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Little Dot Tube Amps: Vacuum Tube Rolling Guide - Page 332

post #4966 of 6839

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.


Edited by rosgr63 - 2/9/14 at 2:15am
post #4967 of 6839

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.

post #4968 of 6839
Quote:
Originally Posted by chiman View Post
 

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!

post #4969 of 6839
Possibly try cleaning the pins as well.
post #4970 of 6839

anyone consider rolling the Psvane UK-6SN7?

post #4971 of 6839
Quote:
Originally Posted by kvtaco17 View Post
 

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. :)

post #4972 of 6839
Quote:
Originally Posted by gibosi View Post
 

 

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)

post #4973 of 6839

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 :)

post #4974 of 6839
Or save a few dollars here and there... Skimp on a meal couple times a week (cereal for dinner maybe?)
post #4975 of 6839

Here is an example what kind of driver tubes i am using with my DIY amp, that uses 6N6P powertubes.

http://www.head-fi.org/t/698282/my-diy-headphone-tube-amps#post_10255710

 

I think that RCA 6AS7G is going to stay many hours on this amp.

post #4976 of 6839

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. :)

 

 

post #4977 of 6839
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...
post #4978 of 6839
Quote:
Originally Posted by TrollDragon View Post

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:

post #4979 of 6839

I'm awaiting a bunch of tubes to review...

post #4980 of 6839
Quote:
Originally Posted by TrollDragon View Post

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              


Edited by MIKELAP - 2/11/14 at 6:32pm
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