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[. . . ] OWNERS MANUAL
Surround Decoder, Dolby Digital® (AC-3), DTS® and THX®
Dolby, AC-3, Pro Logic and the Double D symbol are registered trademarks of Dolby Laboratories and manufactured under license from Dolby Laboratories. DTS, digital surround, and coherent acoustics are registered trademark of DTS Technology LLC. and manufactured under license from DTS Technology LLC. THX and Re-EQ + TM are registered trademarks of Lucasfilm, Ltd and manufactured under license from Lucasfilm Ltd.
MSD4
McIntosh Laboratory, Inc. [. . . ] Connect either the MLD7020 Optical or Coaxial Digital Output to the matching MSD4 Digital Input. Connect the DVD digital output, either optical or coaxial, to the MSD4 DVD DIGITAL INPUT. 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
To AC Outlet
Y Adapter
Satellite Receiver
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
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
10
Delay Calibration for Center and Surround Channels
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. 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. Press the CNTR/DELAY push-button to start delay calibration procedure. 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. 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
S U R R O U N D
LEFT FRONT
CENTER FRONT
RIGHT FRONT
Left Speaker Distance
Center Speaker Distance
Right Speaker Distance
W O S O U F B E R
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
L E F T
S U R R O U N D
IDEAL LISTENING AREA
R I G H T
S U R R O U N D
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. [. . . ] If the signal source contains only a Dolby Pro Logic
16
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. [. . . ]
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