Put some Russian: 6П3С-Е valves in my BLuesmaster today

[norburybrook]

As the title says,


I Put some Russian: 6П3С-Е valves in my bluesmaster today. I had a day off and played the amp for an hour this morning to reacquaint myself. I then waited for a cool down and installed the Russian: 6П3С-Е.

IMG_20181210_161208.jpg

Checked the voltages/Bias and let it settle in for a while then played it for an hour afterwards.


result:


I couldn't tell any difference I'm afraid from the Tube town 6L6's . I wish I could but being honest I coudn't. All I'll say is they're cheap if you get them direct friom Russia or Ukraine like I did. They're a short bottle 6L6 military spec so I think they will last longer than the tube town valves.

So really it's a result, long lasting military spec valves that cost 50% less than the current crop of 6L6's


over and out....comrades.


M

[Synchu]

I’m using them all the time since were 2 a dime. Now they run a bit more expensive. They sound excellent and are very durable.
Just have to take into account that these should be biased as 5881.

Niki

P.S. Kudos for the Cyrillic P

[norburybrook]

I’m using them all the time since were 2 a dime. Now they run a bit more expensive. They sound excellent and are very durable.
Just have to take into account that these should be biased as 5881.

Niki

P.S. Kudos for the Cyrillic P

thanks Nikki,

I left the bias at 60% of 30w, having had a quick google, to keep the same 60% I would need to drop it a bit as they're 23W valve. Or....just leave them biased a bit hotter.

@34mv with 480vDC that's about 70% bias I've calculated.


the Cyrillic P was a cut and paste glad you liked it.

M

[Synchu]

They are pretty durable devices.

I kept them at 500V and @85% for quite a long time, exaclty the -EV designation ones which are the military once that are holding nicely.

Niki

[alkuz1961]

it's the same tube

[hywelg]

I’m using them all the time since were 2 a dime. Now they run a bit more expensive. They sound excellent and are very durable.
Just have to take into account that these should be biased as 5881.

Niki

P.S. Kudos for the Cyrillic P

thanks Nikki,

I left the bias at 60% of 30w, having had a quick google, to keep the same 60% I would need to drop it a bit as they're 23W valve. Or....just leave them biased a bit hotter.

@34mv with 480vDC that's about 70% bias I've calculated.


the Cyrillic P was a cut and paste glad you liked it.

M

And the C Cyrillic is actually an S in western alphabet. So 6Π3C is actually 6P3S. I bought some nice black glass ex USSR Mil, 6Π6C (6P6S) 6v6 equivalents when they were about £10 a matched pair. They withstand the voltage very well, (434v on my OTS IIRC) . Just a bit darker than 6L6's and break up earlier obviously. But nice for a change. In fact now its prompted me I might just bang them back in for a while. I set the output to 8R for a 16R cab.

[bepone]

6P3S when i was buying them was 2 usd..more than 10 years ago i never consider this like a good candidate, looks very poor and cheap tube

6P3S-E was 4 usd... i was never using them over 400V, but now i see that people useing them up to 500V (i will never do that because for me this is a waay too much for g2, datasheet is saying 250V)
so military tube, 23W max IMHO.. it is not good to consider it like a 30W tube because anode is smaller compared to 6L6GC tubes

after New Sensor took factory, all tubes were branded like Sovtek 5881 WGC, WXT etc etc...

[norburybrook]

Well, they sound good, quiet and reliable so far. Been loving them in my tweedle Dee for the last 6 months.

The difference in biasing is 60% for 6L6 or 70% for the Russian valve. Still got headroom. I could always drop back to 60% of I wanted.

They're cheap so if they last 6 months then it's still fine.


M

Sent from my Nexus 6 using Tapatalk

[tubeswell]

I've been using them for years in all my amps. I get mine from Siberian Tubes in Russia - by the carton