Noise on cardioid mode (U47 tube poctop) (SOLVED)

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hugo

Well-known member
Joined
Feb 26, 2016
Messages
510
Location
Paris
Hi,
I have a problem with my U47 that i just finished. Omni mode is ok, but when i switch to cardioid, i have a noise... Can somebody help me to solve this ? Which components are involved in cardioid mode vs omni ?
It is the Poctop version, with 2 tubes on parallel...
I switched the capsule, the tubes, and the problem stay the same
Thank you very much for your help


Here is the solution : http://groupdiy.com/index.php?topic=63415.0
 
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