5
Digital Frequency Agile UHF Hand-held Transmitter
Rio Rancho, NM – USA
MICROPHONE ELEMENT
The UT400 includes the Lectrosonics VariMic mic element. The VariMic is a cardioid condenser back electret
microphone that is adapted for the unique circumstances of wireless microphones. The problems it solves are
dynamic range, handling noise and low frequency noise (rumble or wind).
In the VariMic, an unusual pumped source FET circuit increases the usable dynamic range 12dB and greatly reduces
distortion, just as if the FET were being supplied with 48 Volts. In addition, a unique 16 position sensitivity control at
the element itself can adjust the sensitivity in 15 steps over a 15 dB range. This is in addition to the normal gain
control in the wireless microphone. The result is the widest dynamic range of any condenser mic in a wireless
microphone.
The VariMic has a three point damped rubber suspension to reduce high frequency handling noise and a generous
sized windscreen to keep wind noise and breath pops away from the microphone.