Installation manual

DTS-6 Installation Manual Section 5: Operation
5-3
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• Maintenance
The timecode reader lens should be blown off with compressed air once a day to
remove any dust build up. The CD-ROM drives do not have to be cleaned, but keep
their doors shut as to keep dust out.
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• After The Show
When returning a DTS encoded movie back to the distributor, put the movie discs back
into the yellow reel. Put the loaded yellow reel in the can with the film. Remember to
remove the DTS trailer (logo) film so you may use it with other DTS encoded films.
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• Moving the DTS System
Many theaters are moving their DTS systems from house to house following DTS
movies. If you are a theater that does this, there are a few steps that must be taken to
ensure proper digital playback. Give the person moving the system at least one hour’s
time to complete the task.
* The DTS system must be configured for the type surrounds (mono/stereo) present in
your theater. Since the player’s top cover must be removed to change the settings,
check this before putting it into the rack. To check or change the DTS-6 surround
programming, see Section 3.2.
* The DTS-6 offset switches may have to be reset. Many people have purchased extra
brackets and are marking them with the offset number for that projector. Having a
bracket on every projector saves time when installing/moving the reader head.
Remember, the unit’s offset switches must be correct for the digital sound track to play
in sync with the picture. See Section 4.2. Change-over houses must attach the reader
heads at the same place on both projectors so their offset numbers match.
* The DTS-6 level pots must be recalibrated for its new location. Using a sound
pressure level meter and a DTS 6-track setup disc, measure the pink noise in the theater.
See Section 4.1. Do not simply point the meter out of the port-hole window. This
will not give you proper readings. SPL readings must be taken in an empty theater with
the screen’s curtain open and the cinema processor’s fader to “7”.
*
Whenever anything is changed on the DTS system, be sure to go into the theater at
the start of the first screening. Check that the sync and levels are correct. Watch mouth
movements (lip sync) on screen to verify proper offset.
** WARNING WARNING **
Failure to correctly recalibrate the “moved” DTS-6 unit will result in
improper playback levels.