Subject: Re: [linux-audio-user] Re: My Edirol UA-20 arrived, but now I have a big problem!
From: Paul Winkler (pw_lists_AT_slinkp.com)
Date: Thu Feb 20 2003 - 21:51:29 EET
> Steve Harris hat gesagt: // Steve Harris wrote:
>
> > Yup, I've had ground loops on my dell when connecting to a projector
> > and a mixer. Put a DI box between the laptop and amp or unplug from
> > the mains :)
I've also found that (here in the US)
I can get by with plugging the laptop power supply into one of those
adapters that's supposed to be used to connect a 3-prong plug into
a 2-prong socket, with a little metal tab you're supposed to connect
to the socket's mounting screw to provide ground; but which
can also be used to break the ground connection just by ignoring
the little tab. For me, that kills the noise.
I suspect that a mains isolation transformer might also do the trick,
but I don't have one to try.
of course, the ground pin is provided for a reason...
so please don't sue me if you fry your laptop, or yourself.
YMMV and all that.
--Paul Winkler home: http://www.slinkp.com "Muppet Labs, where the future is made - today!"
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