6G3 tremolo intensity?

Discussion in 'Shock Brother's DIY Amps' started by Uncle Daddy, Nov 25, 2021.

  1. Uncle Daddy

    Uncle Daddy Tele-Afflicted

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    My 6G3 build is great! The more I hang with it the more I like it. I would however, like to improve the trem, if possible, by softening the "swing" on the intensity. By 4 on the dial it's almost like an on/off switch; I'd like to have a little more control across the sweep. Any suggestions please?
    6g3.JPG

    Gratuitous pic!
    P1130561.JPG
     
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  2. cherryburst1

    cherryburst1 Tele-Meister

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    Change the oscillator coupling cap to a lower value. Start with .047 then to .022 if necessary.
     

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  3. 2L man

    2L man Tele-Holic

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    Replacing 250k potentiometer using 100k extends whole range to 0-10 perhaps even to 11 ;)
     
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  4. bebopbrain

    bebopbrain Tele-Meister

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    Replace the 250K linear pot with 250K audio taper.
    What used to be "4" will now be maybe "8".
    This safe change only affects knob position to sound mapping.

    The wiper goes to the power tubes.
    The "in" terminal, connected to the wiper when full clockwise (max intensity), goes to oscillator circuit.
    The other terminal goes to the power supply, of course.
     
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  5. Jimy

    Jimy TDPRI Member

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    Changing caps in the oscillator circuit will affect the speed of oscillation, not intensity.

    To change the intensity of the tremolo, alter the value of the 220k resistor that sits in series between the plate of V2B and the Intensity pot. Increasing the value of this resistor will lower tremolo intensity, reducing the value will increase intensity. For your purposes, I'd try 470k to start with and see how it sounds.
     

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  6. cherryburst1

    cherryburst1 Tele-Meister

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    How does changing the coupling cap affect speed? It is out of the oscillator feedback loop... I don't think he is talking about range. I thought he was referring to depth of tremolo. Reducing the .1 coupling cap should decrease the depth of low frequencies affected by the warble.
     
  7. Jimy

    Jimy TDPRI Member

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    Hey Cherryburst, I think I misunderstood your post. I see now that you said "oscillator coupling cap." For some reason, I thought you were referring to the .01uf caps in the oscillator circuit. Apologies. I should take the time to read more carefully.
     
  8. cherryburst1

    cherryburst1 Tele-Meister

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    No prob. I know these warbler circuits are touchy. I didn't know if there was an occasional strange interaction post network, I hadn't seen yet.
     
  9. Uncle Daddy

    Uncle Daddy Tele-Afflicted

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    Thanks everyone, some useful suggestions. I'll try the ocillator resistor and see how it goes from there.
     
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