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[chlpark]

http://www.oktava-shop.com/view_prod.php?id=158

I sent an e-mail to Natalia Kuzmenko (from www.oktava-online.com) asking for info about this mic and the response was:

'The microphone uses the scheme of famous LOMO 19A4 with some modern modifications. Tube is a Russian military 6?6?-? [She must have written in cyrillic and my computer couldn't decode those missing letters   ]'

Lou Ximenez

[YZ]

chlpark wrote on Sun, 14 December 2008 10:00

http://www.oktava-shop.com/view_prod.php?id=158 I sent an e-mail to Natalia Kuzmenko (from www.oktava-online.com) asking for info about this mic and the response was: 'The microphone uses the scheme of famous LOMO 19A4 with some modern modifications. Tube is a Russian military 6?6?-? [She must have written in cyrillic and my computer couldn't decode those missing letters   ]' Lou Ximenez

Russian 6N6B-E? dual triode, 10mm dia. subminiature, extended life.

maybe.

if there is such a tube.

YMMV.

[seedyunderbelly.com]

chlpark wrote on Sun, 14 December 2008 06:00

http://www.oktava-shop.com/view_prod.php?id=158 I sent an e-mail to Natalia Kuzmenko (from www.oktava-online.com) asking for info about this mic and the response was: 'The microphone uses the scheme of famous LOMO 19A4 with some modern modifications. Tube is a Russian military 6?6?-? [She must have written in cyrillic and my computer couldn't decode those missing letters   ]' Lou Ximenez

Lou  Sometimes  you can change the text encoding and it appears.  -j

[chlpark]

No such luck  

[Rod Affleck]

YZ wrote on Mon, 15 December 2008 14:44

chlpark wrote on Sun, 14 December 2008 10:00 http://www.oktava-shop.com/view_prod.php?id=158 Russian 6N6B-E? dual triode, 10mm dia. subminiature, extended life. maybe. if there is such a tube. YMMV.

It may also be a pentode set up with a cathode follower like the Sony C37a. In photo three in the link above the output transformer appears to be in the power supply (which makes sense considering how small a mk-012 body is) which would lend credence to my theory. So possibly a 6Zh6B-something?

I'd be interested in hearing how they sound, but for almost a grand per body/power supply I doubt I'll be taking the plunge myself any time soon.

[chlpark]

It may well be the 6S6B, which is used in the Lomo 19A18.

Lou X.

[YZ]

chlpark wrote on Tue, 16 December 2008 15:45

It may well be the 6S6B, which is used in the Lomo 19A18. Lou X.

The 6S6B is a single triode; would work in a mic.

[YZ]

evil robot wrote on Tue, 16 December 2008 11:46

It may also be a pentode set up with a cathode follower like the Sony C37a. In photo three in the link above the output transformer appears to be in the power supply (which makes sense considering how small a mk-012 body is) which would lend credence to my theory. So possibly a 6Zh6B-something? I'd be interested in hearing how they sound, but for almost a grand per body/power supply I doubt I'll be taking the plunge myself any time soon.

The code you've wrote above would translate to 6J6B, a sharp-cutoff RF pentode.

[Rod Affleck]

YZ wrote on Wed, 17 December 2008 04:23

The code you've wrote above would translate to 6J6B, a sharp-cutoff RF pentode.

Yes, it would indeed be a SCP; just like the 6au6 found in the above-mentioned C37a, or the 6J1Bs found in several Chinese tube condensers these days.