Sound Devices MM-1 - Manual (Page 9)

MM-1 User Guide and Technical Information
9
Radio/Television Announcer Position
The MM-1 is used as a microphone preamplifier for an announcer’s microphone and can pass a mix-
minus headphone feed to the announcer. Sending a line level signal from the announcer position
to the main mixing console is preferred over sending a mic level signal. When engaged, the limiter
prevents distortion during shouting and high microphone signal levels.
Announcer
In the set-up above the announcer has level control in the headphones of their overall audio level
and the level of the mix-minus feed.
Podium Microphones
Often podium microphones have long cable runs and “see” multiple audio consoles. Using an MM-1
between podium microphones and mixing consoles provides needed isolation for the microphone.
Because the MM-1 has transformer coupling for both inputs and outputs the potential for ground
loops is substantially reduced. Driving line level signals to mixing consoles and powering
microphones locally greatly improves the reliability and audio quality of a podium mic feeds. The
microphone is connected directly to the MM-1, which provides gain, microphone power, filtering,
and limiting. In addition, the microphone signal can be verified using the headphone output of the
MM-1.