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Dolby Dolby Surround Surround Mixing Mixing Manual Manual Chapter Chapter 2 2 - - Technical Technical Guidelines Guidelines
2-12 2-12
shown in shown in
Figure 2-18 Figure 2-18
. A few manufacturers have installed patch points . A few manufacturers have installed patch points in the proper place for in the proper place for
this purpose. If you have this feature, follow the this purpose. If you have this feature, follow the console manufacturer’s instructions for console manufacturer’s instructions for
installing the decoder. If you do not installing the decoder. If you do not have this feature, some wiring or modifications may be have this feature, some wiring or modifications may be
required. required.
DECODER DECODER
CONSOLE CONSOLE
MONITOR MONITOR
SYSTEM SYSTEM
MONITORS MONITORS
S SO OU UR RC CE ES S E EN NC CO OD DE ER R R RE EC CO OR RD DE ER R
Figure 2-18 Signal Flow through Console Monitor Figure 2-18 Signal Flow through Console Monitor
The simplest way to add the The simplest way to add the decoder is to connect it to decoder is to connect it to the console’s control room monitor the console’s control room monitor
outputs. If this is done, check three outputs. If this is done, check three things. First, set the control room monitor level pot things. First, set the control room monitor level pot in a fixed in a fixed
position and leave it there. The position and leave it there. The decoder requires a calibrated reference level that changes if decoder requires a calibrated reference level that changes if the the
control room level pot position does. Under this operation, the l control room level pot position does. Under this operation, the l evel control fader on the decoder evel control fader on the decoder
(which can be remoted) becomes the new (which can be remoted) becomes the new control room monitor level control. Second, the insert control room monitor level control. Second, the insert
point for the decoder must be prior point for the decoder must be prior to any speaker switching circuitry for alternate speakers. to any speaker switching circuitry for alternate speakers.
Most consoles require modifications to add the insert points. Third, you may need Most consoles require modifications to add the insert points. Third, you may need to add to add
switching circuitry for the extra speakers that are switching circuitry for the extra speakers that are part of the surround monitoring system. part of the surround monitoring system.