AV disaster: PowerCON plugged
No audio signal. Only humming. This is how 6.3 mm plug and PowerCON meet. There are XLR and Speakon combo connectors designed for things like this. But this is PowerCON connector designed to carry mains power. Read more on PowerCON at https://www.epanorama.net/newepa/2018/10/01/powercon-connector/ Fortunately the 6.3 mm plug here only connects to the center ground pin. →