Insane feedback at corporate meeting
I'm not a live sound engineer, I tune the audio in ambulance/police radios, but I'm always told to do the live sound for company-wide corporate presentations for the CEO and top level management. I'm not very good but there is no one else.
They insist on using lapels and I really struggle with feedback. I feel like I've done everything I can:
- swapped to cardioid lapels
- moved the speakers as far forward and as wide apart as possible (they seem to always stand right next to them no matter where I put them)
- tried to give them a brief of what to do (most don't listen)
- made sure the mics are placed correctly (because they insist on lapels, they swap them around because we only have 3, so they end up in all sorts of funny positions, sometimes upside down)
- sent the mixer outputs to a sound card for parametric EQ (has crashed twice recently - i know this isn't a great thing to do but it's all I have)
Despite all this, I still get insane feedback and I struggle to get people to understand. They always think I'm an idiot for not just 'turning it up'. I'm 99% sure it's the room causing the issue. We do it in our cafeteria and the ceiling is quite low.
Does anybody have any tips for what I could try next? I thought about trying to suggest the idea of headsets instead?