• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Specs And Curves

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fdegrove

fdegrove

diyAudio Senior Member
Joined 2002
Hi,

Frank; Ihave the plate curves for the Sovtek 2A3, wouldn't they be closer?
Click to expand...

Only if they correspond to the higher than normal rated version of the 2A3.

The reason why I mentioned the 300B is that rumour has is that they use the same elements to make both types.

Not sure if it's actually true though.

Can you compare the curves of the Sovtek 2A3 and the ones for a US made one?

Where did you find the ones for the Sovtek, BTW?

Cheers,;)

P.S. If you want to take advantage of the higher dissipation of the Sovtek 2A3, you're also stuck with the brand.
 
P

Peter Menting

Member
Joined 2003
Frank; Found the 2A3 curves in an article on the "New Sensor" site. It is a copy of a review by charles Hansen in the 5/00 issue of Glass Audio.

The project that I have in mind is a conversion of my Dyna 70 clone to a 6B4G pp config using IC coupling. At 4300 ohms, the Magnequest opt's in my unit are close to the 5K in the Ralph Power amp but I want to go IC coupled from input right through. I have tried to copy Stigla's schematic from an old post but can't get it to print, have also looked at the "amity" amp as well.

Think this could be a neat unit if I can get all the info together.

Pete
 
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