BC300 Line out hum

Kisu

Kisu

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Sep 28, 2010
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So I got the BC300 that I won in Christmas contest. Lovely combo but there seems to be something wrong in line out circuit. It makes really loud humming noise when trying to record on computer.

I made a quick comparison, both are recorded exactly the same way. First one with BC150 and the second with the BC300
View attachment Tapping 150.mp3
View attachment Tapping 300.mp3

Is there a fault in circuity or is it just like this ? Have other BC300 owners experienced this ?
 
I've had two BC300s, both with the same issue. What is the possibility that the third combo will do just the same thing ? I don't want a new one sent to me if it has the exactly same fault. I'd rather take this one to tech
 
Is this a line out or a D.I. Out?
Always use D.I. for recording. Use the ground lift switch if you get a 50hz hum.
 
Yeah try the DI. Line out's don't usually have a ground lift
 
The DI out sounds great, nothing wrong in there. I was just confused because I have before only had combos the with line out and it's worked just fine. Nice to hear there's nothing wrong in this combo.
Thank you :)
 
Might be just the power circuit in your house making the hum.
 
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