My Holy Grail Guitar Amp

Discussion in 'The Okie Corral' started by Green Dragoon, Sep 18, 2020.

  1. Green Dragoon

    Green Dragoon

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    That’s a JCM 800 in the other pic I posted.

    There’s a Dumble for sale now on Reverb. $22k!!!
     
  2. BIGJC

    BIGJC

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    Nice! I'd like to plug my tele into that!
     
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  3. Oldschooltube

    Oldschooltube Flux Capacitor Technician

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    49B8463D-6238-4F93-897B-498AF8D3DF4F.jpeg 3876013B-F6A2-40F7-A96B-E836D666D5E3.jpeg B9DD4A6D-CF1A-454D-825D-9DF56A9058EC.jpeg

    Here is a little 18 watt el84 amp I designed and built using spare parts. I built it for my wife’s grandpa who was a cattle rancher all his life.

    I used old barn wood and burned all the family cattle brands into it for a rustic look.

    The twin 8” Muzak speakers came out of an office building that was being demolished and they actually sound quite good. At reasonable volume it has a super clean sound but when you crank it you get some nice cone breakup and wide open the tubes start to breakup for a really raunchy distortion sound.
     
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  4. M7425

    M7425

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    Man, the stories you could tell. Feel free to share a few of the spirit moves you...

    I just picked up a LP classic in Cherry Sunburst. Was my grail guitar since college. I need to get a smaller amp than the Fender I have as not to annoy the Misses and kiddos too much. Thoughts on this?
     
    Last edited: Sep 18, 2020
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  5. Green Dragoon

    Green Dragoon

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    That is really awesome.
     
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  6. Green Dragoon

    Green Dragoon

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    In those pics, you can see a red and a purple Hotplate. Those are attenuators that let me crank the amps but then lower th voltage to make them quiet. Perhaps that would work for you.
     
  7. BobbyS

    BobbyS Truth always sounds like lies to a sinner

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    that is too cool GD

    :notworthy:

    you got stuff
     
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  8. Slackinoff

    Slackinoff Bathed in lavender and gasoline

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    Cool! The only tubes in my house are in an old Heathkit 20m ham transceiver. I was going to take a picture of them glowing, but I ran out of time on my lunch break.
     
    Last edited: Sep 18, 2020
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  9. Green Dragoon

    Green Dragoon

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    thanks Bobby.:cheers:
     
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  10. Green Dragoon

    Green Dragoon

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    where's the rectifier? 7189A tubes are great. You don't see them a lot. Is that a single-ended "Class A" design?
     
  11. Inyo Tim

    Inyo Tim Senior Moment

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    I have quite a collection of old tube amps. No tweeds from the 50's though. I have one of the first silver faced Twins that was very easy to blackface. I think my best sounding amp is a Genz Benz Black Pearl running four EL-84's class A.
     
  12. Oldschooltube

    Oldschooltube Flux Capacitor Technician

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    I used SS rectification. It’s push pull.
     
  13. Oldschooltube

    Oldschooltube Flux Capacitor Technician

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    FAF87CAD-E633-4F43-B264-50B76BE0F2FF.jpeg
    I guess that tube glow is ok.

    THIS is tube glow!

    811A transmitting tubes in one of my Altec 1570b amplifiers.

    I’ve always wanted to add a 12ax7 to the gain stage and turn one into a guitar amp. 165 watts of window rattling, neighbor irritating tube power! I just can’t do it though. You just don’t see many 1570s around anymore.
     
  14. Dr. Bill

    Dr. Bill

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    Since you haven't used that amp for 7 years, better ship it to me and I'll work the bugs out. I'll have it back in... I don't know... 7 years? :cowboy:

    Truth be told, I play mostly acoustic. But I just got an electric - haven't had one since 1992.
     
  15. BobbyS

    BobbyS Truth always sounds like lies to a sinner

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    I have one tube amp that I built. Built to Fender specs a Brown Princeton (Brownie)
     
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  16. Slackinoff

    Slackinoff Bathed in lavender and gasoline

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    That is the coolest hand made thing on GT I have seen in...forever?
     
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  17. Oldschooltube

    Oldschooltube Flux Capacitor Technician

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    Well thank you.
     
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  18. Green Dragoon

    Green Dragoon

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    I designed the Black Pearl. Seriously. That’s the one John Hiatt and Brent Mason played.

    It isn’t a true Class A. It is cathode biased. It will run in class A at lower volumes but switches to push-pull as you crank it. The same as a VOX AC30.
     
    Last edited: Sep 18, 2020
  19. Dr. Bill

    Dr. Bill

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    You'll have to fill us in on the details sometime. And not just these two guys...
     
  20. Green Dragoon

    Green Dragoon

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    I will when I’m on my computer and not on my phone. Too many typos when on the phone.

    I’ll post a link to a YouTube video of me doing a product demo on it too.