Studio Technologies 372A, User Manual

Page: 12 / 23

Issue 1, April 2019 Model 372A User Guide
Page 12 Studio Technologies, Inc.
MODEL 372A
INTERCOM BELTPACK
When a dynamic microphone is connected
to the Model 372A the 42 dB gain setting
should be appropriate for many applications.
The 36 dB choice may be correct should the
connected microphone have a high sensitivity
(high output level for a given acoustical input)
or an enthusiastic user routinely talks loudly
into the microphone. Setting the gain for
48 dB may be helpful in some applications,
such as with headsets that have a low micro-
phone output level. The 48 dB gain setting
may also be useful when the Model 372A is
going to be deployed at events where users
are not able to speak at normal levels, e.g.,
sporting events such as golf tournaments
where “whispering” may be necessary.
Electret microphones typically have a higher
output level due to their internal preamplifier
circuitry. As such, less preamplifier gain may
be required. Selecting the 24 or 30 dB gain
setting will probably be appropriate in these
cases.
The compressor active LED, labeled COMP
and visible adjacent to the HEADSET A con-
nector, can act as a guide when setting the
microphone preamplifier gain. During normal
talk operation the compressor active LED
should light intermittently. If, for example, with
a dynamic microphone the LED rarely lights
and the preamp gain is set to 42 dB it might
be a good idea to change it to 48 dB. If the
LED is lit fully during normal talking in a situa-
tion where the headset has an electret micro-
phone and the gain is set for 30 dB, changing
it to 24 dB might be warranted.
Headphone Output – Input Channel
Routing
Choices are
Left
,
Right
, and
Left and Right
.
Two Dante transmitter (output) channels
can be assigned to the Model 372A’s two
Dante receiver (input) channels using the
Dante Controller application. How these two
audio signals are routed to the Model 372A’s
headphone output channels can be inde-
pendently configured. For flexibility, each
input source has three routing options. They
can be independently configured for send-
ing only to the left channel, only to the right
channel, or sending to both the left and right
headphone output channels.
In some applications split-mono or stereo
operation will be desired. In this case input
channel 1 might be routed to the left head-
phone output while input channel 2 might be
routed to the right headphone output. When
using a stereo or dual-ear headset sending
both inputs to both headphone output chan-
nels is often referred to as a dual-channel
mono output. If a monaural (“single muff”)
headset is used the Left configuration option
allows the two input channels to be com-
bined to monaural and sent to just the left
headphone output channel.
Sidetone Level
Choices are Off , Low , Medium Low ,
Medium , Medium High , and High .
The Model 372A includes a sidetone function
that allows microphone audio coming from
the microphone input section to be sent to
the headphone output. This serves as a user
confirmation that they are actively sending
audio to the talk output channel. Sidetone
audio will only be routed to the headphone
output when the talk channel is active. The
level of the sidetone audio can be selected
from among five values. The correct value
is simply the one that makes the user most
comfortable. Sidetone audio can also be dis-
abled by selecting Off. Selecting Off would
be useful only in special applications such
as during troubleshooting or where user talk
audio is being returned as part of their listen
audio signals. The two rotary level controls
will not impact the sidetone level.