Tube dampers on VOX AC30

[sheendigs]

Hi There
Yesterday I was at my favourite music store
and the technician was dismantling a chinese AC30 with one neodymium speaker.
We found out that the three, 12AX7 had tube dampers.
Why is that so??..other Vox AC30 did not have them..
They say and I quote from somewhere:
...really improves the sound as well. Afterall, it's the tube being overdriven that you want to hear, not the microphonics of the tube rattling away from the cabinet vibrations..
Anyone has a better explanation or is that quote the right reason?
The rings look like those ones..But they have a groove around and are inserted in the chassis holes..where each one of the tubes are inserted..
Does it means that AC30 now generate more vibrations than ever? Sheendigs

[grip]

Hi sheendigs,

I guess it looks like they may be suffering from hemorrhoids ;D


Kind regards

grip

[Charlie Hall]

Originals had metal shielding covers didn't they?
Regards,
Charlie

[Cruachan]

Hi sheendigs,

You might find these links interesting:

www.eurotubes.com/euro-i.htm#12. (Questions #8 and #9)

herbiesaudiolab.home.att.net/index.htm

herbiesaudiolab.home.att.net/ultra.htm

I fitted an UltraSonic 9 damper on each of the tubes in my Fender Blues Junior (3xECC83s and 2xEL84s) and it made a world of difference to the quality and clarity of sound from this otherwise great amp. Tubes should last longer as well.

Regards,

Mike

[sheendigs]

Hi Mike
Thanks for the information.
I had already read what you indicated.
But, my doubt was why did they not use that damper on the other AC30 made before and suddenly they begin to use it now.
Is it because of a new design or because they had some problems and they suddenly discovered that this would help them?
I tried to search for something on that on the Internet and did not find a clue...perhaps I will have to ask VOX or Korg in an e-mail..
Sheendigs