I assume the NAIM has a three prong plug? If so, what happens if you lift the safety ground on it?
Why is a 1.5-2 volt AC signal on my Neutral line?
I have several music sources e.g. DVD, Phono, DAC, Tuner etc...
I just purchased a NAIM integrated amp and I am experiencing a hum but only from the DVD player.
I have circuit tested the entire house wiring and all is well.
After a lot of investigation I found that some units have a 1.5-2.0 volt AC signal (sounds like a 60Hz signal i.e. hum) between the neutral side of the interconnect and the earth at the power bar.
Panasonic, Pioneer and Sony units I have measured all have this signal present and it varies between 1.5 - 2.0 volts
Luxman and Cambridge Audio gear does NOT have the signal present
All units have a polarized plug with no ground pin
How can the hum be eliminated using the Pioneer DVD with the NAIM Amp?
Thanks
I just purchased a NAIM integrated amp and I am experiencing a hum but only from the DVD player.
I have circuit tested the entire house wiring and all is well.
After a lot of investigation I found that some units have a 1.5-2.0 volt AC signal (sounds like a 60Hz signal i.e. hum) between the neutral side of the interconnect and the earth at the power bar.
Panasonic, Pioneer and Sony units I have measured all have this signal present and it varies between 1.5 - 2.0 volts
Luxman and Cambridge Audio gear does NOT have the signal present
All units have a polarized plug with no ground pin
How can the hum be eliminated using the Pioneer DVD with the NAIM Amp?
Thanks
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- 30 posts total
I just purchased a NAIM integrated amp and I am experiencing a hum but only from the DVD player. DVD player connected to a TV? TV connected to CATV? Disconnect the incoming CATV coax from the CATV box then check for hum. If no hum..... Buy a Jensen ISO transformer.... |
If I understand your post correctly, it sounds to me like you've got a defective interconnect (or two) somewhere. I think you are saying that with ALL of these components simultaneously connected into the system, if you connect your meter between the ground sleeves of various rca connectors and safety ground on the power strip, in some cases you see a substantial voltage and in some cases you do not. If that is the correct interpretation, it would seem to say that a cable somewhere is not properly tying the grounds of the connected components together. Regards, -- Al |
- 30 posts total