I was running sound for a school musical this week and encountered a problem. I was using the schools Sennheiser G3's 4 channels of CH70 with rf distributor, my Sennheiser g2's on 830 MHZ -832 MHZ running 4 channels and rf distributor. I've used these with this school many times in the past with no issues. This week however they required an extra two mics so I used two Sennheiser XSW-2 systems on CH 38 using the whip aerials. All was fine during the two days we rehearsed but during the first show with an audience one of the XSW mic's was extremely distorted and practically unusable. I only had 20 minutes during the break so after locating the transmitter checked the capsule first to see if that was the problem but it was fine. I changed frequencies and it improved a bit but was still quite bad. We had further rehearsals the day after plus a matinee performance so I changed the frequency again and it was fine during the day but it started to intermittently distort again. Not as bad as the day before but it was certainly a problem.
The only thing that changed as far as I am concerned was the two night time performances were populated by 250 adults mostly I'm sure with mobile phones and the matinee was with primary age school children who I assume didn't have mobiles, so I am wondering if this was causing a problem. It must be noted that despite the distortion I had a full RF signal at all times and there was no ghosting or searching for signal etc.
Does anyone know what happened here please?
Rare
Rare
