See the second paragraph of page 2 of this Jensen paper. A key factor in how much hum reduction would result is the stray capacitance within each component between each of the two ac input lines and chassis, particularly stray capacitance in the power transformers of the components, and how similar or dissimilar those stray capacitances happen to be. So while I would expect there to be SOME improvement, the amount of improvement figures to not have a great deal of predictability.Al,
11-06-11: Almarg
My thinking as well.
>>>>>>>
I took some measurements from each amp using the ground tab on a cheater plug with nothing turned on, just plugged in. I'm seeing 16 vac on the ground tab from one tube amp and 14 vac on the ground tab with the other tube amp. The SS amp shows no potential. I didn't bother measuring the ac current.
11-06-11: Dan_ed
Dan_ed,
If you are checking for the proper AC polarity orientation of the primary winding of each amp's power transformer nothing can be connected to the input of the amp/s. Also equipment ground of the amp/s has to float. (Amp is isolated)
The ground cheater you use needs to be the non polarized plug type or you will need to trim down the wider blade so you can reverse the plug in either direction.
The lower measured voltage reading is the correct polarity orientation.
Post back your results.
http://www.audioasylum.com/audio/general/messages/449743.html
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