[sdiy] Noise from a (perfect) Yamaha CS50

[The Laboratory of Sound]

If there is a ground loop problem I would say your friend is hearing 
hum in his audio signal. If that is the case, it could be a grounding 
problem in his studio. He could try plugging the CS50 in another outlet 
or physically moving the instrument to see if that helps. Sometimes the 
headphone output is less noisy. Or he could hook it up to a DI with 
ground lift option engaged.

Cheers,

Jack




On 2013-12-05 11:34, Antonio Tuzzi wrote:
> Hello friends
> 
> 
> I have a friends with a Yamaha CS50 that is noisy when connected in 
> his studio
> is clearly present in the audio kind of GND effect
> 
> 
> 
> but is perfect when used in another studio (or when he brings it to
> the techician, that say : IT'S PERFECT!)
> 
> 
> what could be the problem ? (GND Loop problem ? but why only with the 
> cs50 ?)
> and why only with this keyboard ?
> 
> and what he can do to solve it ?
> 
> 
> ciao
> 
> Antonio
> 
> 
> 
> 
> 
> 
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