY PRO LOGIC™ AND HOME

THX AUDIO

7

HOME THEATER AUDIO CHANNEL CONFIGURATION WITH DOLBY PRO LOGIC™ AND HOME THX AUDIO

There are specific Home THX Audio requirements for surround sound level calibration. This information is included in the manual section "MclNTOSH HOME THEATER SURROUND SOUND VOLUME LEVEL CALIBRATION".

SUBWOOFER

Home THX Audio specifications require a subwoofer to be used in a home theater system. A subwoofer loudspeaker is designed to reproduce only the lowest audio frequencies, which are essentially non-directional. The C39 meets this requirement by combining the Left, Right and Center channel signals and feeding them through a filter that allows only the bass frequencies of 80Hz and lower to be fed to the subwoofer outputs. The non-directional sound characteristics of a subwoofer allow it to be placed in a wide range of room locations.

A well designed subwoofer will reproduce the low frequency music and sound effects present in today's action movie sound tracks with dramatic impact. Using a discretely placed subwoofer also allows the optional use of somewhat smaller and less obtrusive front loudspeakers.

Detailed information on Home Theater loudspeaker setup is covered in the manual enclosed with your Mcintosh HT Series Home Theater loudspeakers.

FRONT PANEL CONTROLS, SWITCHES AND PUSHBUTTONS

The C39 can be remotely controlled. Most of the operating functions performed at the front panel, also can be done by the C39 Hand Held Remote Controller. The following information refers only to the front panel. Another section of this manual explains the operation of the C39 Hand Held Remote Controller.

The back cover of this manual folds out to show drawings of the front and rear panels of the C39. This will assist you in identifying and locating the front panel controls, switches, pushbuttons and the rear panel connectors and switches. The letters and numbers on the drawings refer to the information that follows.

A. BASS and TREBLE

Provides 12dB boost and cut, with neutral flat response at the center detent position. The Bass and Treble controls affect the LEFT and RIGHT Balanced Outputs, the LEFT FRONT, CENTER, RIGHT FRONT and SUBWOOFer Unbalanced Outputs. These are all Area "A" Outputs. The corresponding channels of the 6 CHANNEL OUTPUT connector are also affected.

The VCR1, VCR2, TAPE 1, TAPE 2 and Area " B " Outputs are not affected by the Bass and Treble controls.

B. RECORD

Selects any of the 12 audio input program signals that will feed the TAPE 1, TAPE 2, VCR 1, VCR 2 and Area "B " Audio Outputs.

Area "B" must first be turned ON in Area "B", by a keypad or remote controller transmitting to an Area "B" sensor, before the Area "B" outputs will operate.

The audio signals for SATellite, TV, Laser Video, VCR1, VCR2 and V-AUX will have their corresponding video signals switched simultaneously. The selected video RECORD signals will appear at the MONitor B, VCR1 and VCR2 VIDEO Outputs. This allows the selected program signals to be fed to an external TV monitor, as well as to one or two VCR units for recording purposes.

8

All audio or video tape recording must be setup manually in Area "A". Prior to a

recording session, always press the REC (Record) LOCK	pushbutton to disable all
remote sensors or keypads to avoid accidental recording	disruption.
C. MODE (Selects the operating configuration)

MONO: All left and right channel signals are combined for Mono operation and fed to the LEFT FRONT, RIGHT FRONT, Balanced, Unbalanced and the corresponding 6 CHANNEL connector outputs. The combined Mono signals of 80Hz and lower are also fed to the SUB-

WOOFER Output.

The Unbalanced CENTER Output can be activated in MONO by setting the rear panel CENTER FILL Switch (25), to the ON position. This allows a Center channel loudspeaker to

be used during MONO operation.

STEREO: Left channel signals are fed to the LEFT FRONT Unbalanced and the LEFT Balanced Outputs. Right channel signals are fed to the RIGHT FRONT Unbalanced and the RIGHT Balanced Outputs. The Left and Right signals at 80Hz and lower are combined and fed to

the SUBWOOFer Output.

The Unbalanced CENTER Output, which contains the combined left and right channel signals can be activated by setting the rear panel CENTER FILL Switch (25), to the ON posi-

tion. This allows a Center channel loudspeaker to be used during STEREO operation.

HALL: ENHANCES TWO CHANNEL AUDIO SIGNALS. Left channel signals are fed to the LEFT FRONT Unbalanced and LEFT Balanced Outputs. Right channel signals are fed to the RIGHT FRONT Unbalanced and RIGHT Balanced Outputs. The Left and Right signals of 80Hz and lower are combined and fed to the SUBWOOFer Output. The combined Left and Right audio signals are also fed to a Digital Processor, time delayed, and then fed to the LEFT SURround and RIGHT SURround Outputs. The time delay can be adjusted by the front panel DELAY

(ms) Switch.

The Unbalanced CENTER Output can be activated in HALL mode by setting the rear panel CENTER FILL Switch (25), to the ON position. This allows a Center channel loudspeaker to

be used in the HALL operating mode.

CINEMA 1, TO REPRODUCE DOLBY SURROUND, PRO LOGIC DECODED MOVIE

SOUNDTRACKS:

Audio signals from a Dolby Surround encoded movie soundtrack are fed to the C39 Dolby

Pro Logic processing and decoding circuits which produce the following outputs.

Left audio signals are fed to the LEFT FRONT Unbalanced and LEFT Balanced Outputs. Right audio signals are fed to the RIGHT FRONT Unbalanced and RIGHT Balanced Outputs. The Dolby Pro Logic processing circuits also decode the center channel signals which include dialog, and feed them to the Unbalanced CENTER Output. The Dolby Pro Logic processed monaural surround sound signals are fed to the LEFT Surround and RIGHT Surround

outputs.

The Left, Right and Center signals of 80Hz and lower are combined by the C39 and fed

to the SUBWOOFer Output.

The Dolby Pro Logic Indicator on the C39 front panel lights when the MODE Switch is in

CINEMA 1 position.
Dolby Surround	encoding is also	used for MTS and satellite broadcasts as	well as
other audio-only program sources such as compact discs. Use the C39 CINEMA			1 mode
with its Dolby Pro	Logic processing	to enjoy listening to these other program	sources.

FRONT PANEL CONTROLS SWITCHES AND PUSHBUTTONS

9

FRONT PANEL CONTROLS, SWITCHES AND PUSHBUTTONS

CINEMA 2, HOME THX AUDIO: TO REPRODUCE DOLBY SURROUND, PRO LOGIC DECODED MOVIE SOUNDTRACKS WITH HOME THX AUDIO ENHANCEMENT.

The CINEMA 2 or Home THX Audio mode of operation is possible only when the optional Mcintosh THX-M Module has been installed in the C39.

The four Dolby Pro Logic processed output signals are fed to the Home THX Audio circuits in the THX-M module for further processing and enhancement which produce the following six outputs.

Left audio input signals are fed to the LEFT FRONT Unbalanced and LEFT Balanced Outputs. Right audio signals are fed to the RIGHT FRONT Unbalanced and RIGHT Balanced Outputs. The processing circuits also feed center channel signals which include dialog, to the Unbalanced CENTER Output. The Dolby Pro Logic decoded monaural surround signals are then further processed into separate spatially expanded left and right surround signals, which are fed to the LEFT Surround and RIGHT Surround Unbalanced outputs.

The Left Front, Center and Right Front signals of 80Hz and lower are also combined by the C39 and fed to the SUBWOOFer Output.

With the Mcintosh THX-M Module installed in the C39, the front panel Home THX Audio Indicator lights when the MODE Switch is in CINEMA 2 position. The Dolby Pro Logic front panel indicator stays lit in both CINEMA 1 and CINEMA 2 mode.

All signals fed to the six unbalanced outputs also are fed to corresponding pins

on the rear panel 6 CHANNEL OUTPUT connector.

D.DISPLAY WINDOW

1.The Dolby Pro Logic™ indicator lights when the C39 is switched to CINEMA 1 or CINEMA 2 Mode.

2.The Home THX Audio indicator lights when the C39 is in CINEMA 2 Mode, and the optional THX-M Module is installed.

The optional Mcintosh THX-M Module must be installed in the C39 for the Home

THX Audio indicator to light.

3. The % (Percentage), VOLUME indicator always lights when the C39 is turned on and operating. The selected volume is indicated as a percentage of maximum, with numbers reading from 0 to 99. The indicator also shows the amount of volume level trim that is used for each channel during the surround level calibration procedure.

E. LISTEN

Selects any of the 12 audio input program signals that will feed the six Unbalanced outputs, the two Balanced outputs and the SIX CHANNEL OUTPUT connector. These are Area "A" signals. The audio signals for Satellite, TV, Laser Video, VCR1, VCR2 and V-AUX will have their corresponding Video signals switched simultaneously. The selected LISTEN video signals will appear at the MON A Video Outputs. You can select either audio only programs for listening, or audio/video programs for listening and viewing.

The VCR1, VCR2, TAPE 1 and TAPE 2 and Area " B " outputs are not affected by the LISTEN switch.

F. VOLUME

Adjusts the volume level of all six Unbalanced outputs, the two Balanced outputs and the 6 CHANNEL OUTPUT Connector. These are Area "A" outputs.

10