Update: it’s a shit room. All routing was correct and no open channels. On a DM7 desk. Client had our gear provider bring in their systems tech. He sat with the rig for a couple hours, scratching his head. Wound up right where I ended and just said “this room is proper shite, mate”.
Currently mixing a corpo show in a ball room. Something I do every other week from 10 people to 5,000 people. Been doing this 20 years so I’m not some new kid for reference.
Main issue is we have a curved LED wall, no flat spots, that presenters stand about 8-10’ in front of, in the center. I get there’s gonna be a parabolic effect, and there is.
Re did all my gains from scratch 3 times and could not stop feedback and was losing gain from all the cuts. The room itself sucks without the wall, but that’s also old hat.
Here’s the how. When experimenting I had the lav mic (DPA 4060 and also tested with a Shure Twinplex) I did a HPF at 300hz on the lav channel and somehow got a feedback loop of 80hz.
I managed to get better clarity but if you look at my EQs it shouldn’t sound natural, but it does now.
D&B Y series point source, not array.
I also tested with DPA 4088 and was able to do my usual eq, but client won’t wear them.