Model 214A User Guide
Issue Preliminary 1, October 2022
Studio Technologies, Inc.
Page 13
Model 214A
ANNOUNCER’S CONSOLE
Menu Page
The following configuration selections are available in the STcontroller menu:
Microphone Input – P48 Phantom Power
Choices are
Off
and
On
.
STcontroller allows selection of the on/off status of the
microphone input’s P48 phantom power source. The on/
off status is displayed by way of an LED, red in color,
located on the back panel adjacent to the microphone input
connector. Select the status of the P48 source to meet the
needs of the connected microphone.
Microphone Input – Gain
Choices are 19 dB to 64 dB in 3-dB steps.
STcontroller is used to select the gain of the microphone
preamplifier. There’s no problem changing the gain setting
while the unit is operating. Small audio clicks or pops might
occur during gain transitions but this shouldn’t be a major
issue as long as associated monitor loudspeakers are
temporarily attenuated or muted.
To select the correct amount of gain for an application will
probably take some experimentation. The goal is to bring
the microphone’s signal up to the Dante reference level
which Studio Technologies considers to be –20 dBFS (this
is 20 dB below the digital maximum of 0 dBFS). Operating
at this nominal signal level will help ensure that optimal
audio performance is delivered to the destination device
or devices.
There’s no “perfect” gain setting that this guide can
recommend. The two issues that impact the gain setting
are the output sensitivity of the connected microphone and
the acoustical output level of the microphone’s user. With
some headset microphones, such as that in a Sennheiser
HMD 26 or HMD 27, selecting an initial gain setting of 43
or 46 dB would be appropriate. Users who speak loudly
might need to have the gain reduced to 40 or even 37 dB;
quiet users might need 49 or 52 dB of gain.
UPDATE!
UPDATE!
