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Laptop Hum


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I've included this in another topic but as a foot note and wondered if anyone can help?


I've not engineered for a few years and on my return want to plug my laptop in to the mixing desk. There's what sounds like a ground loop hum on the desk when I do this.


Should a DI fix this and if so does it matter if it's active or passive? (I guess they all have ground lift?)




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Short answer - you need a transformer, or a DI with ground lift.


Long answer - see here, and various other similar threads.



Moderation: Thread closed - please direct followups to the one referenced above - if we keep all of this stuff in one place, it makes it easier to search in future.

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