Disconnecting the reverb tank

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

  1. slade

    slade Member

    Joined:
    Oct 8, 2021
    Messages:
    58
    Likes Received:
    79
    Location:
    Maryland
    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.
     
    StrummerJoe likes this.
  2. Pete Farrington

    Pete Farrington Well-Known Member

    Joined:
    Jan 18, 2021
    Messages:
    916
    Likes Received:
    928
    Location:
    Staffordshire UK
    Last edited: Oct 16, 2021
    StrummerJoe likes this.
  3. StrummerJoe

    StrummerJoe Well-Known Member

    Joined:
    May 3, 2021
    Messages:
    2,335
    Likes Received:
    5,950
    Go for it.
     
  4. slade

    slade Member

    Joined:
    Oct 8, 2021
    Messages:
    58
    Likes Received:
    79
    Location:
    Maryland
    Cool, thanks guys.
     
    StrummerJoe likes this.
  5. Chris-in-LA

    Chris-in-LA Well-Known Member

    Joined:
    Jul 19, 2018
    Messages:
    3,001
    Likes Received:
    2,915
    Location:
    Los Angeles
    Yeah, who needs reverb anyway? We play Marshalls here, not Fenders !!
     
    slade, Pete Farrington and SkyMonkey like this.
  6. slade

    slade Member

    Joined:
    Oct 8, 2021
    Messages:
    58
    Likes Received:
    79
    Location:
    Maryland
    Disconnected the reverb tank and that made a big difference in the tone. Much, much better.
     
    Edgar Frog and StrummerJoe like this.
  7. StrummerJoe

    StrummerJoe Well-Known Member

    Joined:
    May 3, 2021
    Messages:
    2,335
    Likes Received:
    5,950
    I'm a 'verb addict myself, but glad it works for you! :cheers:
     
    slade and Edgar Frog like this.
  8. Gutch220

    Gutch220 Well-Known Member

    Joined:
    Feb 19, 2018
    Messages:
    1,380
    Likes Received:
    1,372
    Location:
    NJ
  9. alpha al

    alpha al Active Member

    Joined:
    Oct 19, 2017
    Messages:
    72
    Likes Received:
    103
    Location:
    Gastonia, NC
    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.
     
    StrummerJoe and Pete Farrington like this.
  10. Pete Farrington

    Pete Farrington Well-Known Member

    Joined:
    Jan 18, 2021
    Messages:
    916
    Likes Received:
    928
    Location:
    Staffordshire UK
    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.
     
    StrummerJoe likes this.
  11. slade

    slade Member

    Joined:
    Oct 8, 2021
    Messages:
    58
    Likes Received:
    79
    Location:
    Maryland
    I removed the rca cable after I tested the amp. I was always hearing the reverb and changing the setting never changed the reverb.
     
    StrummerJoe likes this.
  12. thetragichero

    thetragichero Well-Known Member

    Joined:
    Jun 6, 2010
    Messages:
    3,348
    Likes Received:
    1,303
    Location:
    flo rida
    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)
     
    Pete Farrington likes this.

Share This Page