Anyone measure AC polarity as reversed on their Supratek ?
I have 8 month old Chardonnay and today did polarity check as having ground hum issue.
1. did polarity check on FIM wall outlet. It is correctly wired.
2. disconnected every cable from every audio item
3. used cheater plug
4. measured chassis voltage ( AC ) with cheater plugged in both ways
5. Chardonnay had noticeable difference in chassis "leakage" between cheater plug being plugged in correctly and reversed. The "reversed" position was signficanly lower. per Bound for Sound article, use lower voltage as best way to plug in equipment
Pioneer 45A DVD/SACD player had noticeable voltage difference but only 50% of Supratek. And Pioneer polarity was ok.
Dodd 50W power amp was next to impossible to determine as voltage readings ( less than 1 V ) were essentially the same.
I have 8 month old Chardonnay and today did polarity check as having ground hum issue.
1. did polarity check on FIM wall outlet. It is correctly wired.
2. disconnected every cable from every audio item
3. used cheater plug
4. measured chassis voltage ( AC ) with cheater plugged in both ways
5. Chardonnay had noticeable difference in chassis "leakage" between cheater plug being plugged in correctly and reversed. The "reversed" position was signficanly lower. per Bound for Sound article, use lower voltage as best way to plug in equipment
Pioneer 45A DVD/SACD player had noticeable voltage difference but only 50% of Supratek. And Pioneer polarity was ok.
Dodd 50W power amp was next to impossible to determine as voltage readings ( less than 1 V ) were essentially the same.