Feliks-Audio ELISE...New thread.

Nov 6, 2015 at 12:01 AM Post #1,486 of 13,924
I am not familiar with that tester, so I don't know what the value would be for new. However, I think it is safe to say that there is not a whole lot of life left in these tubes as they measure very close to the minimum, which is 50. That said, they should still be good for at least several hundreds of hours, so they would give you a chance to see if you like the sound of the GECs. And if you do, enjoy them for as long as they last and keep an eye out for another pair, with more life in them.


Thanks G, what about the rattle inside one tube? Must be broken glass, shouldn't worry me I guess.

I'll give them a try if my headphones are not sold by the time they arrive :D My next headphones are stuck in Australia :(
 
Nov 6, 2015 at 12:03 AM Post #1,487 of 13,924
IMO $150 is a good price for a WE 421A but then again I always pay a premium for my nearly new tubes. After the blown up 5998, I stayed away from tubes that look like zombies.

Not many people buy 421A though not sure if it's worth spending a premium for those.


What do you mean by tubes that look like zombies? I have the option to skip this purchase as it is a 2nd chance offer.
 
Nov 6, 2015 at 12:07 AM Post #1,489 of 13,924
What do you mean by tubes that look like zombies? I have the option to skip this purchase as it is a 2nd chance offer.

 
After some 70 years, it is impossible to know if a tube is NOS. And even it is NOS, chances are that it was not stored under clean, environmentally controlled conditions. So you really can't judge the tube's electrical health by appearances. IMO, if it measures NOS, that is all that matters. Clean the pins thoroughly and 99 times out of 100, it will be fine.
 
Nov 6, 2015 at 12:08 AM Post #1,490 of 13,924
What do you mean by tubes that look like zombies? I have the option to skip this purchase as it is a 2nd chance offer.


Hahaha..I give you an example. I bought these 4 RCA coin base some time ago. They were advertised as being dug out from old church organ. When I received them they have mud on them like they were recovered from underground. I clean and polish them and was lucky they turn out like new. It could have been zombies though.
 

 
Nov 6, 2015 at 1:01 AM Post #1,491 of 13,924
happy_face1.gif
 Oh wow 
 
CanJam Singapore 2016 -- the first CanJam in Asia -- is on!   20-21 Feb 2016.​
 
Oh Singapore how can I forget you...must try and make it. Bring Elise !!!​
 
Nov 6, 2015 at 2:04 AM Post #1,492 of 13,924
Guys I found it !!!  I found the end.
 
FDD20/Mazda 6N7G with Chatham 6AS7G.  10/10
 
This pairing is dangerous. It's the point of no return.
 
This is JAWS...don't go in the water.
 
Wow the BITE is real.
 
Mordy try this pairing and be prepared not to sleep. I'll get a picture. Wish you can hear the sound.
 
Mazda has more attack, bite and energy than ECC31. Combine with FDD20 it's explosive.
 
ECC31 and Mazda are both good though. There are times you don't want to rule the dance floor. You just want ballet polish that's when you want ECC31.
 
FDD20 with Mazda or ECC31 are so incredibly good. I would switch to other tubes and forget about them only to return and go 'WHAT'??? What is this unearthly sound. Total disbelief.
 

 
Nov 6, 2015 at 4:09 AM Post #1,494 of 13,924
How do I interpret these dates codes on the NU I just bought.
 
3 National Union 6A6 Matching date codes UB Tested at 100/100 on my Triplett 3413 NOS
 

 
Nov 6, 2015 at 8:59 AM Post #1,497 of 13,924
  Guys I found it !!!  I found the end.
 
FDD20/Mazda 6N7G with Chatham 6AS7G.  10/10
 
This pairing is dangerous. It's the point of no return.
 
This is JAWS...don't go in the water.
 
Wow the BITE is real.
 
Mordy try this pairing and be prepared not to sleep. I'll get a picture. Wish you can hear the sound.
 
Mazda has more attack, bite and energy than ECC31. Combine with FDD20 it's explosive.
 
ECC31 and Mazda are both good though. There are times you don't want to rule the dance floor. You just want ballet polish that's when you want ECC31.
 
FDD20 with Mazda or ECC31 are so incredibly good. I would switch to other tubes and forget about them only to return and go 'WHAT'??? What is this unearthly sound. Total disbelief.
 

Guys, why do you use one FDD20 tube and not two? Is there an issue with the external heater circuit? Do you need two circuits to power both tubes?
 
Also, is it a good price for FDD20, 30 euro for two tubes? I might buy this tube and give it a go, but I don't want to do a combo thing, it looks highly asymmetrical LOL
 
Nov 6, 2015 at 9:02 AM Post #1,498 of 13,924
Thanks G, I am still thinking of GEC tubes in my Elise :/ Can't make up my mind, I don't want to disappoint myself if there is an issue with the rating of those tubes I just won.
 
Quote:
   
Broken pieces of glass and mica rattling around inside tubes is quite common. I try to keep the glass in the bottom of the tube where I know it won't cause any problems.

 
Great information, I wish I could learn how to tell if the tube is rating good or bad. I am such a noob.
 
   
After some 70 years, it is impossible to know if a tube is NOS. And even it is NOS, chances are that it was not stored under clean, environmentally controlled conditions. So you really can't judge the tube's electrical health by appearances. IMO, if it measures NOS, that is all that matters. Clean the pins thoroughly and 99 times out of 100, it will be fine.

 
Nov 6, 2015 at 9:07 AM Post #1,499 of 13,924
 
Hahaha..I give you an example. I bought these 4 RCA coin base some time ago. They were advertised as being dug out from old church organ. When I received them they have mud on them like they were recovered from underground. I clean and polish them and was lucky they turn out like new. It could have been zombies though.
 

Right now, you're the most active tube roller on Elise and probably on head-fi. Someone sent me a PM on diyAudio saying, Elise thread has become a tube rolling thread rather than an amplifier thread.. Which, I don't know is good or bad LOL It definitely sounded ****ed up!!! Haha!!!!!!
 
Nov 6, 2015 at 9:11 AM Post #1,500 of 13,924
2x FDD20/Mullard 6080 reporting in @ 61 hours on the new '20:

Bass has improved dramatically in the new tube.

When new, the differences in the 200+ hour FDD20 and NOS tube are easily heard. New tube lacked bass, less space/air in the mids, can sound 'congested' on busy passages.

They are coming closer together now, with the bass having firmed up. You can hear that the midrange in the more mature tube is better. Looking forward to the younger tube catching up, in the midrange department.

A bonus comes, in that this is the coolest my amp has ever run. Having both drivers up off the deck, and not drawing any Elise current to run the drivers, has made a nice temperature difference. My am deck is "only warm" to the touch.





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