Epiphan Pearl Mini Live Video Production System - Manual (Page 127)

Pearl Mini User Guide Adjust audio gain and delay
of audio input devices. You should add the suggested gain to the audio input to get an average signal to
register at a nominal level in the VU meter (i.e. where the green bars change to yellow). The actual amount of
gain needed depends on the strength of the original audio signal.
Table 23 Audio input port gain guidelines
Audio source
Input
port
Gain
Dynamic microphone XLR Add +50 to +60 dB gain to the audio input port.
Electret microphone
XLR Add +18 to +40 dB gain to the audio input port.
3.5 mm Add +6 to +12 dB gain to the audio input port.
Wireless microphone
receiver
XLR Add +18 to +40 dB gain to the audio input port.
3.5 mm Add +6 to +12 dB gain to the audio input port.
Condenser microphone
with phantom power
XLR Add +40 to +60 dB gain to the audio input port.
Mobile phone or other
consumer line level device
TRS Add +6 to +12 dB gain to the audio input port.
XLR Add +6 to +12 dB gain to the audio input port.
RCA
1
Nominal
Professional mixer
TRS Nominal
XLR Nominal
RCA Not recommended.
1 To avoid unwanted signal noise on the RCA ports, we recommend adding no more than 12dB of gain to the RCA ports.
Ensure the audio input source is connected to an analog audio input port on Pearl Mini before proceeding.
To adjust the gain and delay for an audio source:
1. Login to the Admin panel as admin . See Connect to the Admin panel .
2. From the Inputs menu, select an audio source. The audio configuration page for the audio source
opens.
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