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ac plug noise ..
Posted: Thu May 09, 2002 10:23 pm
by task
there was a few posts regarding ac plug creating noise..
the solution is to pick up a ground lift unit/socket.
it cheats a 3 prong into a regular 2.
ask your local electronic store or any pro studio engineers, they will know about ground lift.
Posted: Fri May 24, 2002 9:59 am
by FORMAT
Do you remember if this affected PC or Mac notebooks or both? Would be interesting to know....
Thanks
Posted: Mon May 27, 2002 7:41 pm
by FrankH
Hello,
Mostly the ac plug is not the one that causes problems.
In most cases it is a ground loop in the audio setup.
eg. not proper grounded guitar amp, connected to the computer through a long cable or the computer directly connected to the PA.
With cable runs, audio cables, of over 10meters / 30feet it is recomended to use a DI box (ground isolator / transformer). Not on the power supply, but on the audio path.
It's best to have a stereo (or two mono) DI box (es) with on one side two Jack connectors (use a small plug to convert to cinch) and on the other side XLR, those 3 pin connector.
This will end all problems!
Hope this gives clarity.
Enjoy the music,
f