Attention: pour pevenir les chocs elecriques pas utiliser cette fiche polarisee avec un prolongateur, une prise de courant ou un autre sortie de courant, sauf si les lames peuvent etre inserees afond ans en laisser aucune partie a decouvert. 7. For added protection for this product during a lightning storm, or when it is left unattended and unused for long periods of time, unplug it from the wall outlet and disconnect the antenna or cable system. This will prevent damage to the product due to lightning or power line surges. 8. Do not use attachments not recommended in this owners manual as they may cause hazards. Installation: 9. Locate the equipment for proper ventilation. For example, the equipment 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. 10. Locate the equipment away from heat sources such as radiators, heat registers, stoves, or other appliance (including amplifiers) that produce heat. 11. Mount the equipment in a wall or cabinet only as described in this owners manual 12. Do not use this equipment near water; for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement or near a swimming pool, etc. 13. Do not place this product on an unstable cart, stand, tripod, bracket, or table. The equipment may fall, causing serious injury to a person, and serious damage to the product. Connection: 14. Connect this equipment only to the type of AC power source as marked on the unit. 15. Route AC power 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. 16. Do not defeat the inherent design features of the polarized plug. Non-polarized line cord adapters will defeat the safety provided by the polarized AC plug. If the plug should fail to fit, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the grounding-type plug.

Front Panel Mode Nomenclature Dolby Digital, Pro Logic or DTS nomenclature illuminates to show which decoding mode is in use. Adjustable Channel Time Delays Signals to the Center channel and Surround channels can be time delayed. This feature can be used to correct for different listening distances from the center speaker and surround speakers relative to the front speakers. Precision Tracking Volume Control An electronic Volume Control adjusts all six channels with tracking accuracy better than 0.5dB. LED Delay/Volume Indicator The front panel two digit LED reads Volume in percent. It also indicates time delay in milliseconds during time delay calibration, and channel level in dB during surround level calibration.
Built-In System Level Calibration Generator A built-in test signal generator can be switched manually or automatically through all system channels for surround level calibration. The levels can be adjusted plus or minus 12dB. Re-EQ + TM Re-Equalization filter and Timbre Matching modify the sound tracks created for a large theater so they are more enjoyable in the smaller listening room of a home theater. Late Night Dynamic Audio Compression With select encoded Dolby Digital sound tracks, a dynamic volume level compressor can be switched in to reduce the wide dynamic range of music and sound effects. This feature can be very useful for late night listening or when you have close neighbors.

Installation

The MSD4 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 required panel cutout, ventilation cutout and unit dimensions are shown. Always provide adequate ventilation for your MSD4. Cool operation ensures the longest possible operating life for any electronic instrument. Do not install the MSD4 directly above a heat generating component such as a high powered amplifier. If all the components are installed in a single cabinet, a quiet running ventilation fan can be a definite asset in maintaining all the system components at the coolest possible operating temperature. A custom cabinet installation should provide the following minimum spacing dimensions for cool operation. Allow at least 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. Be sure to cut out a ventilation hole in the mounting shelf according to the dimensions in the drawing.

17-1/2" 444mm

17-1/16" 433.4mm 1/4" 6mm Outline of Front Panel Edge of Cutout End Caps 3-9/16" 90.0mm 3-1/16" 77.8mm Panel Height 3 1/2" 88.9mm

7/32" 5.3mm

Front View of a MSD4 custom installed

(Front View)

3/16" 5.1mm Support Shelf Bottom of Cutout and Top of Support Shelf Must Coincide

Mounting Surface

Outline of Unit
Side View of a MSD4 custom installed
Mounting Bracket at Both Sides of the Rear Panel. Fasten with 6-32 x 3/8 Machine Screw and Washer to Chassis. Fasten with 6 x 1/2 Wood Screw and Washer to Support Shelf

(Side View)

Support Shelf

15"

Cut Out Center for Ventilation
Bottom View of a MSD4 custom installed

6"

(Bottom View)

9"

Rear Panel Switches and Connections
Connect the MSD4 power cord to a live AC outlet. Refer to information on the back panel of your MSD4 to determine the correct voltage for your unit Set the FP SENSOR (Front Panel Sensor) slide switch to the OFF position when the MSD4 is being used in a system with a C39 or MX130. Set the FP SENSOR slide switch to the ON position when the MSD4 is being used as a stand alone decoder together with an MVS-3, MC7205 and SL-1 in a simplified surround system When the MSD4 is being used in a system with a C39 or MX130 the POWER CONTROL IN receives turn on and off signals from the McIntosh Control Center.The POWER CONTROL OUT jack sends a turn on and off signal out to a McIntosh Power Amplifier
The SPEAKER SETTINGS switches adjust the bass frequency response to the correct frequency ranges to match the sizes of the front, center and surround speakers. If any speaker in the system is classed as small, frequencies from 80Hz and lower can be switched to the subwoofer output. Set the SUBWOOF switch to ON only when a subwoofer is used in the system
Receives signals from a stereo analog signal source
Receives RF signal from a Laser Video Disc Player reproducing a Dolby Digital (AC-3) sound track
The six outputs feed audio signals to the matching inputs on a Control Center or power amplifier. L SUR (Left Surround) R SUR (Right Surround) CENTER (Center) SUBWOOF (Subwoofer) L FRONT (Left Front) R FRONT (Right Front)
Receives a signal from the Optical Output of a component with a digital audio output The DATA IN jack receives operating signals from the SUM DATA out of a McIntosh C39 or MX130. The DATA OUT jack sends signals on to another McIntosh component Receives a signal from the Coaxial Output of a component with a digital audio output

AUTO (Automatic) switches the builtin calibration test signal generator to each of the six channels in 2 second intervals on a continuous basis. MAN (Manual) system calibration requires the manual selection of each channel
How to Connect with a C39/MX130
1. Connect the MSD4 power cord to a live AC outlet. 2. Connect the six MSD4 audio outputs to the six matching audio inputs on a C39 or MX130. 3. Connect the MSD4 DATA IN jack to the C39 or MX130 AREA A SUM DATA jack 4. Connect the MSD4 PWR CTRL IN jack to the C39 or MX130 POWER CONTROL jack. Connect to a Digital Signal Source 1. McIntosh MLD7020 Laser Video Disc player. a. Connect the MLD7020 RF OUT to the AC-3 RF input on the MSD4. b. Connect either the MLD7020 Optical or Coaxial Digital Output to the matching MSD4 Digital Input. 2. DVD (Digital Versatile Disc Player) a. Connect the DVD digital output, either optical or coaxial, to the MSD4 DVD DIGITAL INPUT. 3. SAT (Satellite Receiver) a. Connect the Satellite Receiver digital output, either optical or coaxial, to the MSD4 SAT input.
NOTE: For information on Video and Analog Audio connections , refer to the owners manual(s) for the component(s). Use either an OPTICAL or a COAXIAL INPUT from a digital component, but not both for the same component
NOTE: If your C39 or MX130 does not include an Area A Sum Data jack, connect to the jack marked SUM DATA.

To AC Outlet

Satellite Receiver
DVD Player McIntosh MX130 Control Center
McIntosh MLD7020 Laser Disc Player 8
How to Connect in a Stand Alone System
1. Connect the MSD4 power cord to a live AC outlet. 2. Connect the MSD4 Left Front, Center, Right Front, Left Surround and Right Surround Outputs to the matching MC7205 Amplifier Channel Inputs. 3. Connect a Y adapter to the MSD4 Subwoof Output jack, with one outlet of the Y on the MSD4 Subwoof Output to the Mono R Line Input jack of an SL-1 Powered Subwoofer. 4. Connect a cable from the second outlet of the Y on the MSD4 Subwoof Output to the MC7205 Sub In/Out jack. 5. Connect the MSD4 PWR CTRL OUT to the SL-1 Power Control In jack and the SL-1 Power Control Out jack to the MC7205 Power Control In jack. 6. Connect the MSD4 Data Out to the MVS-3 Data In jack. 7. Connect the MVS-3 Control Center Audio Outputs to the MSD4 Analog Input Connect to a Digital Signal Source 1. McIntosh MLD7020 Laser Video Disc player. a. Connect the MLD7020 RF OUT to the AC-3 RF input on the MSD4. b. Connect either the MLD7020 Optical or Coaxial Digital Output to the matching MSD4 Digital Input. 2. DVD (Digital Versatile Disc Player) a. Connect the DVD digital output, either optical or coaxial, to the MSD4 DVD DIGITAL INPUT. 3. SAT (Satellite Receiver) a. Connect the Satellite Receiver digital output, either optical or coaxial, to the MSD4 SAT input.

NOTE: For information on Video and Analog Audio connections, refer to the owners manual(s) for the component(s). Use either an OPTICAL or a COAXIAL INPUT from a digital component, but not both for the same component

Y Adapter

McIntosh MVS-3 Audio/Video Selector

McIntosh SL-1 Subwoofer

DVD Player
McIntosh MC7205 Power Amplifier
McIntosh MLD7020 Laser Disc Player 9
Front Panel Controls, Push-Buttons, Switches and Displays
The INPUT switch selects any one of the four DIGITAL INPUTS or the ANALOG INPUT
The CHANNEL STATUS LED display indicates which channels are active, depending on the incoming signal; L (Left Front), C (Center), R (Right Front), LFE (Low Frequency Effects), LS (Left Surround), S (Pro Logic Surround), R (Right Surround)
The DELAY/VOLUME display indicates three types of information; Volume Level, System Calibration, and Time Delay The STANDBY/ON push-button turns the MSD4 on and off, and can reset all the MSD4 microprocessors The VOLUME control is used for four different operations; level match, volume level, channel time delay and system level calibration
The IR (Infra Red) sensor accepts IR signals directly from an HR39/ HR130 Remote Control
The appropriate nomenclature turns on to indicate which Dolby or DTS mode is active
The SURROUND pushbutton switches between internal Dolby Surround Decoding and Stereo
The POWER switch turns all power completely ON or OFF.
The VOLUME pushbutton activates the various volume control functions
Press the SYS CAL, (System Calibration) push-button to activate the internal test signal generator for surround channel level calibration
The Re-EQ+TM pushbutton activates the REEQualization filter and Timbre Match, which compensates for the differences in room acoustics between the movie theater and a home theater room
Press the SURR (SURROUND) push-button to temporarily activate the surround channel time delay adjusting process
The LATE NIGHT push-button turns the volume compression circuit ON and OFF
Press the CNTR (Center) DELAY push-button to temporarily activate the center channel time delay adjusting process
Delay Calibration for Center and Surround Channels
Delay and Level calibration procedures are made relative to the listening area. The ideal listening area is defined as facing directly toward and centered between the front speakers, and in line with the left and right surround speakers.

NOTE: Refer to the Front Panel Drawing on the opposite page and Figures 1 & 2 on this page for the following steps.
Center Speaker Delay If the center speaker is located closer to the listening area than the left and right front speakers, its sound will reach the listener before the sound from the left and right front speakers. This difference in sound arrival times can degrade the listening perception of some sound tracks. The MSD4 allows you to adjust the center speaker time delay to correct for this difference so the sound from the center speaker reaches the listening area at the same time as sound from the front left and right speakers.
NOTE: The MSD4 center delay can be adjusted from 0 to 5ms. Each millisecond delay corresponds approximately to 1 foot in distance.
LEFT FRONT CENTER FRONT RIGHT FRONT
lay to correspond to the difference in feet. 1. Measure the distance from the listening area to the center speaker and then the front left and right speakers. If the center speaker is the same distance as the front speakers, no calibration is necessary since the default factory setting is 0ms. If the center speaker is closer than the front speakers you should adjust the delay to correspond to the difference in feet. 2. Press the CNTR/DELAY push-button to start delay calibration procedure. 3. Adjust the VOLUME control until the DELAY/VOLUME display reads a number equivalent to how many feet closer the center speaker is to the listening area. 4. Press the CNTR/DELAY push-button a second time to exit the delay procedure. Surround Speaker Delay If the surround speakers are located closer to the listening area than the front speakers, their sound will reach the listener before the sound from the front speakers. This difference in sound arrival times can degrade the listening perception of some sound tracks. The MSD4 allows you to adjust the surround speaker time delay to correct for this difference so the sound from the surround speakers reaches the listening area at the same time as sound from the front left and right speakers.
NOTE: The MSD4 surround delay can be adjusted from 0 to 15ms. Each millisecond delay corresponds approximately to 1 foot in distance.

Left Speaker Distance

Center Speaker Distance

Right Speaker Distance

W O S O U F B E R

L E F T

S U R R O U N D

IDEAL LISTENING AREA

R I G H T

LEFT FRONT

CENTER FRONT

RIGHT FRONT

The first time you press the CNTR/DELAY push-button, the DELAY/VOLUME display will indicate 0ms, which is the factory default setting equivalent to no delay. This corresponds to a listening room where the center speaker is the same distance from the listening area as the front left and right speakers. If your center speaker is closer to the listening area than the front left and right speakers, adjust the de-

Figure 1

Surround Speakers Distance

Figure 2 11

How to Operate with a C39/MX130
The first time you press the SURR/DELAY push-button the DELAY/VOLUME display will indicate 5, which is equivalent to a 5 millisecond delay which is the factory default setting. This would correspond to a typical listening room where the surround speakers are 5 feet closer to the listening area than the front speakers. If your surround speakers are in a different location, adjust the delay to correspond to their distances from the listening area relative to the front speakers. 1. Measure the distance from the listening area to the surround speakers, and then to the front left and right speakers. If the surround speakers are the same distance as the front speakers, the calibration delay should be set to 0ms. If the surround speakers are closer than the front speakers you should adjust the delay to correspond to the difference in feet. 2. Press the SURR/DELAY push-button to start delay calibration procedure. 3. Adjust the VOLUME control until the DELAY/VOLUME display reads a number that is the same as the number of feet measured in Step 1. 4. Press the SURR/DELAY push-button a second time to exit the delay procedure.
EXAMPLE: If your center speaker is 2 feet closer to the listening area than the front speakers, set the center delay to 2. If your surround speakers are 4 feet closer to the listening area than the front speakers, set the surround delay to 4. NOTE: The following table may be used to record your Delay Calibration Settings.
Delay Calibration Center Channel Surround Channels Default Setting New Setting
Selecting inputs with the Remote Control results in the MSD4 input selection automatically tracking with the Control Center input. If Inputs are selected manually by turning the C39 or MX130 LISTEN switch, the matching MSD4 inputs must also be selected manually by the MSD4 INPUT switch. The DVD input on the MSD4 is the same as the V-AUX input on the Control Center. If any input other than the four MSD4 inputs are selected, the MSD4 will default to the Analog input.

NOTE: If your C39 or MX130 has the THX-M module installed, switch the Control Center back to internal processing CINEMA 2 to take advantage of the THX enhancements to the Dolby Pro Logic decoded sound tracks.
FP Sensor Set the FP SENSOR switch to OFF.
NOTE: This prevents the MSD4s built-in sensor from receiving the remote control commands that have been already received directly from the C39 or MX130, thus causing improper functioning. Refer to Figure 3.
Late Night The LATE NIGHT push-button turns a volume compression circuit on and off. This feature suppresses loud sounds or music that might disturb neighbors or others not in the immediate area of the home theater. Soft levels are also raised slightly so they are still listenable at reduced overall volume levels. This works only on a Dolby Digital sound tracks with encoded data that supports the compression function. Re-EQ + TM Re-EQualizationTM compensates for the bright sound required in theaters that is not needed in a home theater system. TM or Timbre MatchingTM makes the movement of sounds around the listening room much more natural and realistic by compensating for how the human ear hears sounds from the sides compared to sounds heard from the front. Channel Status LEDs If the signal source contains a Dolby Digital sound track, the MSD4 switches to Dolby Digital mode. The front panel CHANNEL STATUS LEDs L, C, R, LFE, LS and RS will turn on in accordance to the channels that are present on the Dolby Digital sound track.
The following information assumes the MSD4 is being used in a system together with a digital signal source such as a McIntosh MLD7020 Laser Video Disc player, a DVD player or a Satellite Receiver. The MSD4 is operated by an HR34/HR39/HR130 Remote Control sending IR signals to the Control Center sensor.
How to Operate with a C39/MX130 cont
lower from the front left and right speakers and redirect them to the Subwoofer speaker. Center Speaker (None-Small-Large) When the center speaker covers the full frequency range down to 20Hz, set the switch to LARGE. When the Center speaker covers the frequency range only down to 80Hz, set the switch to SMALL. A built-in electronic crossover will remove frequencies of 80Hz and lower from the Center speaker and redirect them to the Subwoofer speaker. When there is no center speaker in the system, set the switch to NONE. The Center channel signal is sent to the left and right front speakers. This mode of operation results in the listeners perceiving a Phantom center speaker. Surround Speakers (Small-Large) When the surround speakers cover the full frequency range down to 20Hz, set the switch to LARGE. When the surround speakers cover the frequency range only down to 80Hz, set the switch to SMALL. The built-in electronic crossover will remove frequencies of 80Hz and lower from the surround speakers and redirect them to the subwoofer speaker.

Note: For the best reproduction of DTS sound tracks, use full frequency range loudspeakers in front and surround locations in addition to a subwoofer. Place Front, Center and Surround Speaker Settings switches to the Large position and the Subwoofer switch to On.
Dolby Digital or DTS Signal

Dolby Pro Logic Signal

If the signal source contains DTS encoded signals, theMSD4 switches to DTS mode. The front panel CHANNEL STATUS LEDs L, C, R, LFE, LS and RS will turn on in accordance to the channels that are present on the DTS sound track. If the signal source contains only a Dolby Pro Logic sound track, the MSD4 switches to Pro Logic mode. The front panel CHANNEL STATUS LEDs L, R, and S will turn on.
Volume Control The MSD4 VOLUME control is factory preset with the volume display indicating 75. This is the recommended initial volume calibration when the MSD4 is used in a system with a C39 or MX130. If you wish to change the audio volume level from signal sources connected to the MSD4 relative to other signal sources selected by the C39 or MX130, press the VOLUME pushbutton to activate the MSD4 volume control. Adjust the control until the desired level is reached. Press the VOLUME push-button again to deactivate the volume control. This will prevent an accidental change of the calibrated level Figure 3
NOTE: If the input selector is set to (CD 1, SAT, LV or DVD) and no digital signal is present, the Volume push-button LED will flash on/off to indicate the outputs are muted. When the outputs are muted the volume control calibrated level will not function as described above.
Front Speakers (Small-Large) When the front left and right speakers cover the full frequency range down to 20Hz, set the switch to LARGE. When the front speakers cover the frequency range only down to 80Hz, set the switch to SMALL. A built-in electronic crossover will remove frequencies of 80Hz and
Subwoofer Speaker (Off-On) Set the SUBWOOF switch to ON whenever a subwoofer is used in the system. In this mode, the LFE (Low Frequency Effects) are always sent to the subwoofer. The subwoofer also receives from any channel(s), that have their SPEAKER switches set to SMALL, low frequencies of 80Hz and lower. Set SUBWOOF switch to OFF when all SPEAKER switches are set to LARGE and no subwoofer is being used in the system. The LFE (Low Frequency Effects) signals

Figure 4

test signal switches. If you determine that the test signal volume is louder or softer in any of the channels, the levels should be adjusted so you hear essentially the same test signal volume from all of the channels. The left front channel volume level can serve as a reference. 5. Make channel level calibration adjustments with the optional HR34/HR39/HR130 Remote Control Surround Up and Down push-buttons from the listening area. You can also use the MSD4 volume control. If an adjustment is made on a channel, there is an additional 2 second time interval on that channel before the system switches the test signal to the next channel. As a level is changed, the DELAY/VOLUME display instantly changes to indicate the calibration level change in dB. If the level is increased, the display shows plus num-
System Level Calibration cont
bers, and if decreased shows minus numbers. Calibration levels can be adjusted over a range of plus or minus 12dB. 6. When the test signal switches to succeeding channels, repeat the level calibration process until the test signal volume levels of all the channels are the same. 7. The calibration channel cycling mode can be repeated as often as necessary until you are satisfied that the volume levels of the test signal are the same from all channels. 8. Exit the System Calibration mode by pressing the SYS CAL push-button a second time.
NOTE: All System Level Calibrations are retained in permanent memory and will change only if calibration is performed again. The factory default setting for the volume control is 75.
HR34/HR39/HR130 Remote Control which performs the same functions as the SYS CAL push-button.
4. While seated in the listening area, note the volume levels of the test signal from each of the channels. If you determine that the test signal volume is louder or softer in any of the channels, the levels should be adjusted so you hear essentially the same test signal volume from all of the channels. The left front channel volume level can serve as a reference. 5. Exit the Manual System Calibration mode by pressing the SYS CAL push-button after calibrating the Subwoofer channel.
NOTE: All System Level Calibrations are retained in permanent memory and will change only if calibration is performed again. The following table may be used to record your Delay Calibrations Settings.
Manual System Calibration 1. Set the rear panel SYSTEM CALIBRATE switch to MAN. 2. Adjust the Figure 5 MSD4 volume control until the display reads at least 70, an initial refCalibration Channel erence setting to ensure that the test signals will be adequately loud to perform the level calibration. Left Front 3. Press the SYS CAL push-button once to start Manual Center Front System Calibration. The first time the SYS CAL pushbutton is pressed, the test signal will switch to the Left Right Front Front channel and will stay in that channel until the SYS CAL push-button is pressed again, followed by Right Surround the Center, Right Front, Right Surround, Left Surround Left Surround and Subwoofer. The MSD4 DELAY/VOLUME display Subwoofer will read 0 for each channel before any adjustments are performed.

NOTE: The front panel CHANNEL STATUS LEDs will light to indicate which channel is reproducing the test signal. A more convenient method of manually switching the test signal is to use the SP push-button on the optional

Default Setting 0 0

New Setting
How to Operate in a Stand Alone System
The following information assumes the MSD4 is being used with a McIntosh MC7205 amplifier, SL-1 Subwoofer, MVS-3 Audio/Video Selector and a digital signal source such as McIntosh MLD7020 Laser Video Disc Player, a DVD Player or a Satellite Receiver. The MSD4 can be operated manually or with an optional HR34/HR39/HR130 Remote Control. FP Sensor Set the FP SENSOR switch to ON.
NOTE: This will activate the MSD4s built in sensor for receiving the remote control commands from the optional HR34/HR39/HR130 remote control. Refer to Figure 6 on the next page, for location of Rear Panel Switches.
sound track, the MSD4 switches to Pro Logic mode. The front panel CHANNEL STATUS LEDs L, R, and S will turn on. Front Speakers (Small-Large) When the front left and right speakers cover the full frequency range down to 20Hz, set the switch to LARGE. When the front speakers cover the frequency range only down to 80Hz, set the switch to SMALL. A built-in electronic crossover will remove frequencies of 80Hz and lower from the front left and right speakers and redirect them to the Subwoofer speaker. Center Speaker (None-Small-Large) When the center speaker covers the full frequency range down to 20Hz, set the switch to LARGE. When the Center speaker covers the frequency range only down to 80Hz, set the switch to SMALL. A built-in electronic crossover will remove frequencies of 80Hz and lower from the Center speaker and redirect them to the Subwoofer speaker. When there is no center speaker in the system, set the switch to NONE. The Center channel signal is sent to the left and right front speakers. This mode of operation results in the listeners perceiving a Phantom center speaker. Surround Speakers (Small-Large) When the surround speakers cover the full frequency range down to 20Hz, set the switch to LARGE. When the surround speakers cover the frequency range only down to 80Hz, set the switch to SMALL. The built-in electronic crossover will remove frequencies of 80Hz and lower from the surround speakers and redirect them to the subwoofer speaker.
Late Night The LATE NIGHT push-button turns a volume compression circuit on and off. This feature suppresses loud sounds or music that might disturb neighbors or others not in the immediate area of the home theater. Soft levels are also raised slightly so they are still listenable at reduced overall volume levels.This works only on an Dolby Digital sound tracks with encoded data that supports the compression function. Re-EQ + TM Re-EQualizationTM compensates for the bright sound required in theaters that is not needed in a home theater system. TM or Timbre MatchingTM makes the movement of sounds around the listening room much more natural and realistic by compensating for how the human ear hears sounds from the sides compared to sounds heard from the front. Channel Status LEDs If the signal source contains a Dolby Digital sound track, the MSD4 switches to Dolby Digital mode. The front panel CHANNEL STATUS LEDs L, C, R, LFE, LS and RS will turn on in accordance to the channels that are present on the Dolby Digital sound track. If the signal source contains DTS encoded signals, theMSD4 switches to DTS mode. The front panel CHANNEL STATUS LEDs L, C, R, LFE, LS and RS will turn on in accordance to the channels that are present on the DTS sound track. If the signal source contains only a Dolby Pro Logic

How to Operate in a Stand Alone System cont
Subwoofer Speaker (Off-On) Set the SUBWOOF switch to ON whenever a subwoofer is used in the system. In this mode, the LFE (Low Frequency Effects) are always sent to the subwoofer. The subwoofer also receives from any channel(s), that have their SPEAKER switches set to SMALL, low frequencies of 80Hz and lower. Set SUBWOOF switch to OFF when all SPEAKER switches are set to LARGE and no subwoofer is being used in the system. The LFE (Low Frequency Effects) signals are sent equally to each of the five remaining channels. If the SUBWOOF switch is OFF and there are no large full range speakers in the system, you will not hear the extreme low frequencies. When no subwoofer is connected and LARGE (Full Range) Loudspeakers are connected the Front Left and Right Channels, the LFE (Low Frequency Effects) are directed to them.
EXAMPLE: If you are using McIntosh speakers, HT-1 or SL-6, HT-2 or SL-1, HT-3, HT-4, use the following settings. Set FRONT to SMALL. Set CENTER to SMALL. Set SURR to SMALL
Remote Adjustment of Surround Levels You can adjust surround levels while listening by using the Surround Up and Down push-buttons on the optional HR34/HR39/HR130 Remote Control. These adjustments will stay as long as the MSD4 is turned on, but will be erased when the MSD4 is turned off. Reset of Microprocessors In the event that the controls of the MSD4 stop functioning, there is a user reset function built in. While the MSD4 is on depress and hold in the STANDBY/ON/RESET push button for five seconds to reset the MSD4s microprocessors.

Figure 6

Set SUBWOOF to ON. Set SUBWOOF to ON.
Volume Control Set the VOLUME control to the desired level.
NOTE: If the input selector is set to (CD 1, SAT, LV or DVD) and no digital signal is present, the Volume push-button LED will flash on/off to indicate the outputs are muted.

Specifications

Frequency Response Stereo Left and Right Small speakers: 80Hz-20,000Hz Subwoofer: 20Hz-80Hz Left and Right Large speakers: 20Hz-20,000Hz Subwoofer: OFF Pro Logic Left, Center, Right, Small speakers: 80Hz-20,000Hz Surround Small speakers: 80Hz-7kHz. Subwoofer: 20Hz-80Hz Left, Center, Right, Large speakers: 20Hz-20,000Hz Surround Large speakers: 20Hz-7kHz. Subwoofer: OFF Dolby Digital and DTS Left, Center Right Small speakers: 80Hz-20,000Hz. Surround Small speakers: 80Hz-20,000Hz Subwoofer: 20Hz-80Hz Left, Center, Right Large speakers: 20Hz-20,000Hz Surround Large speakers: 20Hz-20,000Hz. Subwoofer: 20Hz-80Hz Rated Output All Modes: 2.0VRMS for full bit Output Impedance 420 ohms at all outputs Maximum Output Voltage 8VRMS Total Harmonic Distortion 0.005% at all outputs Sensitivity Analog Input: 500mV for 2.0V output, (100mV IHF) Signal To Noise Ratio - All Outputs Greater than 90dB un-weighted Greater than 100dB A weighted Greater than 98dB CCIR Maximum Input Signal Analog Input: 2VRMS full BIT, 6VRMS with AILC Voltage Gain Analog Input to Output: 12dB Power Requirements 100 Volts, 50/60Hz at 45 watts 110 Volts, 50/60Hz at 45 watts 120 Volts, 50/60Hz at 45 watts 220 Volts, 50/60Hz at 45 watts 230 Volts, 50/60Hz at 45 watts 240 Volts, 50/60Hz at 45 watts

NOTE: Refer to the rear panel of the MSD4 for the correct voltage
Dimensions Front Panel: 17-1/2 inches (44.5cm) Wide, 3-9/16 (9cm) High Depth required behind mounting panel, including connectors: 17-1/2 (44.5cm) Knob clearance required in front of mounting panel: 1-3/8 (3.5cm)

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 attached 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. Please see the Part List for the correct part numbers. Quantity Part Number Description Shipping carton only Foam end cap Inside carton only Top pad Bottom pad Inner carton pad Plastic foot #10-32 x 3/4 screw #10 x 7/16 Flat washer Shipping carton complete with all the above parts
McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, NY 13903

McIntosh Part No. 040594

SURROUND DECODER / DOLBY DIGITAL AC-3, DTS

McIntosh

The Compendium
FRONT PANEL: Glass with illuminated teal/gold nomenclature. INPUT switch: ANALOG, CD 1, SAT, LV, DVD. CHANNEL STATUS lights: L, C, R, LFE, LS, S, RS. INPUT SIGNAL MODE lights: DTS, DOLBY DIGITAL and PRO LOGIC. DELAY/VOLUME digital display. VOLUME / DELAY/SYS CAL control. 7 IR sensor. Touch button switches with indicator lights: SURROUND, SYStem CALibration, LATE NIGHT, RE-EQ+TM, POWER: OFF or ON (with indicator), CeNTeR DELAY, SURRound DELAY, VOLUME, STANDBY/ON / RESET.
BACK PANEL: Power cord receptacle. OUTPUTS: Left SURround, CENTER, Left FRONT, Right SURround, SUBWOOFer, Right FRONT. Left & Right ANALOG INPUT. FP SENSOR switch: OFF or ON. DATA IN and OUT. POWER CONTROL IN and OUT. SYSTEM CALIBRATE switch: AUTO or MAN. SPEAKER SETTINGS switches: FRONT: SMALL or LARGE, CENTER: NONE, SMALL or LARGE, SURRound: SMALL or LARGE, SUBWOOFer: OFF or ON. DIGITAL OPTICAL INPUTS: DVD, LV, SAT, CD 1. DIGITAL COAXIAL INPUTS: SAT, CD1, DVD, LV. LV RF AC-3 INPUT. SPECIFICATIONS: Frequency response stereo: Left and right small speakers: 80Hz20,000Hz, subwoofer 20Hz to 80Hz. Left and right large speakers: 20Hz-20,000, subwoofer off. Frequency response pro logic: Left, center, right small speakers: 80Hz-20,000Hz, surround 80Hz-7kHz, subwoofer 20Hz to 80Hz. Left, center, right large speakers: 20Hz-20,000Hz, surround 20Hz-7kHz, subwoofer off. Frequency response Dolby digital and DTS: Left, center, right small speakers: 80Hz-20,000Hz, surround 80Hz-20kHz, subwoofer 20Hz to 80Hz. Left, center, right large speakers: 20Hz-20,000Hz, surround 20Hz-20kHz, subwoofer 20Hz to 80Hz. Rated output: 2.0V for full bit (8.0V max). Output impedance: 420 ohms at all outputs. Total harmonic distortion: 0.005% at all outputs. Sensitivity analog input: 0.5V for 2.0V output (2.0V full bit, 6.0V with AILC). Signal to noise ratio all outputs: >100dB A weighted. Voltage gain: 12Db. MSD 4 - Sold from: 1998 -. S/N: PN1001~????? $3,250.00
Size: 3-9/16", 17-1/2"W and 17-1/2"D.
2007 VintageMac Larry Hodson

Rev.107

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