ric8138

This was a new one on me, but apparently the motion detectors “chirp” in the 40k range. The mic picks it up and it messes with the compander circuit in the G3, causing a pumping volume sound. First time I’ve run into it in 30 years of sound.

Recently ran into an issue with ultrasonic security system messing with Sennheiser G3’s. Does anyone make a low pass filter to go between mic and transmitter to avoid this issue? We got around it with a wired boom and 2 hardwired lavs, but it was not easy. Please don’t tell me to just buy “Lectro”, I know that’s the long range answer, but when working on micro budget indies, it’s just not practical.