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MXR Pedals don't sound right on a P??

Discussion in 'Effects [BG]' started by bonga_rascal, Jan 1, 2013.

  1. bonga_rascal


    Sep 9, 2010
    Hi, So I posted here some weeks back about getting an octave and an envelope filter. I purchased the MXR Bass Octave Deluxe and the MXR Bass Envelope Filter.

    I have an active 5 string - with EMG J's and an Aguilar OBP-3. The bass thru these pedals sounds phenominal.

    BUt for some reason, the same pedals sound woofy and unclear thru the P. I did tweak around a lot with the eq, but I just can't seem to get a sound I like. The P is a 50's style Precision P stock, although I will be adding a 62' Fender Pickup to it soon.

    ANy suggestions to make it sound better?

  2. RickenBoogie


    Jul 22, 2007
    Dallas, TX
    Put a boost or o/d pedal in front of the EF.
  3. Mattbass97


    Apr 9, 2011
    Mxr even released a video with those pedals using a p bass sounded epic!
  4. grygrx

    grygrx Lookout! Here comes the Fuzz! Staff Member Supporting Member

    Dec 24, 2003
    Columbia, MO
    Honestly, the first thing that popped into my head was that you were probably using old/bad/sad/wrong strings.
  5. The two basses have different output impedance and volume.

    You have 2 options.

    1) reset the pedal every time you change bass. Not the best solution.

    2) put some kind of boost in front of the pedals that you use for the P only. You want one with a nice flat EQ, but with a tone control. The reason for the tone control is that with the imp. change you'll notice more high frequencies because you'll not be getting the cable's resistance "tone suck" that you normally would.

    I recommend the Visual Sound clean boost, because it has long battery life, super flat EQ and has a passive tone control. It's also not expensive.
  6. CPplaysBASS


    Mar 17, 2007
    +1 ... I use a P with the MXR BEF and it's behaves a lot better when I have my OD in front feeding it a little more juice. Without it, I get a "woofy" sound on low decay settings and need the have the sensitivity at 3 o'clock (unless I really hit the strings hard, which is not my style).

    It's not an issue with a P-bass ... it's more about passive vs. active.
  7. One other thing: Env. filter are very input sensitive. Hence the sensitivity knob. You'll probably have to make the pedal more sensitive for the P.
  8. bonga_rascal


    Sep 9, 2010
    Cool. Thanks. I have a Bass RC Booster. I'll try the RC Booster before the BEF.
  9. Z-Bass


    Apr 22, 2004
    Pittsburgh, PA
    I'm having the exact opposite result with my MXR BOD. Sounds perfect with my passive Fender Jazz, however, not so great with my active Warwick (MEC pickups, Aguilar preamp). Gets very glitchy with the tracking when I move to the upper registers. The strings on my Warwick are older so I'm wondering if I've lost some fundamental needed to drive the pedal (just a theory).