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Old 16th March 2012, 12:46 PM   #11
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Thank you guys! Those comments greatly reassure me. I thought that it could be harmless but, due to my limited experienced with valves (that will be my first tube amp), I preferred to get a more fundamented opinion.

Thanks for all once again!
Best regards
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Old 16th March 2012, 12:52 PM   #12
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the real problem will be getting the glass out of your head!

(just to say...people are addicted to vacuum tubes! )
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Old 16th March 2012, 07:39 PM   #13
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Yes, thanks to all of you for the replies.

Scott
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Old 17th March 2012, 02:21 AM   #14
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Another reassuring reference point. I've got a noval tube with a chunk of glass running around loose inside. It's never given me any problem.

Click the image to open in full size.
http://i69.photobucket.com/albums/i4...s/P1100245.jpg
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Old 17th March 2012, 09:16 PM   #15
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that a 12bh7a?
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Old 17th March 2012, 09:38 PM   #16
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the piece missing in this picture

Click the image to open in full size.

is a finger long and keeps rattling inside the tube..nothing happened yet.
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Old 20th March 2012, 03:28 PM   #17
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Another question related to an inexperienced user with valves. I got two of the KT88 valves and noticed that, if lightly finger tip beated, they somehow rattle. BUT one of them tend to rattle quite more than the other.

I suppose that this poses no problem at all, but would like some personal opinions/experencies from people that has been playing around with valves for a while. Do they use to rattle, does it vary from model to model, can it affect microphonics, etc...?? Just out of curiosity
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Old 20th March 2012, 06:38 PM   #18
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I'd check them for shorts before worrying about microphonics .

v4lve
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Old 20th March 2012, 07:09 PM   #19
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Old 20th March 2012, 08:00 PM   #20
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allthrough a short is Very unlikely .

the only place you'd expect shorted valves would be in old radio's .
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