Doepfer

Hi,

  I would like to appeal to anyone with experience in eradicating a
probable ground loop.  I've just done a bit of upgrading in my studio,
and I've developed a nasty buzzing in my system.  I've narrowed it
down to the interplay between Logic 7 and my analogue synth.  Of note
is that I have not changed anything inside the synth since before the
upgrade and that the problem exists even when the synth is turned off
but not when it is unplugged from the wall.  In fact, I've just been
jiggling about with the plug and the buzz come back as soon as the
earth pin of the plug makes contact.

  The problem also only exists when Logic is running but not when i
run things like iTunes etc.  It can also be controlled by the mixer;
turning down the channel volume or EQing it out work.  I've also gone
around turning off and unplugging everything except the computer,
synth and mixer, but the buzz remains.

Can anyone help?

Yours Aye

Stuadh