New Tube Manufacture?

Trout · 07:13 PM

I just saw this on another forum and thought I would check in here to see if anyone has heard anything about these.

Data Sheet for the 12AX7KVA

They also make a new 6EU7.
I could not find an English version of the site, but most web site translators work ok.

voshod

Miniwatt · 13th February 2011, 12:42 PM

Voskhod, isn't that where Electro Harmonix tubes are made?

Trout · 13th February 2011, 12:56 PM

As far as I can tell EH/Sovtek/New Sensor or any of their 50 other assumed brands all come from St. Petersburg, Saratov, and Novosibirsk

Rod Coleman · 13th February 2011, 02:17 PM

Yes, Voskhod make the standard Russian 6Н2П-ЕВ and related designs, which are used as ECC83/12AX7 substitutes. I believe they have been sold as Sovtek, or other New Sensor brands in the past. The old Sovtek 12AX7WA looks just like a Voskhod 6Н2П inside.

The 12AX7EH is much different, and looks like a real 12AX7.

ashok · 13th February 2011, 03:32 PM

So would anyone know if the Sovtek 12AX7WA sounds different compared to the Electro Harmonix 12AX7EH ?

Rod Coleman · 13th February 2011, 03:36 PM

Very Different, in guitar amps, at least.

The -WA has a weaker sound. -EH sounds more like ECC83

Zibi · 14th February 2011, 05:05 PM

Google Translate

atmasphere · 14th February 2011, 06:19 PM

I read an article in Audio Express a couple of years ago about a new Mullard 12AX7 design that has much wider bandwidth due to vastly reduced Miller capacitances. Has anyone tried this tube yet?

SY · 14th February 2011, 06:23 PM

That was the claim. We'll never know- the venture went belly up before it really got started.

Wavebourn · 07:03 PM

It is Voskhod's version of 12AX7, made from 6N2P with dark color of anodes and re-wired filaments.

Chinese 12AX7-B are similar.

Voskhod is Калужский Радиоламповый Завод (Kaluga town Radio Tube Plant)

13th February 2011, 03:32 PM	#5
ashok diyAudio Member Join Date: Jun 2002 Location: 3RS	So would anyone know if the Sovtek 12AX7WA sounds different compared to the Electro Harmonix 12AX7EH ? __________________ AM

14th February 2011, 06:23 PM	#9
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	That was the claim. We'll never know- the venture went belly up before it really got started. __________________ “Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache

14th February 2011, 07:01 PM	#10
Wavebourn diyAudio Member Join Date: Sep 2006 Location: Pleasant Hill, CA	It is Voskhod's version of 12AX7, made from 6N2P with dark color of anodes and re-wired filaments. Chinese 12AX7-B are similar. Voskhod is Калужский Радиоламповый Завод (Kaluga town Radio Tube Plant) __________________ The devil is not so terrible as his mathematical model! Wavebourn: We Create Creativity! Last edited by Wavebourn; 14th February 2011 at 07:03 PM.

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13th February 2011, 12:42 PM	#2
Miniwatt diyAudio Member Join Date: Nov 2004 Location: Den Haag	Voskhod, isn't that where Electro Harmonix tubes are made?

13th February 2011, 12:56 PM	#3
Trout diyAudio Member Join Date: Nov 2004 Location: Midwest Madman	As far as I can tell EH/Sovtek/New Sensor or any of their 50 other assumed brands all come from St. Petersburg, Saratov, and Novosibirsk

13th February 2011, 02:17 PM	#4
Rod Coleman работник diyAudio Member Join Date: Jul 2004 Location: Warwickshire UK	Yes, Voskhod make the standard Russian 6Н2П-ЕВ and related designs, which are used as ECC83/12AX7 substitutes. I believe they have been sold as Sovtek, or other New Sensor brands in the past. The old Sovtek 12AX7WA looks just like a Voskhod 6Н2П inside. The 12AX7EH is much different, and looks like a real 12AX7.

13th February 2011, 03:36 PM	#6
Rod Coleman работник diyAudio Member Join Date: Jul 2004 Location: Warwickshire UK	Very Different, in guitar amps, at least. The -WA has a weaker sound. -EH sounds more like ECC83

14th February 2011, 06:19 PM	#8
atmasphere diyAudio Member Join Date: May 2007	I read an article in Audio Express a couple of years ago about a new Mullard 12AX7 design that has much wider bandwidth due to vastly reduced Miller capacitances. Has anyone tried this tube yet?

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