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   rec.audio.tubes      Tube-based amplifiers... that go to 11      52,877 messages   

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   Message 52,384 of 52,877   
   Peter Wieck to Frank Lucas   
   Re: Second DIY (sort of) Amp   
   04 Nov 14 04:41:54   
   
   From: pfjw@aol.com   
      
   On Tuesday, November 4, 2014 12:59:06 AM UTC-5, Frank Lucas wrote:   
   > I have made a ST35 clone (perfect copy) out of the trafos bought on ebay    
   > long ago, no pcb but a solid 3mm copper plate put on a diy raw wooden    
   > box. I love the sound of this and all the other 35 I have listened in my    
   > life but I find Leaks Stereo20 slightly better with the right preamp.   
   > Now I have a SCA35 that I could restore or take the irons out and build    
   > another 35 clone. Eager to see what are your impressions on the board    
   > you decided to use and to see pictures of the finished job.   
   >    
   > Frank   
   > Florence, Italy   
      
   That will likely be this coming weekend. Linked is the drop-box of pictures   
   to-date - I had not planned to share the progress photos before completion,   
   but here it is. Note that wire-management is crude at this point, the final   
   configuration will be be    
   determined how stable the unit is when actually carrying signal. I *know* that   
   running line AC next to signal wires is generally not the best of ideas, but I   
   am using the ties to keep things out of the way. Nor have I 'shrunk' the   
   tubing around the    
   splices yet - that also will be done after testing and final layout.    
      
   I have five or six sketches on how I will finish it - in a house with two   
   active cats, two very active dogs, and as often as not up to four small   
   grandchildren, an open look is not going to happen. So it will be caged. As I   
   am recycling Dynaco stuff, I    
   have several options. Simplicity will be the goal in any case.   
      
   Now, as to restoring the SCA35 or cloning another - bluntly, I would restore   
   it rather than clone it, the exception being if it is well-and-truly not   
   salvageable. There is a nifty power-supply board available that pretty much   
   takes care of that issue in    
   a simple and elegant way - including adding time-delay, and restoring the   
   boards is very, very easy.    
      
   Peter Wieck   
   Melrose Park, PA    
      
   https://www.dropbox.com/sh/464rqwpo6ddh2et/AADynzDDsYUaySK-tIv8RDRia?dl=0   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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