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5
Sensitivity Settings
Microphones
Introduction
Your Listen microphone is designed to provide high quality audio when used with a Listen LT-700
Portable FM Display Transmitter. Listen microphones will work with LT-700 units on either 72 MHz or
216 MHz. Your Listen microphone will also work with any product that supplies 3 VDC phantom
power and conforms to the diagram below.
To achieve the desired audio quality from your Listen microphone, it is important to use it as
instructed. The instructions for your microphone provide guidelines on placement and use.
If you experience trouble with your microphone, check the troubleshooting section of this manual
first to try to resolve the problem. If you are still having difficulties, contact Listen support (support
information available in the back of this manual).
3.5 mm jack
When you connect your Listen Microphone to your LT-700 Portable FM Display Transmitter, you
must make sure that the microphone sensitivity switch (located inside the front cover of the
LT-700) is set to the sensitivity specified for your microphone. If this switch is not in the correct
position, your audio may sound low or distorted. Please note the sensitivity setting for your
microphone and check the switch setting in the LT-700 prior to using your Listen
equipment.
The microphone sensitivity switch is located
inside the front cover of the LT-700.
Part # Microphone Type
Mic sensitivity
Switch Position
LA-261 Lavalier Microphone omni-directional MED
LA-262 Over-the-Head Microphone uni-directional MED
LA-270 Noise Canceling Microphone uni-directional MED
LA-272 Over-the-Head Mic with Earphone uni-directional MED
LA-274 Hand Held Microphone omni-directinal HI
LA-276 Collar Microphone uni-directional HI
LA-277 Conference Microphone omni-directional HI
LA-278 Behind-the-Head Microphone uni-directional MED
LA-279 Over-the-Ear Microphone-Presentation Style omni-directional MED
Important Information About Microphone Sensitivity Settings