JBL SDP-3 Installation & Technical Manual page 28

SDP-3 Digital Surround Processor/Controller
PCM Only
NOTE: PCM ONLY is automati-
cally selected for an input when-
ever ANALOG is selected as the
AUDIO IN setting, as AC-3 and
DTS effects are incompatible with
analog inputs.
AC-3 Only
NOTE: As AC-3 is a digital format,
you must have a digital input se-
lected for AUDIO IN in the INPUT
CONFIG menu.
DTS Only
NOTE: As DTS is a digital format,
you must have a digital input se-
lected for AUDIO IN in the INPUT
CONFIG menu.
If PCM ONLY is selected as the FX FORMAT for a given input, only PCM
effects in the SDP-3 can be used. When the SDP-3 receives a signal
which is not PCM encoded, it will mute and display "NO PCM AUDIO."
In the previous example, if PCM ONLY had been selected, rather than
AUTOMATIC, the SDP-3 would have muted and displayed "NO PCM
AUDIO" when the AC-3 movie and the DTS music disc were being
played.
When AC-3 ONLY is selected as the FX FORMAT, only AC-3 effects
can be used on that input. Any other type of signal received on that input
will cause the SDP-3 to mute and display "NO AC-3 AUDIO." The FX
and buttons will select only AC-3 effects. This is recommended for
any input which will be used only for AC-3 playback.
In our example, selecting AC-3 as the FX Format setting, would have
caused the SDP-3 to mute and display "NO AC-3 AUDIO" when the
Dolby Surround movie and the DTS music disc were played. When the
laser disc was paused, the SDP-3 would have muted rather than
automatically selecting the PCM effect Logic 7.
When DTS ONLY is selected as the FX FORMAT, only DTS effects can
be used on that input. Any other type of signal received on that input will
cause the SDP-3 to mute and display "NO DTS AUDIO." The FX
buttons will select only DTS effects.
In our example, selecting DTS as the FX Format setting, would have
caused the SDP-3 to mute and display "NO DTS AUDIO" when the
Dolby Surround and AC-3 movies were played. When the DTS music
disc was advanced, the SDP-3 would have muted briefly rather than
automatically selecting the PCM effect Logic 7. There would not have
been any brief bursts of noise before playback began.
S ystem
Configuration
and
19