SRM Operations Manual
41
SRM Setup Mode |
Copyright © P Squared Ltd 2013
Switching On 48v Phantom Power On/Off Microphone Channels
There are two main types of microphones, dynamic microphones (no power required) and
condenser microphones (need power to operate). Condenser microphones require a 48v power
supply which is referred to as phantom power because it is delivered along the same cables as the
microphone cables.
In most cases, if you plug a dynamic microphone into a mixer channel configured to provide
phantom power, there will be no effect as the internal wiring is such that the phantom power circuit
is not completed. There is a chance with damaged microphones or very old (or sub-standard)
microphones that plugging into a phantom power enabled mixer channel could result in damage to
the microphone.
For this reason, you can switch phantom power on and off for each of the Microphone / Line
channels on the SRM.
To switch phantom power on or off on a Microphone / Line channel on the SRM, use the following
procedure:
1.
Ensure all the faders are closed.
2.
First you need to put the SRM in Setup Mode. To do that hold MONITOR AUTO PREFADE
and PRESENTER AUTO PREFADE and GUEST AUTO PREFADE buttons and press the
MONITOR PGM button 5 times within 2 seconds.
