New Build: Tweed...thing

Discussion in 'The Squawk Box' started by Splattle101, Jun 2, 2013.

  1. DADDEO

    DADDEO Senior Member

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    Didn't understand a word you said, but who cares when it sounds THAT GOOD.:applause:
     
  2. Jakeislove

    Jakeislove Senior Member

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    Rich sound!!
     
  3. Cygnus X1

    Cygnus X1 Senior Member

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    Once again excellent work on the amp, the recording, and the playing.
    You are not alone, I hear the complexity of what could be described as "sag" along with the varying compression,
    Something that (in my opinion) defines the complexity of the tweeds as a family.
     
  4. ARandall

    ARandall Senior Member

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    Thats a great sounding amp there.

    Whats the sound like in the room when you've got it cranked?? Deafening? Shouting level?

    What part of oz are you in....looks a bit north due to the 'not saturated' bit I seem to be experiencing in Melbourne ATM. I'd love to visit and hear the amp in person!!

    Would you care to share some info on your build?? One of my desires is to do a scratch build, and small and tweed seems a good place to start.
     
  5. Splattle101

    Splattle101 V.I.P. Member

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    Pretty friggin loud. It's as loud as my 5E3. I reckon those nice Magentic Components transformers make the difference there.

    Think west instead. :D

    Sure, ask away. Most of the interesting bits are above anyway, but I'm happy to give you dubious benefit of my thoughts on it.
     
  6. Splattle101

    Splattle101 V.I.P. Member

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    Edited with images uploaded to Imgur since Photobucket crapped out
     
  7. Bill Hicklin

    Bill Hicklin Senior Member

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    Leo didn't disagree; the 5F2A Princeton (5F1 with a tone knob) used a 10", as did the rare early-60s tweed Harvard (rebadged 5F2A).
     
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  8. Splattle101

    Splattle101 V.I.P. Member

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    I thought I'd add an update to this build thread. About a year ago I did a major modification to this amp. Major. Big. Huuuuuggge.

    I replaced the dinky 10 kOhm grild resistor on the second gain stage with a 1 MOhm resistor. It was a big deal.

    No, really, it was. Those who've suffered through the recording of this amp earlier in the thread will be familiar with the nasty sounds it produced when the vol. was maxed. Above about 9 (out of 12) on the dial, it produced a saggy, compressed, gated kind of distortion that had elements of a really bad old fuzz to it. I noted earlier that some of it sounded like rectifier sag, which it couldn't possibly be because this amp is single ended.

    Cut a long story short, it was blocking distortion and the big ass grid resistor fixed it. Completely. The amp now produces glorious overdrive all the way up to 12. Fan-phreekin'-tastic! Best 20c I ever spent.
     
  9. Soul Tramp

    Soul Tramp Speaker Snob MLP Vendor V.I.P. Member

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    Splat, what resistor is this? Is it a ground reference for the grid?
     
  10. Splattle101

    Splattle101 V.I.P. Member

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    It's a resistor between the 1 Meg volume pot and the grid of the second gain stage. It's not in the original, but I added it in. Originally I used a 10 k, thinking this would have the least impact on the sound, but might do the job. It didn't. So after some reading and thinking, I decided to replace it with a much bigger resistor. That worked.
     
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  11. Soul Tramp

    Soul Tramp Speaker Snob MLP Vendor V.I.P. Member

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    Ah, I get it. Would be interesting to see it on a scope.
     
  12. Pappy58

    Pappy58 Senior Member

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    Great thread! Thanks for posting these details. I am preparing to do a 5E3 build and going to incorporate a few of your tricks! :applause::cheers:
     
  13. Leña_Costoso

    Leña_Costoso Senior Member

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    LOVE IT!

    [​IMG]

    Here's the one I made with a 12" speaker, and yes... Tilt Back Legs! There's something about an amp with one knob - VOLUME, and nothing else. I'd love to build up a 2xEL84 amp of similar size, with just "VOLUME" and nothing more.
     
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  14. Splattle101

    Splattle101 V.I.P. Member

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    Nice amp! I ended up fitting tilt back legs to mine as well.
     
  15. Leña_Costoso

    Leña_Costoso Senior Member

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    Kudo's to your build up...! Legs do help "get the loud out"!
     

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