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Sujet Humming sound when on big PA

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Hello everybody

I had a hugh issue last night. I had a big humming sound when connected to the PA. It was not my PA i have never heard this on mine.

First my setup
Toshiba Laptop
Numark M2
Numark DMC2
Hercules Deejay Trim
Numark CUE LE 5.2.1

The sound was a typical sound of a harddrive working. My first thought was that the USB cable from the Hercules was to close to something else so I moved that and no change. I moved the output from the mixer and no change. I tried another socket for the laptop and still the same issue. When i pulled the powercable to the laptop it stopped.

I have read that i can use a groud loop isolator but would this help? According to me the problem should be the powercable to the laptop. The socket in the laptop sits very close to the USB sockets in the back where i have my Hercules connected.
 
Posté Sun 13 Nov 11 @ 3:14 am
You need a ground loop isolator, that should stop the hum.
 
Posté Sun 13 Nov 11 @ 5:23 am
 
Posté Sun 13 Nov 11 @ 8:48 am
Jensen_sbp wrote :
I had a hugh issue last night.


Yeah that guy who plays House can be a real pain.

:-)
 
Posté Sun 13 Nov 11 @ 10:48 am
groovindj wrote :
Jensen_sbp wrote :
I had a hugh issue last night.


Yeah that guy who plays House can be a real pain.

:-)



I don't get it? :)
 
Posté Mon 14 Nov 11 @ 8:50 pm
Your not the only one?
 
Posté Wed 16 Nov 11 @ 12:05 pm
 
Posté Wed 16 Nov 11 @ 2:19 pm


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