Studio Technologies 780-03 V.4.15 - Manual (Page 21)

Model 780-03/790 User Guide Issue 1, April 2015
Studio Technologies, Inc. Page 21
for Surround
In the SPL mode the display can be config-
ured to allow the post-fader output level to
be presented to users in terms of an actual
sound pressure level (SPL). It is used in
conjunction with the reference level in dB
SPL configuration and the stored reference
level. The SPL mode allows a user to see
a visual representation of the SPL level
that is present in the listening environment.
While it takes a little more care to correctly
implement the SPL display mode, it can
offer an enhanced experience for Studio-
Comm users.
Reference Level in dB SPL
The reference level in dB SPL configu-
ration allows a specific SPL value to be
associated with the stored reference level
value. In this way whenever the post-fader
digital and analog monitor outputs are at
their reference level, either through activat-
ing the reference level function or manually
adjusting the rotary level control, the Model
790’s display will show the configured
SPL level. Whenever the post-fader digital
and analog monitor outputs are not at the
reference value the display will show the
current value, in dB, relative to the refer-
ence level. The reference level in dB SPL
can be configured over a range of 70.0 to
100.0 dB in 1.0-dB steps. In many applica-
tions using the default value of 85 would
be appropriate, reflecting the widely used
audio-for-picture 85 dB monitoring refer-
ence level. (Typically this 85 dB is really
85 dBC, indicating that a C-weighting filter
has been applied to the measurement.)
Other common reference SPL values, such
as 82 dB and 87 dB, are well within the al-
lowable range.
Auto Reference Level Off
When auto reference level off is enabled,
the function automatically turns the refer-
ence level function off if a change is made
to the rotary level control while the refer-
ence level function is active. This is provided
strictly as a user convenience that may, or
may not, be desired. The default configura-
tion is for the auto reference level off func-
tion to be disabled.
Dim Level
The dim function is used to reduce the
post-fader digital and analog monitor output
levels by a preset amount. The reduction is
in dB relative to the post-fader monitor out-
puts’ current level. There are four dim level
values available: –10.0, –15.0, –20.0, and
–25.0 dB. The default value is –20.0 dB.
Remote Mute All
Two configuration choices are associated
with the remote mute all function: disabled
and enabled. The default setting has the
function enabled.
Remote Dim
Two configuration choices are associated
with the remote dim function: disabled and
enabled. The default setting has the function
enabled.
LFE Downmix Level
By default, when the To Stereo or the To
Mono downmix functions are active the LFE
channel associated with the selected sur-
round input is fully attenuated (muted). This
removes LFE content from the “downmixed”
signal. In most applications this is appropri-
ate. However, for special situations a con-
figuration mode allows the LFE channel to
be included. In this scenario, when the To