Tubes Asylum

• Re: Tung-Sol 6550 Authenticity Help Needed - TH 22:13:30 09/21/04 (0)
  In Reply to: Tung-Sol 6550 Authenticity Help Needed posted by rontokyo on September 21, 2004 at 16:02:41:

  The shape of the bottle is wrong. Too slender where the real thing is more round.

  After you've looked at a number of the real vs. copies it is very (painfully?) obvious.

  
  
  
  

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• Re: Tung-Sol 6550 Authenticity Help Needed - rontokyo 17:58:59 09/21/04 (1)
  In Reply to: Tung-Sol 6550 Authenticity Help Needed posted by rontokyo on September 21, 2004 at 16:02:41:

  Seeing as how you sleuths know your business, how about *these* 6550s as supposedly manufactured by Amperex in the UK? It's my understanding that Amperex didin't manufacture 6550 tubes in the UK. Here's the link to a current auction:
  

  • http://page9.auctions.yahoo.co.jp/jp/auction/k6769919   (Open in New Window)

  
  

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  • Re: Tung-Sol 6550 Authenticity Help Needed - agattu 18:48:11 09/21/04 (0)
    In Reply to: Re: Tung-Sol 6550 Authenticity Help Needed posted by rontokyo on September 21, 2004 at 17:58:59:

    Those are chinese like the others. No 6550 was ever manufactured in England--let alone by Amperex. Plates are black with holes yet Tungsols with holes have only grey plates. etc, etc, etc,
    
    

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• Re: Tung-Sol 6550 Authenticity Help Needed - tvr2500m 16:59:53 09/21/04 (5)
  In Reply to: Tung-Sol 6550 Authenticity Help Needed posted by rontokyo on September 21, 2004 at 16:02:41:

  These aren't Tung Sols. They're Chinese-made 6500s. I've watched quite a few of these Chinese-made Tung Sol look alikes go on eBay for some big money - at least big money for Chinese-made Tung Sol look alikes. Then Chinese 6550s aren't necessarily a bad tube but you wouldn't want to pay NOS US-made 6550 money for them.

  - SJ
  
  

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  • Re: Tung-Sol 6550 Authenticity Help Needed - rontokyo 17:16:15 09/21/04 (4)
    In Reply to: Re: Tung-Sol 6550 Authenticity Help Needed posted by tvr2500m on September 21, 2004 at 16:59:53:

    Thanks for your thoughts. Just out of curiousity, what tipped you off to the rebranding?
    
    

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    • A few more... - agattu 18:39:10 09/21/04 (0)
      In Reply to: Re: Tung-Sol 6550 Authenticity Help Needed posted by rontokyo on September 21, 2004 at 17:16:15:

      1. The collar or band is gold but should be chrome.
      2. The plastic base is black but should be brown.
      3. The plates are black with 3-holes per plate. Tungsol did not make a blackplate with holes. Tungsols with holes have only grey plates.
      
      

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    • Re: Tung-Sol 6550 Authenticity Help Needed - tvr2500m 17:48:06 09/21/04 (0)
      In Reply to: Re: Tung-Sol 6550 Authenticity Help Needed posted by rontokyo on September 21, 2004 at 17:16:15:

      Yes, mrfixit hit two of the things that also tipped me off. Those thick washer getters are different from the light gauge wire getters of any any Tung Sol 6550. Also, the bottle and plate shapes are different from a Tung Sol, as is the arrangement of filaments and shields above the upper mica.

      - SJ
      
      

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    • Re: Tung-Sol 6550 Authenticity Help Needed - mrfixit 17:40:43 09/21/04 (1)
      In Reply to: Re: Tung-Sol 6550 Authenticity Help Needed posted by rontokyo on September 21, 2004 at 17:16:15:

      Two things stand out to me - the shape of the mica wings at the top of the tube and the "washer" type getter...

      
      
      
      

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      • Re: Tung-Sol 6550 Authenticity Help Needed - rontokyo 17:53:00 09/21/04 (0)
        In Reply to: Re: Tung-Sol 6550 Authenticity Help Needed posted by mrfixit on September 21, 2004 at 17:40:43:

        Got it! Thanks to you both.
        
        

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