Clarkmc2
100+ Head-Fier
- Joined
- Dec 24, 2007
- Posts
- 443
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- 29
Microphonics are a translation of external vibration into signal modulation. Why would this matter with a headphone amp? Unless you are doing jumping jacks while listening or live next to a railroad line, what would be the source of the vibration? Tubes are not piezoelectric and do not vibrate on their own. I know walking across a floor can do it with a turntable, but a lot of stomping around while listening to headphones is unusual.
I will add that if a transformer hums that badly it needs to be rebuilt or replaced. Tube dampers would be a band-aid.
The usual source of vibration is the sound coming from speakers. In a really bad case it can lead to feedback oscillations, since the music vibrations are very closely related to the microphonic signal. This would not be the case with other sources of vibration.
Clark
I will add that if a transformer hums that badly it needs to be rebuilt or replaced. Tube dampers would be a band-aid.
The usual source of vibration is the sound coming from speakers. In a really bad case it can lead to feedback oscillations, since the music vibrations are very closely related to the microphonic signal. This would not be the case with other sources of vibration.
Clark