yes, it happens with my laptop too, even if i have the audio interface powers from its own psu...

so, when i want to record audio in the laptop,  i just unplug the laptop from the mains and power it from its battery....

Bakis Sirros - Parallel Worlds / Interconnected / Memory Geist

1 group owner

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Athens - Greece

--- On Sun, 6/14/09, Florian Anwander < fanwander@... > wrote:

From: Florian Anwander < fanwander@... >
Subject: Re: 1 Ground loop hum
To: Doepfer_a100@yahoogroups.com
Date: Sunday, June 14, 2009, 3:08 PM

















Hi Peter



> If I plug headphones directly into a module's output then I don't hear it. When I plug the module's output into my audio interface, then I get the noise/hum. This is what leads me to believe it's a ground loop. Am I correct If so, how do I remove it safely A DI box with a ground lift feature

I assume it is an interface, which is powered via the datacable from the

computer. If i am right, then the solution will be either powering the

interface via an separate powersupply, or connect the Doepfer to the

computers interface via an passive DI split box (means ot

electronically, but true split with a transformer) .



This problem happens very often with computers with separated LCD

monitors (e.g. at our sessions it happes to two persons with Apple

MacMini plus monitor), but also sometimes with laptops.



Florian





























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