Studio Technologies 76D 2014 - Manual (Page 24)

Issue 11, May 2014 Model 76D/77 User Guide
Page 24 Studio Technologies, Inc.
for Surround
Post-Fader Monitor Output
Level Offsets
To provide assistance during room calibra-
tion, the relative output levels of the post-
fader surround and stereo 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. Dur-
ing configuration the displayed value repre-
sents 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 reference level
and not be changed. This is typically the
center channel for surround and the left
channel for stereo.
This feature is provided primarily for use
when the post-fader monitor output chan-
nels are connected to loudspeaker sys-
tems that don’t offer a means of “trimming”
the input sensitivity of individual channels.
Without this capability, minor adjustments
to the output level of specific loudspeakers
to account for room acoustics wouldn’t be
possible.
It’s also possible to use the StudioComm’s
output level offset capability to adjust the
overall post-fader monitor output levels to
allow matching to the input sensitivity of
loudspeaker systems. In this case all the
channels (six for surround, two for stereo)
would be configured to have the same
output level offset setting. For example, the
six surround channels could all be config-
ured to have a –3.5 dB output level offset.
However, great care must be taken when
configuring a system in this manner. The
dynamic range or noise floor of the audio
signals will be impacted and extreme set-
tings could lead to poor monitor system
performance.
Restore Factory Defaults
The restore factory defaults function is pro-
vided primarily for factory use. In this way
a system can be shipped with the default
settings selected. While you are welcome
to use this function, be careful so that your
configuration efforts aren’t wasted. Spe-
cifically, be aware that the reference level
is reset to minimum level. All the other
parameters are fairly easy to set up, but
resetting the reference level would require
getting out an SPL meter and a calibrated
signal source. This is a hassle you may
not need!
Model 71 Control Console
Configuration
Two configuration choices are available on
each Model 71. One is its device address,
the other is the button disable mode. A
small button is located on the back of each
Model 71 Control Console, adjacent to the
9-pin female D-sub connector. Pressing
and holding this button for two seconds
places this specific unit in its configuration
mode; normal operation of the Model 76D
and other connected Model 71 and Model
77 units will continue. When a Model 71
enters its configuration mode its three
LEDs will no longer perform their usual
functions. Instead the status LED will blink
to indicate that configuration mode is
active. Refer to Figure 7 for details.
Device Address
The dim and reference level LEDs will
display the Model 71’s current device
address. The rotary level control is used
to select the desired device address; the
LEDs will respond accordingly. The device
address must be selected so as not to con-
flict with the device address of any other