Comments on: Real McTube Calculations : Getting Started http://www.paleoelectronics.com/blog/2009/01/real-mctube-calculations-getting-started/ Clueless Idiots and High Voltage Vacuum Tubes Really Do Mix! Thu, 01 Jul 2010 22:19:08 +0000 hourly 1 http://wordpress.org/?v=3.0 By: Dilapidus http://www.paleoelectronics.com/blog/2009/01/real-mctube-calculations-getting-started/comment-page-1/#comment-94 Dilapidus Wed, 11 Mar 2009 01:21:42 +0000 http://www.paleoelectronics.com/blog/?p=108#comment-94 Slow.. but I need the ability to do direct tube driven in to my audio interface so this weekend I'm gonna try and get the McTube rolling. Slow.. but I need the ability to do direct tube driven in to my audio interface so this weekend I’m gonna try and get the McTube rolling.

]]> By: Glen http://www.paleoelectronics.com/blog/2009/01/real-mctube-calculations-getting-started/comment-page-1/#comment-93 Glen Tue, 10 Mar 2009 01:41:35 +0000 http://www.paleoelectronics.com/blog/?p=108#comment-93 How is the project coming along? I've built a preamp much the same, but used two 12au7 tubes at 38 volts DC. I will be starting the real Mctube preamp soon going to run it at about 100volts DC. Glen How is the project coming along?
I’ve built a preamp much the same, but used two 12au7 tubes at 38 volts DC. I will be starting the real Mctube preamp soon going to run it at about 100volts DC.

Glen

]]> By: Dilapidus http://www.paleoelectronics.com/blog/2009/01/real-mctube-calculations-getting-started/comment-page-1/#comment-97 Dilapidus Tue, 17 Feb 2009 16:57:11 +0000 http://www.paleoelectronics.com/blog/?p=108#comment-97 Oh yeah.. and I'm looking for a supplier for the little boxes for my "Amp Calculator". More soon.. Oh yeah.. and I’m looking for a supplier for the little boxes for my “Amp Calculator”.

More soon..

]]> By: Dilapidus http://www.paleoelectronics.com/blog/2009/01/real-mctube-calculations-getting-started/comment-page-1/#comment-96 Dilapidus Tue, 17 Feb 2009 16:52:30 +0000 http://www.paleoelectronics.com/blog/?p=108#comment-96 I've been recording so a bit slow to hit this blog. I did the first calcs. Drawings are done.. I did realize anyone was reading! I'll wrap that up soon. The only reason it was so low before was Fred's insistence on keeping the PT cheap. You should get good results. I’ve been recording so a bit slow to hit this blog.

I did the first calcs. Drawings are done.. I did realize anyone was reading! I’ll wrap that up soon.

The only reason it was so low before was Fred’s insistence on keeping the PT cheap. You should get good results.

]]> By: terminalef86 http://www.paleoelectronics.com/blog/2009/01/real-mctube-calculations-getting-started/comment-page-1/#comment-95 terminalef86 Tue, 17 Feb 2009 15:39:51 +0000 http://www.paleoelectronics.com/blog/?p=108#comment-95 any update? I looked for a cheap transformer for a while. It looks like you did better than me. I finally decided on the Triode PA522 which is a 120/240 pri. 330-0-330 / 12.6 sec. winding PT. I wired the primaries in series as if it were a 240 supply, but only give it 110 (USA)., so the end result is 165-0-165 / 6.3v. rectified and with a load of a single 12ax7, I think I'm around 140vdc at the plate... any update?

I looked for a cheap transformer for a while. It looks like you did better than me. I finally decided on the Triode PA522 which is a 120/240 pri. 330-0-330 / 12.6 sec. winding PT. I wired the primaries in series as if it were a 240 supply, but only give it 110 (USA)., so the end result is 165-0-165 / 6.3v. rectified and with a load of a single 12ax7, I think I’m around 140vdc at the plate…

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