Tubes Asylum

• Re: Tubes for Earmax Pär 07:01:11 09/21/00 (5)
  In Reply to: Tubes for Earmax posted by Christopher Chong on September 21, 2000 at 06:53:19:

  Hi,
  From a review:
  "It uses three dual-triode tubes-one 12AT7 input tube, and two 6GM8 output tubes" which is one ECC81 - as said - and two ECC86 (for output).
  /Pär
  
  

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  • Re: Tubes for Earmax sagit 13:22:25 09/21/00 (4)
    In Reply to: Re: Tubes for Earmax posted by Pär on September 21, 2000 at 07:01:11:

    ... but the older models use ECC88/6DJ8.
    That change from ECC88 to 6GM8 was done a couple of years ago.
    Jorge
    
    

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    • Re: Tubes for Earmax Don 13:28:44 09/21/00 (3)
      In Reply to: Re: Tubes for Earmax posted by sagit on September 21, 2000 at 13:22:25:

      I have a (presumably) older model marked simply Brocksieper that I bought used. It had 6GM8s in it? COuld it have been made for 6Dj8s? How can I tell? What would happen if I put 6DJ8s in it?
      
      

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      • Re: Tubes for Earmax sagit 14:39:26 09/21/00 (2)
        In Reply to: Re: Tubes for Earmax posted by Don on September 21, 2000 at 13:28:44:

        Well it seems that there are 2 models.
        Please check the link of the European supplier:
        http://www.audiophileclub.co.uk/earmax.html

        The Pro model uses 1x ECC81 and 2x ECC88, and seems to be still in production.

        The US link is:
        http://www.audioadvancements.com/
        but it has much less info.

        The ECC88 and ECC86 are different tubes with different pinouts.

        Jorge
        
        
        

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        • Re: Tubes for Earmax sagit 15:10:43 09/21/00 (1)
          In Reply to: Re: Tubes for Earmax posted by sagit on September 21, 2000 at 14:39:26:

          Sorry, 6DJ8 and 6GM8 have the same pinout. However different electrical parameters.
          Jorge
          
          
          

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          • Re: Tubes for Earmax Pär 23:27:34 09/21/00 (0)
            In Reply to: Re: Tubes for Earmax posted by sagit on September 21, 2000 at 15:10:43:

            Hi,
            One way to check it out could be to look at the tube voltage. A ECC88 takes slightly more than 90V while a ECC86 likes about 30V. Meassure between pin 6 and 8 or 1 and 3.
            Is the bottom lid opened? There may be some marking inside...
            /Pär
            
            

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