5c1 clone, too much bass,

Discussion in 'Shock Brother's DIY Amps' started by GARAGE HERMIT, Aug 7, 2019.

  1. GARAGE HERMIT

    GARAGE HERMIT Tele-Meister

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    i built a 5c1 clone but it has too much bass, wondering how i could reduce it, thank's,
    c3.jpg c2.jpg ci.jpg
     
  2. corliss1

    corliss1 Friend of Leo's Platinum Supporter

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    Try changing the .02 coupling cap to something like .01 to see if that's enough of a change? That's where I'd start.
     
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  3. Wally

    Wally Telefied Ad Free Member

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    There is not much to change there, is there? What speaker are you using? I will also observe that ime that is a very dangerous PT.
     
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  4. tubelectron

    tubelectron Tele-Meister

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    First of all : congratulations ! Morover, you did a nice cab... :cool::cool::cool:

    Is your circuit conform to this schematic below ?

    [​IMG]

    Yes, the cap between 6SJ7 and 6V6. Even not 0.01, but as low as 0.0022 or 0.001.

    Yes. This kind of very simple (but good !) circuit sounds quite often boomy and dark (like many small lap steel guitars of the 40s). Using a JENSEN P10R or P10Q with its thin bass and bright top end would help, maybe...

    Another solution is to increase the slope of the RC coupling between the 2 stages, and also increase the frequency. It's what I did on my small VOX AC3 Top Boost below - look at the coupling before the EL84 : you see the principle.

    [​IMG]

    I had too much bass excursion and mud in the speaker, and this 12dB/Oct. filter cut the excess while leaving enough bass range. On your circuit, you'll have to tweak the values until your find a satisfactory compromise for you. ;)

    [​IMG]
    [​IMG]
    [​IMG]

    But it's me, OK ? :D

    -tbln
     
    Last edited: Aug 7, 2019
  5. tubeswell

    tubeswell Friend of Leo's

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    Make the coupling cap .01uF/10nF (or if that isn't enough, then go down to .0047uF/4n7)
     
  6. GARAGE HERMIT

    GARAGE HERMIT Tele-Meister

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    speaker is a celestion g10s-50, but i tried a few other make's still too much bass,

    the only way the p/t could be classed as dangerous would be if someone took the rear of the cab off and then while it was still powered up to grab hold of it,
     
  7. GARAGE HERMIT

    GARAGE HERMIT Tele-Meister

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    tubelectron,

    thank's for the reply,
    yes, that 5c1 circuit is the one i've used,
    i've ordered some 0.0022uf and 0.001uf cap's to try them,
    i never made the cab it's a solid-state amp that i repurposed,
    you did a nice job with the VOX cab too,
     
  8. GARAGE HERMIT

    GARAGE HERMIT Tele-Meister

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    thank's,

    i'll try the 0.0022 and 0.001uf cap's first, if no good i'll order the 0.01uf and 0.0047uf to try,
     
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