boji
Well-known member
Hello yall,
I was reading Ian's helpful sheet on proper grounding of consoles, and I got to the part about phantom Ov issues that can arise. Advice was to have a separate supply for phantom, but in my case, the PSU shares signal com with phantom com over the same pin on the power connector.
Any advice how to best treat phantom with this setup? I can isolate P-com with a different PSU if needs be, or just run phantom 48v and P-com to 500 series backplanes that house mic pre's-- however I'm afraid since the backplanes are getting acom from the busbar well (and now also from phantom run), I'll have created a ground loop potential.
ref: http://www.ianbell.ukfsn.org/EzTubeMixer/docs/EzTubeMixer/SimpleMixer/grounding101v2.pdf
I was reading Ian's helpful sheet on proper grounding of consoles, and I got to the part about phantom Ov issues that can arise. Advice was to have a separate supply for phantom, but in my case, the PSU shares signal com with phantom com over the same pin on the power connector.
Any advice how to best treat phantom with this setup? I can isolate P-com with a different PSU if needs be, or just run phantom 48v and P-com to 500 series backplanes that house mic pre's-- however I'm afraid since the backplanes are getting acom from the busbar well (and now also from phantom run), I'll have created a ground loop potential.
ref: http://www.ianbell.ukfsn.org/EzTubeMixer/docs/EzTubeMixer/SimpleMixer/grounding101v2.pdf