Manual
Issue 2, March 2020 Model 381 User Guide
Page 16 Studio Technologies, Inc.
MODEL 381
ON-AIR BELTPACK
knobs to be in the “out” position when the
level needs to be adjusted and in the “in”
position when protection from an unwanted
change is desired. Analog audio signals do
not pass directly through the two controls.
The position of the controls is recognized
by the Model 381’s processor which then
adjusts the actual signal level within the
digital domain.
Headphone Output – Routing
and Controls (A/B)
How the two rotary controls function will
depend on two configuration settings as
made using the STcontroller application.
The Headphone Output – Routing mode
configures how the two Dante audio inputs,
Ch 1 and Ch 2, are assigned to the two
headphone output channels. The Head-
phone Output – Controls (A/B) configuration
determines exactly the way in which the two
controls will function. Since the two configu-
rations each offer three choices, this pro-
vides nine separate configurations that each
provide a unique operating scenario.
When Headphone Output – Routing is
configured to the Dual-Channel Stereo
mode:
• In the
Ch 1 Level / Ch 2 Level mode the
control on the left, labeled A, is used to ad-
just the level of the channel 1 input audio
signal as it is being sent to the left chan-
nel of the headphone output. The control
on the right, labeled B, is used control the
level of the channel 2 input audio signal
as it is sent to the right headphone output.
Sidetone audio, whose level will follow the
Fixed Sidetone Level configuration, will be
sent to both the left and right headphone
output channels.
• In the Ch 1 & 2 Level / Balance mode the
control on the left, labeled A, adjusts the
level of the Ch 1 input audio signal as it
is being sent to the left headphone output
and the Ch 2 input audio signal as it is
being sent to the right headphone output.
The control on the right, labeled B, will
adjust the level balance of both audio input
Ch 1 and audio input Ch 2 as they are sent
to the headphone output channels. The
level of the sidetone audio will follow the
Fixed Sidetone Level configuration and
will be sent to both the left and right head-
phone output channels.
• In the Ch 1 & 2 Level / Sidetone Level
mode the control on the left, labeled A, ad-
justs the level of both the Ch 1 input audio
signal as it is being sent to the left head-
phone output and the Ch 2 input audio
signal as it is being sent to the right head-
phone output. The control on the right,
labeled B, adjusts the level of the sidetone
audio as it is being sent to both the left and
right channels of the headphone output.
In this mode the Fixed Sidetone Level
configuration will be ignored.
When Headphone Output – Routing is
configured to the Dual-Channel Mono
mode:
• In the
Ch 1 Level / Ch 2 Level mode the
control on the left, labeled A, is used to ad-
just the level of the channel 1 input audio
signal as it is being sent to both the left
and right headphone output channels. The
control on the right, labeled B, controls the
level of the channel 2 input audio signal
as it is sent to both the left and right head-
phone output channels. Sidetone audio,
whose level will follow the Fixed Sidetone
Level configuration, will be sent to both the
left and right headphone output channels.