Review by Watfordvalves on 6L6 Power Tubes...

[wta]

I found this to be a good read...

http://www.watfordvalves.com/cgi-bin/documents/testreport_34.pdf

 

[edmiller9999]

While I found this review interesting, I think it's an opinionated statement about tubes that might actually be nearly impossible to locate.

Also, please correct me if I'm wrong, but since when did microphonics become a problem with POWER tubes? I thought power tubes just went flat, weak or dead. Microphonic noise is purely a weakness of a preamp tube, correct?

 

[wta]

While I found this review interesting, I think it's an opinionated statement about tubes that might actually be nearly impossible to locate.

Also, please correct me if I'm wrong, but since when did microphonics become a problem with POWER tubes? I thought power tubes just went flat, weak or dead. Microphonic noise is purely a weakness of a preamp tube, correct?

I'm not sure how a review can be anything but opinionated but I have seen many of the reviewed tubes on ebay or when I googled them but I didn't check all of them. Ya you got me on the micophonics question but I'm not sure why a power tube wouldnt suffer from that issue? I've got a sneeky feeling where gonna find out real soon though! ;-)

 

[crane]

Nope, could come from a powertube also. Not the same microphony but I clearly remember one of my 6L6GC in my 50/50 that made ringing tones when moved or gently touched, and even let hear the fan in the speaker.

 

[fluff191]

Straight from TubeDepot.com

http://www.youtube.com/watch?v=NAF42EwLzks