Hi Everyone,
I had a hum problem from my custom built preamp. But when I tried to push down or tightened the bolds to the chassis most of the hums are gone (but still very little hum from the speakers). I am thinking about to put something like a damping sheet ERS under the interstage transformers to completly take out the hump. What are your suggestions? Are there any good ideas? Thanks in advance for help.
Regards,
Tan
