ViewSonic Pro8200 22
About the microphone input
If you wish to use a microphone, connect a 3.5 mini jack cable microphone to the
projector.
You can use a wireless microphone as long as a wireless module is attached to
the projector's microphone input jack and it works well with the associated
devices. To ensure a quality use of the wireless microphone, it is recommended
that your microphone conforms to the specifications listed in the table below.
Signal Parameter Min Type Max
Microphone Transducer Principle Dynamic
Impedance 300 1K ohm
Frequency response 600 16K Hz