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MXR-M80 Popping issue??

Discussion in 'Effects [BG]' started by freebeer, Dec 7, 2005.

  1. Dec 7, 2005 #1
    freebeer

    freebeer

    Sep 24, 2002
    Suburbs of Detroit...
    Hey everyone,

    I recently got an MXR M-80 Bass DI from a fellow talkbasser. Cool pedal. I have been trying it out on some of my different basses and it sounds really nice. I decided to try it out with my G&L L2000 and it sounds great. Problem is whenever I switch the treble boost switch on the G&L the thing ommits a fierce "POP" when the swith is moved. Anyone else seen this with this pedal/bass combination? Any ideas on a potential way to make it stop doing this?
     
  2. Dec 7, 2005 #2
    Jay Terrien

    Jay Terrien

    Dec 2, 2003
    LOS ANGELES, CA
    My MXR M-80 bass di pedal makes a POPPING noise whenever I hit either of the two foot buttons. Same thing with my Peterson tuner. There's just something weird about that type of metal switch.................

     
  3. Dec 8, 2005 #3
    niftydog

    niftydog

    Jun 23, 2005
    Canberra, Australia
    You've just discovered that there are pitfalls to this true bypass stuff! Here's an excellent article by the legendary R.G. intended for DIYers that might help you work out what's going on. Without knowing the MXR schematic I can't tell you if any of these remedies are inplace on the factory units.
     
  4. Dec 8, 2005 #4
    freebeer

    freebeer

    Sep 24, 2002
    Suburbs of Detroit...
    I am a little confused though as it's when I move the switches on the L2000 when I get a pop, otherwise the M80 is dead silent...
     
  5. Dec 8, 2005 #5
    niftydog

    niftydog

    Jun 23, 2005
    Canberra, Australia
    oh sorry, obviously read that post wrong!

    So, does this happen when the effect is engaged or bypassed or both?

    There's no hint of the pop when the bass is connected directly?
     
  6. Dec 9, 2005 #6
    freebeer

    freebeer

    Sep 24, 2002
    Suburbs of Detroit...
    No popping with the bass plugged directly in the amp. Popping happens with the effect on or off.
     
  7. Dec 12, 2005 #7
    niftydog

    niftydog

    Jun 23, 2005
    Canberra, Australia
    I would suggest that, if you can, try a different pedal - like if you can get down to the shop you bought it from and try another one with your bass.

    Then, if it still happens, ask the techs to look at your bass to check if the DC blocking caps are doing their job.
     
  8. Dec 12, 2005 #8
    momo

    momo

    Oct 22, 2005
    Huntington Beach, CA
    The only thing I could think to try is the ground switch. It could be something there.