Studio Technologies 76DA V.4.00 - Manual (Page 24)

Issue 3, July 2012 Model 76DA/77 User Guide
Page 24 Studio Technologies, Inc.
for Surround
C signal routed to L and R will be reduced
(attenuated) by 6 dB. An alternate setting
allows the attenuation level to be 3 dB.
(These levels can also be notated as –3 dB
and –6 dB.)
By default, when the surround to stereo
downmix function is active the LFE channel
associated with a surround input is fully
attenuated (muted). This removes LFE
content from the “downmixed” signal. In
most applications this is appropriate. How-
ever, for special situations a configuration
mode allows the LFE channel to be reduce
by 6 dB and routed to both the left (L) and
right (R) post-fader monitor outputs.
A last word on configuring the surround
to stereo downmix function: no matter
what choices are made when the function
is active the center (C), left surround (LS),
right surround (RS), and subwoofer (SUB)
post-fader monitor outputs will fully mute.
Pre-Fader Surround Digital
Monitor Output Mode
The pre-fader surround digital monitor
output can be configured as to its place in
the Model 76DA’s signal flow. The choices
are pre- or post-downmix. In the pre-down-
mix mode the digital monitor output chan-
nels will not be impacted by the state of the
downmix functions. This setting would be
appropriate if the pre-fader surround digi-
tal monitor outputs were being routed to a
storage system, routed to another facility,
etc. In this case the action of an operator
enabling or disabling the downmix functions
won’t impact the pre-fader surround digital
monitor output signals. If the post-downmix
mode is selected the pre-fader surround
digital monitor outputs will reflect the
actions of the downmix functions. This
choice would be correct if, for example,
level meters were connected to the pre-
fader surround digital monitor outputs. In
this scenario an operator would want to
visually observe the actions that the down-
mix functions impart on the signals.
Channel Pop Solo Mode Offset
Levels
Two parameters can be configured that
determine how the channel pop solo func-
tion will impact the output levels of the post-
fader digital and analog monitor outputs.
The up offset level sets the amount of
increase (gain) that a channel will experi-
ence when it is soloed in the channel pop
solo mode. The down offset level sets the
amount of decrease (attenuation) that the
non-soloed channels will experience when
a channel is active in the channel pop solo
mode.
Post-Fader Digital and Analog
Monitor Output Level Offsets
To provide assistance during room calibra-
tion, the relative output levels of the post-
fader surround and stereo digital and analog
monitor output channels can be adjusted
over a limited range. The eight channels can
be adjusted in 0.5-dB steps over a ±12-dB
range. During configuration the displayed
value represents the dB level difference as
compared to the nominal output level. In
most cases one surround and one stereo
channel should serve as the overall refer-
ence level and not be changed. This is typi-
cally the center channel for surround and
the left channel for stereo. The configured
output level offset values apply to both the
digital and analog surround stereo moni-
tor outputs. It is not possible to configure a
specific channel’s digital and analog monitor
output level offsets to independent values.