Sound Devices MM-1 - Manual (Page 8)

MM-1 User Guide and Technical Information
8
Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.
Application Notes
Line Driving/Mic Checking
Audio from remote microphones located more than 100 meters from a mixing console improve when
sending line level signals to the mix position. Long cable runs at microphone level are more prone
to noise and interference than line level signals. Phantom voltages can also drop over long cable
runs—resulting in problems at the microphone. The MM-1 can be used to step microphone signals
to line level, provide power to microphones, transformer-isolate grounds, and to verify microphone
audio in headphones.
Wireless Boom Operator
The MM-1 can be used to allow a boom operator to have an un-tethered connection to a production
van or mix position. The microphone is connected directly to the MM-1, and the “boom op” can
hear microphone audio directly in headphones. The MM-1 is used to power the microphone and
provide gain. The output of the MM-1 is connected to a body-pack wireless transmitter. A two-way
radio’s earpiece output is connected to the monitor input of the MM-1. Via the two-way the boom
operator receives director’s cues. The MM-1 allows the user to control monitoring levels of the comm
feed and the microphone signal in headphones without affecting the microphone signal sent to the
wireless transmitter.
Boom Operator