Disconnecting the reverb tank

Discussion in 'The Workbench' started by slade, Oct 16, 2021.

  1. slade

    slade Member

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    Hello, I have a jcm 2000 tsl and wanted to know if I can disconnect the rca wires on the tank and still be able to play the amp? I’m always hearing the reverb.
     
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  2. Pete Farrington

    Pete Farrington Well-Known Member

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    Last edited: Oct 16, 2021
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  3. StrummerJoe

    StrummerJoe Well-Known Member

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    Go for it.
     
  4. slade

    slade Member

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    Cool, thanks guys.
     
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  5. Chris-in-LA

    Chris-in-LA Well-Known Member

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    Yeah, who needs reverb anyway? We play Marshalls here, not Fenders !!
     
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  6. slade

    slade Member

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    Disconnected the reverb tank and that made a big difference in the tone. Much, much better.
     
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  7. StrummerJoe

    StrummerJoe Well-Known Member

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    I'm a 'verb addict myself, but glad it works for you! :cheers:
     
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  8. Gutch220

    Gutch220 Well-Known Member

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  9. alpha al

    alpha al Active Member

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    I would recommend insulating the male RCA pins with tape. You don't want them grounding out with a solid state drive circuit. It could blow the driver IC.
     
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  10. Pete Farrington

    Pete Farrington Well-Known Member

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    It’s bad practice to drive a transformer coupled valve output stage into an open circuit. As there’s risk of damage. To mitigate that, I suggest to remove the valve or fit a load resistor.
     
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  11. slade

    slade Member

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    I removed the rca cable after I tested the amp. I was always hearing the reverb and changing the setting never changed the reverb.
     
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  12. thetragichero

    thetragichero Well-Known Member

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    as mentioned, transformer-coupled reverb (like you'll find in older-style fenders and probably marshalls, although frankly i don't look at reverb in marshall schematics) should have a load for the driver. some old ampegs use capacitor-coupled reverb (this is what i usually do on my own builds, because i can use a 12dw7 for both driver and recovery. no additional triodes needed, no transformer. nice and simple)
     
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