Woo Audio Amp Owner Unite
Feb 6, 2015 at 7:29 PM Post #32,611 of 42,298
^^^^

Very nice. Great looking pics.

2399 is like a 5998 isn't it?
 
Feb 6, 2015 at 8:11 PM Post #32,612 of 42,298
Feb 7, 2015 at 12:44 AM Post #32,614 of 42,298
   
Nice picture!!! Those internals look very WE-like to me. Is this a re-badged WE tube?

 
I don't see the bottom D-getters I have on my 421a tubes, but otherwise they look very similar (or are these rectifiers?).
 
Only repeating what I've heard, but... the WE tubes were screened for low noise for use in telephone systems.
 
Feb 7, 2015 at 12:46 AM Post #32,616 of 42,298
  Upgraded to the Chatham 2399. They sound so much better than the TS7236. One was a little microphonic but Herbie's tube dampeners seem to have cured that issue.
 

 
 

 
Nice looking glass... I've asked a couple of times about tube dampers, but haven't heard from anyone if people do / do not use tube dampers. I take it you've had a good experience with these?
 
Feb 7, 2015 at 12:54 AM Post #32,617 of 42,298
   
Nice looking glass... I've asked a couple of times about tube dampers, but haven't heard from anyone if people do / do not use tube dampers. I take it you've had a good experience with these?


This is my first experience with tube dampers and I'm very happy with them. Without the dampers, one of the 2399s picked up vibrations from typing or moving my hands on my desk. With the dampers, that problem is solved. Highly recommended if you have a microphonic tube.
 
Feb 7, 2015 at 1:05 AM Post #32,618 of 42,298
 
This is my first experience with tube dampers and I'm very happy with them. Without the dampers, one of the 2399s picked up vibrations from typing or moving my hands on my desk. With the dampers, that problem is solved. Highly recommended if you have a microphonic tube.


Interesting... I *do* have a couple of tubes that exhibit some noise, but it sounds more like sensitivity to EMI/RFI instead of the physical vibration. I have a lot of gadgets nearby...
 
I'm tempted to try these anyway.
 
Feb 7, 2015 at 5:36 AM Post #32,619 of 42,298
  Upgraded to the Chatham 2399. They sound so much better than the TS7236. One was a little microphonic but Herbie's tube dampeners seem to have cured that issue.
 

 

 

 

 


A+ Great pics IndieGradoFan
 
Feb 7, 2015 at 7:06 AM Post #32,620 of 42,298
  In other news, down on the low-end of tube rolling... Today I received my newly manufactured Telefunken E88CC-TK "Black Diamond" driver tubes from Tube Depot dot com (which I am impressed with, BTW - I asked for a matched pair and they wrote test values for each on the top of the boxes).
 
Cost effective, but I am curious where these were actually manufactured... no diamond on the bottom of the glass, but maybe that's over with for new tubes from Telefunken.

 
JJ. It's not a secret.
 
  1. http://www.telefunken-elektroakustik.com/products/tubes/
 
Feb 7, 2015 at 8:46 AM Post #32,621 of 42,298
 
   
Nice picture!!! Those internals look very WE-like to me. Is this a re-badged WE tube?

 
I don't see the bottom D-getters I have on my 421a tubes, but otherwise they look very similar (or are these rectifiers?).
 
Only repeating what I've heard, but... the WE tubes were screened for low noise for use in telephone systems.


 
Feb 7, 2015 at 11:06 AM Post #32,622 of 42,298
  Upgraded to the Chatham 2399. They sound so much better than the TS7236. One was a little microphonic but Herbie's tube dampeners seem to have cured that issue.
 

 

 

 

 

 
Gorgeous!!!!  Thank you for sharing.
 
Feb 7, 2015 at 12:23 PM Post #32,623 of 42,298
Feb 7, 2015 at 12:31 PM Post #32,624 of 42,298

 
Sorry... I must be missing something. I am talking about these things (see arrows I drew in the photo); do your tubes have something similar, I can't see them in your photo?
 

 
Feb 7, 2015 at 1:21 PM Post #32,625 of 42,298
 

 
Sorry... I must be missing something. I am talking about these things (see arrows I drew in the photo); do your tubes have something similar, I can't see them in your photo?
 

Like on picture no getter at bottom                                                                                                                                                                                                                                                                                                                                    
 

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