I think 572B's but they may be 811's.
Diet : They are 572B's - just dug them out.
5v power supplies
- IslandPink
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#16 Re: 5v power supplies
"Once you find out ... the Circumstances ; then you can go out"
#17 Re: 5v power supplies
I thought that might have been what you meant....IslandPink wrote: ↑Sat Nov 11, 2017 3:21 pm I think 572B's but they may be 811's.
Diet : They are 572B's - just dug them out.
We(or at least I was) talking about Svetlana SV572, completely different valve. I remember back in the day I had to qualify every reference to make sure people with 572Bs knew what I was talking about.
I still wonder why Svetlana named them the same as an existing valve. go figure!
maybe 572Bs are valuable as well.
There's nowhere you can be that isn't where you're meant to be
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#18 Re: 5v power supplies
Umm.....
Sorry to keep this thread off-topic, but searching via TDSL shows Svetlana have ( had ) a 572B, a SV572-160 a SV572-10 , and a SV572-3 maybe more. I think they are all 6.3V/4A filament.
The SV572-160 looks near as dammit the same as a 572B, not sure why both exist. Must say I'm confused. What are the ones you have ?
Sorry to keep this thread off-topic, but searching via TDSL shows Svetlana have ( had ) a 572B, a SV572-160 a SV572-10 , and a SV572-3 maybe more. I think they are all 6.3V/4A filament.
The SV572-160 looks near as dammit the same as a 572B, not sure why both exist. Must say I'm confused. What are the ones you have ?
"Once you find out ... the Circumstances ; then you can go out"
#19 Re: 5v power supplies
not sure about the sv572-160, never seen one but from memory Paul might have had a pair...
I have sv572-3 I think 2 pairs
sv572-10 maybe 1 pair left
sv811-3 3 pairs
sv811-3a 1 pair
most people in the states were aware of the distinction IIRC between the old 572b and the newer svetalana valves which I believe were invented in the mid 1990s and heavily promoted by Eric Barbour. I liked them(SV572) and for the life of me couldn't tell the difference between them and 211s. I have to say though that comparisons were very limited as both breeds are rare.
Lately I've gone a bit agnostic and really don't think I've heard many valves, if any, that are any better than my 2A3. After our session with Steve's new one I think I'm even more convinced. As for the SV572s, they are extremely hard work and very expensive to get singing and considering I've discovered mosfets, jFets and now maybe latfets that do just as well, maybe better in some areas, then they've got to go.
as always YMMV
I have sv572-3 I think 2 pairs
sv572-10 maybe 1 pair left
sv811-3 3 pairs
sv811-3a 1 pair
most people in the states were aware of the distinction IIRC between the old 572b and the newer svetalana valves which I believe were invented in the mid 1990s and heavily promoted by Eric Barbour. I liked them(SV572) and for the life of me couldn't tell the difference between them and 211s. I have to say though that comparisons were very limited as both breeds are rare.
Lately I've gone a bit agnostic and really don't think I've heard many valves, if any, that are any better than my 2A3. After our session with Steve's new one I think I'm even more convinced. As for the SV572s, they are extremely hard work and very expensive to get singing and considering I've discovered mosfets, jFets and now maybe latfets that do just as well, maybe better in some areas, then they've got to go.
as always YMMV
There's nowhere you can be that isn't where you're meant to be
#20 Re: 5v power supplies
Paul has a pair of sv 811-10s which I have. Paul was good enough to lend them to me when I considered building Eric barbours 811-10 amp aeons ago. Heater supplies put me off it eventually
#21 Re: 5v power supplies
Now you have me thinking - I was given a small box of 120-0-120/15-0-15 transformers and I could use one of these regulators from one secondary to tune down to 5V perhaps for use with the el-cheapo DAC?pre65 wrote: ↑Sat Nov 11, 2017 12:28 pm Dave, these adjustable filament supply kits are a lot more "affordable" if you want a more DIY solution.
http://www.ebay.co.uk/itm/Tube-Amp-Fila ... 1438.l2649
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#22 Re: 5v power supplies
Sounds like a good idea.DSJR wrote: ↑Sun Nov 12, 2017 1:02 pmNow you have me thinking - I was given a small box of 120-0-120/15-0-15 transformers and I could use one of these regulators from one secondary to tune down to 5V perhaps for use with the el-cheapo DAC?pre65 wrote: ↑Sat Nov 11, 2017 12:28 pm Dave, these adjustable filament supply kits are a lot more "affordable" if you want a more DIY solution.
http://www.ebay.co.uk/itm/Tube-Amp-Fila ... 1438.l2649
The only thing necessary for the triumph of evil is for good men to do nothing.
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
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#23 Re: 5v power supplies
I ordered three (3) kits like Ed has, and they came today.
Two will get used on the 811a project and one to power a chip amp I have laying around.
Two will get used on the 811a project and one to power a chip amp I have laying around.
The only thing necessary for the triumph of evil is for good men to do nothing.
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)
Edmund Burke
G-Popz THE easy listening connoisseur. (Philip)