Jcm800 2204 Build

Discussion in 'Building the Classics' started by coolidge56, Mar 22, 2019.

  1. coolidge56

    coolidge56 Well-Known Member Double Platinum Supporting Member

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  2. ampmadscientist

    ampmadscientist Well-Known Member

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    Build one and let's hear it.
     
  3. Exojam

    Exojam Well-Known Member

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    You have all the information you need so why don’t you build one and fire it and give us your thoughts?
     
  4. coolidge56

    coolidge56 Well-Known Member Double Platinum Supporting Member

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    We are waiting for you to post pictures of your own build and show Marshall, Metropoulos, and everyone else how they all built theirs wrong.
     
  5. South Park

    South Park Well-Known Member

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    The old school lay out for tube amps works great. It was designed to work with tubes. Tubes have there own set of rules is all you need to know
     
  6. coolidge56

    coolidge56 Well-Known Member Double Platinum Supporting Member

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    Someone received his boards today. Took Fedex long enough geesh!
     
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  7. Exojam

    Exojam Well-Known Member

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    Thank you Sir.
     
  8. Fender

    Fender Active Member

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    any news ? pics are sadly gone :/
     
  9. coolidge56

    coolidge56 Well-Known Member Double Platinum Supporting Member

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  10. Exojam

    Exojam Well-Known Member

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    You will love those XF2’s, well worth the money in my opinion.

    If I may ask, how did you test them to find they were so close in specs?
     
  11. coolidge56

    coolidge56 Well-Known Member Double Platinum Supporting Member

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    I picked up a Bias Master recently so I'm able to see the current draw from both in real time. They biased within 1.2mA of each other pretty crazy.
     
  12. Exojam

    Exojam Well-Known Member

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    You could pull that off with your meter, why the need for that device?

    That device does not seem to me to be able to actually test the tubes in any meaningful way.

    Have you by chance looked at the Orange tube tester?
     
  13. coolidge56

    coolidge56 Well-Known Member Double Platinum Supporting Member

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    True, until I purchased the JCM900 with it's additional post bias bits of failover, LED's, and junk. There are quite a few threads on how annoying it is trying to bias them so I threw down on the Bias Master. Now all bias jobs are easy peasy.

    Also these tubes were from Doug's Tubes and KCA two very trusted sources.

    You missed my epic 2020 vintage tube buying meltdown...after purchasing the first two double O getter Mullards I promptly dropped one and broke it like seconds after unpacking it. :realmad:I got pretty hot under the collar and threw $1,000 down to buy 6 more. lol
     
    Last edited: Aug 25, 2020
  14. Exojam

    Exojam Well-Known Member

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    I dropped one myself. That **** sucked.
     
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