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   sci.electronics.basics      Elementary questions about electronics      72,318 messages   

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   Message 70,589 of 72,318   
   Les Cargill to jurb6006@gmail.com   
   Re: A balanced 12AX7 based buffer   
   12 May 18 12:48:28   
   
   From: lcargill99@comcast.com   
      
   jurb6006@gmail.com wrote:   
   > You can use a lower voltage if that's the idea. in fact you'll   
   > probably have to if you want low enough value plate resistors to   
   > directly drive the mixer or whatever. Making balanced is no sweat,   
   > feed the grid of one side, bypass the other and tie the cathodes   
   > together.   
   >   
   > I don't usually send people other places but Audio Asylum has a   
   > "tubes DIY" section for people who build their own amps and other   
   > tube equipment. Some of them guys are pretty sharp and can probably   
   > give you good answers. They are also familiar with balanced lines but   
   > it might not be the same impedance, so tell them the impedance.   
   >   
      
   That's a good lead - thanks for that.   
      
   > The site charges nothing, installs nothing but a cookie, and the only   
   > password requirement is 6 characters. Quite easy to deal with. And it   
   > has image hosting for attachments to posts so if you don't, you can   
   > post an electronics question there and if you wanted to display the   
   > picture somewhere for people here for example, you can just stick the   
   > URL in your post. That will reveal your nick there but so what,   
   > people can get your real email here.   
   >   
   > It does sound doable though, but the ECC83 might not be the best tube   
   > for it. They might recommend a 6SN7 or whatever.   
      
   Interesting. I just figured those were easy to find.   
      
   > If you don't use an   
   > output transformer I think the tube will be feeding a lower impedance   
   > than it likes, but I think it will do it.   
   >   
      
   I appreciate it.   
      
   --   
   Les Cargill   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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