6AS7 Svetlana schematics?

[p_ete2003]

Hi all!

I would like to use these Svetlana's tubes to my next SE amp project.
Do you have any other schematics than this one from the manufacturer's pages: http://www.svetlana.com/docs/tubeframe.html

I need to have 2-8W and I have the preamp already to drive this.

I started this thread because I'm going to use this amp with my "coming soon" 100dB horn speakers..

Thanks for your replies!!!

yours: Pete

 

[fdegrove]

Hi,

There are nice alternative ckts, I'll find you some....

SET using 6AS7G/6080s, right?

Cheers,😉

 

[p_ete2003]

fdegrove,

SET 6as7g/6080 is the plan.

Thank you in advance!
-Pete

 

[Colt45]

You'll need a pretty low impedance primary on your OPT, and quite a bit of drive voltage (because the gain of 6AS7 is ~2.)

Oh yeah - you are in Finland - so very close to RU. Before Russian tubes were exported under north american names 6AS7/6080, these lamps were made in SSSR under names 6N5S, and 6N13S. (Just in case you come across some. there should be planty of stock around)

another alternative is 6S19P - 9 pin finger tube, equal to half of 6AS7. or 6S41S - equal to both halves of 6AS7 tied together.. more or less.

 

[Heiko]

My 6AS7 Amp

Hi Pete!

6AS7 Single Ended Amps are very rare. I builded mine this year without having schematics from the internet. The things you find there do not work very fine! Have a look at my Amp:

http://www.jogis-roehrenbude.de/Leserbriefe/Heiko-6AS7/Heiko-6AS7.htm

Heiko

 

[p_ete2003]

Hi Colt45 and Heiko,

Thanks for your replies!

Do you know if appr. 33V to 100k load will be good enough to drive this set?

FYI:
I have ordered Fostex FE 206E -elements. Will be backloaded single driver horns with efficiency 100dB, 1W. So I don't really need more than a couple of watts..

here are the specs for the Fostex:
http://www.fostex.co.jp/int/pages/products/spunits/unitpdf/fe206erev.pdf


P.S. Heiko, I've seen your pages earlier.. You are right, there is not much of these tubes on the net. It is a really great looking set! Cheers!

 

[fdegrove]

Hi,

Here are some links to the Liliput kit:

AUDIOKIT

The site uses frames so you may have to do some searching.

LILIPUT

I heard this amp on a pair of Lowther speaker and thought it was very good.

The OPT shows very wide BW with the 6080.

Cheers,😉

 

[p_ete2003]

Thank you Frank!

Liliput would be the one for me. Do you have anything in English concerning this Liliput? I don't understand Italian and the pages were poorly translated with a translator program.

You're right on the wide bandwith with this tube.

Cheers!
-Pete