As Mike said, the Primary Source Expander (PSE) already available in dPack is similar in functionality to the 5045 and other source expanders. Definitely try it out if you haven’t. It works great with lectern mics, LAV mics, etc. and can definitely help reduce feedback by lowering the signal level whenever a person stops talking (even between spoken phrases), thereby breaking any feedback loop that might be starting to build up. The source expander is similar to a gate, but it is much more transparent IMHO and much easier to get great results without the subject sounding like they are “cutting in and out” like you get with a gate a lot of the times.