Background: should I spend time and money searching for a high-bandwidth optical cable?
Assumption: There is a gound loop potential between components and that is bad for sound quality.
Question: Can I measure this potential to even see if it is an issue in my system?
I have a nice Fluke multimeter… I suspect I can disconnect cable hookups between two devices, and then simply measure any DC potential between the two units by touching the Fluke leads to say, the ground rings on RCA female jacks. If this will measure potential, then:
- DC only or AC too? Which is the baddie for sound?
- What is an OK potential? 0 only?
- What potential becomes audible and therefore worthy of isolating the units via an optical cable
- Should all my components be plugged into the same AC house circuit? Does this matter? (FYI, I have all my equipement plugged into a dedicated 20amp household circuit I wired myself, board to outlet, for audio.)
FYI: this is what hapens when you listen to your old Black Sabbath CDs and drink too many Pilsner Urquells… you are influenced by the dark arts…
Bruce in Philly