Audio Technica AT 4081 hum

N

noto

New member
I bought the AT 4081 and it's great for classical flute, the trebles are very smooth, not harsh at all.
BUT
there seems to be a bit of hum in the mic.
My condensor mics have a hiss for their self-noise but this seems to have a faint hum.
Is this normal for this mic?

Thanks,
 
I had the same problem with a 4033. I took it to a buddy who does minor mic mods. He found that the coating on the inside of the capsule housing was preventing the mic from grounding properly. With a few strokes of sandpaper and the addition of a very small piece of copper stranding sandwhiched between the threads, everything was fine.
 
It really depends on how much gain your are using from your soundcard. How bad is the hiss with no gain, miking vocals/instrument in close? You would think that a $700 mic of outstanding quality would have no self-noise. ;)
 
I just realized that I never followed up with this thread.
I returned the defective AT 4081 and the replacement has no hum and very low self noise.
 
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