Radio Road

Posted by Gary7m on December 19, 2008 at 11:52:25

Greets!

Been gone a long long time...

Before a crash killed all my files, I had a bookmark for a guy that was doing complete rebuilds on Dyna FM3s. It was not any of your usual suspects [AVA, Curcio, Valley]. The website was fairly thorough, nice layout and pix. He was selling parts, mods, and complete units. Any links I can check out?

TIA

• RE: Dynaco FM 3 Rebuilders - paddeo 11:39:33 12/20/08 (5)
  In Reply to: RE: Dynaco FM 3 Rebuilders posted by Gary7m on December 19, 2008 at 11:52:25

  
  Maybe this is the site you are looking for?
  
  http://home.comcast.net/~netminer/FM3ZONE.html
  
  Regards
  
  

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  • RE: Dynaco FM 3 Rebuilders - Brian Levy 14:04:00 12/20/08 (3)
    In Reply to: RE: Dynaco FM 3 Rebuilders posted by paddeo on December 20, 2008 at 11:39:33

    Thanks for the link. I've got a PAS3X pulled apart that I've been thinking what to do with. Also have my FM-3 that does okay but would like to update without going radical.
    
    

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    • RE: PAS 3 X - 1973shovel 16:44:54 12/20/08 (2)
      In Reply to: RE: Dynaco FM 3 Rebuilders posted by Brian Levy on December 20, 2008 at 14:04:00

      I can't speak for the FM-3 mods he sells, but you can do far better with the PAS than what he's offering.
      
      The capacitance for the fillament supply should be increased far beyond what those small caps can offer. I replaced the selenium rectifier with diodes and increased the capacitance by about seven times the stock amount. It took the sound of the (otherwise) stock PAS beyond my Audio Research SP-3-A-1.
      
      I'd look elsewhere for PAS upgrades. Email me if you have any questions (and no, I'm not selling anything).
      
      

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      • RE: PAS 3 X - Brian Levy 15:52:58 12/21/08 (1)
        In Reply to: RE: PAS 3 X posted by 1973shovel on December 20, 2008 at 16:44:54

        With that much added capacitance did you have to change the transformer? I have a file of PAS mods offered for the PAS and one day will sit down and decide what I want to do. I'm actually leaning to the AVA SuperPAS. I had one of his "factory" built units for some years and then sold it. It was a very very good sounding unit and seemed not to have any impact on any amp it mated to. 1st preamp I can honestly say that about. As soon as it was out of the house, I knew I was going to regret the decision and I have ever since.
        
        

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        • RE: "did you have to change the transformer?" - 1973shovel 11:25:47 12/22/08 (0)
          In Reply to: RE: PAS 3 X posted by Brian Levy on December 21, 2008 at 15:52:58

          I did not. As a matter of fact, I recently posted on the Tube/DIY Asylum, saying I've had up to 1/4 farad (250,000 uF) on the filament supply of stock PAS transformer with never a problem. And I built it around 15 years ago.
          
          I did the Vorhis mod (Last PAS, Audio Amateur), and I've been very happy with it. It's fared well in comparison to some other quality preamps I've put it up against. Have you got that mod in your folder? If so, take a close look at it!
          
          Good luck.
          
          

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  • Yeah, that's the one! - 1973shovel 13:44:05 12/20/08 (0)
    In Reply to: RE: Dynaco FM 3 Rebuilders posted by paddeo on December 20, 2008 at 11:39:33

    The old page is defunct, with no forwarding to the new page.
    
    Thanks!
    

    • FM-3 Zone   (Open in New Window)

    
    

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• Well, this WAS a site - 1973shovel 14:42:35 12/19/08 (2)
  In Reply to: RE: Dynaco FM 3 Rebuilders posted by Gary7m on December 19, 2008 at 11:52:25

  I'm not sure what happened to it. Some nice upgrades, and what I thought was a very clean black faceplate for the FM-3.
  
  The link seems to be bad. The only reason I posted it is I'm hoping the site is only temporarly down. If anyone knows more, please post.
  

  • FM 3 Zone   (Open in New Window)

  
  

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  • RE: Well, this WAS a site - Gary7m 21:35:25 12/19/08 (1)
    In Reply to: RE: Well, this WAS a site posted by 1973shovel on December 19, 2008 at 14:42:35

    I did a Google and found this link:http://home.comcast.net/~netminer/FM3ZONE.html
    
    and email address: fmthreesforus@yahoo.com
    
    Got this reply from C. Epperson
    
    Hi Gary, I still do some limited upgrades. If you buy the complete upgrade kit for the FM-3, I'll install it for a flat rate of $100. You pay the shipping both ways. I hope that answered the question...C
    
    
    
    

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    • Thanks for the update - 1973shovel 09:16:55 12/20/08 (0)
      In Reply to: RE: Well, this WAS a site posted by Gary7m on December 19, 2008 at 21:35:25

      I suspect that was the site which offered the black faceplate for the FM-3, but I'm not 100% sure.
      
      Here's another link to some good information regarding the FM-3, which was just posted in Vintage.
      
      Glass Audio had an article about the tuner as well, including David Berning deemphisis network correction. I'm not sure which issue it was though.
      
      Thanks again for the update on that site.
      

      • AVA FM-3   (Open in New Window)

      
      

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