u/Timely-Substance1961

I was wondering how many vocalists, such as Ruben from Devourment or Angel from Cephalotripsy, do epiglottal/arytenoid gutturals (which are a very quiet technique) while cupping the mic with no feedback. In my country there's only 2 bdm bands so people responsible for live EQ and tone usually have no idea what to do when someone is doing quieter vocals resulting in tons of feedback and an overall shitty mix.

Does anyone have any tips/instructions on how to eliminate or minimize feedback while performing quiet gutturals and cupping the mic?