Little Dot Tube Amps: Vacuum Tube Rolling Guide
Feb 9, 2014 at 5:11 AM Post #4,966 of 13,434
Mordy, what about using two 1/2 6SN7's so many variants out there.
 
Or even two 6SJ7's strapped in triode mode?
 
I have used both the 6CG7 and 6FQ7 in the same circuit and never had any problems.
 
EDIT:same
I never tried them in my LD.
 
Feb 9, 2014 at 8:15 AM Post #4,967 of 13,434
Hi, one of my 6HM5 tubes is generating a buzzing, I swapped them over to see if it was the tube.
 
If I touch it it stops for a second or two, anyway to fix it? It wasn't doing this until last night, it's the tube that flashes up if that helps?
 
Thanks.
 
Feb 9, 2014 at 10:45 AM Post #4,968 of 13,434
  Hi, one of my 6HM5 tubes is generating a buzzing, I swapped them over to see if it was the tube.
 
If I touch it it stops for a second or two, anyway to fix it? It wasn't doing this until last night, it's the tube that flashes up if that helps?

 
There might be some tiny pieces of debris causing the problem, and if so, flicking the tube with your finger might dislodge this material. But if that doesn't work, then it is likely that the tube is simply bad and you might want to contact the vendor to ask for a replacement. Good luck!
 
Feb 9, 2014 at 7:24 PM Post #4,970 of 13,434
anyone consider rolling the Psvane UK-6SN7?
 
Feb 9, 2014 at 9:08 PM Post #4,971 of 13,434
  anyone consider rolling the Psvane UK-6SN7?

 
I would definitely like to try one of these, but they haven't gotten much attention, much less love, in the 6SN7 Addict's thread, and consequently I have no idea if these tubes are really worth $100 each. Until I can find out more, I am simply unwilling to spend that much for a tube that may be no better than a nice $25 Sylvania 6SN7GT.
 
But of course, it would be great if someone could get their hands on one of these and compare it to the "antiques" most of us are listening to. :)
 
Feb 9, 2014 at 9:15 PM Post #4,972 of 13,434
   
I would definitely like to try one of these, but they haven't gotten much attention, much less love, in the 6SN7 Addict's thread, and consequently I have no idea if these tubes are really worth $100 each. Until I can find out more, I am simply unwilling to spend that much for a tube that may be no better than a nice $25 Sylvania 6SN7GT.
 
But of course, it would be great if someone could get their hands on one of these and compare it to the "antiques" most of us are listening to. :)

 
I agree about the cost... I'm currently burning a very noisy Sylvania 6SN7GTB in... its getting better... so far very musical, lush, with good extension and separation... DELICIOUS!
 
Maybe someone here will be willing to test one lol (I'll probably get around to it when things calm down here)
 
Feb 9, 2014 at 9:23 PM Post #4,973 of 13,434
The tube I really want to try is the Mullard ECC32, but as one tube typically sells for $200 and more, I will need to win the lottery or get incredibly lucky for that to happen. lol :)
 
Feb 9, 2014 at 10:17 PM Post #4,974 of 13,434
Or save a few dollars here and there... Skimp on a meal couple times a week (cereal for dinner maybe?)
 
Feb 10, 2014 at 4:22 PM Post #4,976 of 13,434
I received a 1943 RCA 1633 this morning. The 1633 is a 25V version of a 6SN7 designed for use in aircraft in the 1940s. At $7.49 shipped, I figured it was a cheap way to try a 25V tube in my LD. And going by memory, it has the same delicious sound as my 1945 RCA gray-glass 6SN7GT.
 
Oh, even though my AC adapter is rated for 24VDC, it is actually putting out 33VDC, so fortunately, I didn't have to purchase another adapter in order to run 25V tubes. :)
 

 

 
Feb 11, 2014 at 9:10 PM Post #4,977 of 13,434
Wow has this thread ever slowed down...

Everyone must have found some great tubes! I miss the good ole days of just switching from B7G's to B9A's so much excitement and activity in the thread.

Crickets...
 
Feb 11, 2014 at 9:27 PM Post #4,978 of 13,434
Wow has this thread ever slowed down...

Everyone must have found some great tubes! I miss the good ole days of just switching from B7G's to B9A's so much excitement and activity in the thread.

Crickets...


I've noticed that too. Although lately all my tube rolling has been going on with my Bottlehead Crack!
L3000.gif

 
Feb 11, 2014 at 9:30 PM Post #4,979 of 13,434
I'm awaiting a bunch of tubes to review...
 
Feb 11, 2014 at 9:30 PM Post #4,980 of 13,434
Wow has this thread ever slowed down...

Everyone must have found some great tubes! I miss the good ole days of just switching from B7G's to B9A's so much excitement and activity in the thread.

Crickets...

http://www.youtube.com/watch?v=pShuE09VsjI              
 

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