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In the Forum: Melquiades Amplifier
In the Thread: Single-stage Melquiades vs. DHT amps
Post Subject: Tube sound and vibrationPosted by drdna on: 1/28/2009
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 Romy the Cat wrote:
 drdna wrote:
As I had been looking at all these tubes I began to also inspect their interior construction. This will amuse you: one thing I would do is to hold the tube right up to my ear so the glass would be touching and thus mostly damped. Then tapping the tube slightly would cause the internal cathode and anode to vibrate a bit, making a noise. There was a correlation between the type of noise and the sound the tubes in the stereo would make when music was played.
If you feel that you are able to get the correlation between the type of noise and the sound then it is fine but I feel that it is more contrived self-convincing.
I can only report what I have observed. I did not come up with a hypothesis first. If I had, I would have guessed that the tubes with the least vibration would have the best sound. This is not the case. The tubes that sound best have a specific sound they make. I would describe it like a water drop sound or the sound of striking the tabla. I have no idea why.

Adrian

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