Strange pedalboard noise problem

Discussion in 'Effects, Pedals, Strings & Things' started by Anthropomorphic, Mar 1, 2012.

  1. Anthropomorphic

    Anthropomorphic Member

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    I have around 10 pedals running off couple of power supplies: 18v(150mA) 3 pedal Daisy chain, 9v (700mA) daisy chain for the rest. I've added up the mA consumption of the chains and should be more then enough.

    Now to the problem: In general the pedals are quiet, but sometimes a strange static noise builds up. When i turn off the power and on again, then all is quiet again. This has happened twice at a specific rehearsal room, but i can not get the noise build-up to happen on demand to find the source of the problem.

    I've had noisy pedals before, but always with a CONSTANT hum or static. Now im not sure what's the problem and would a power supply with isolated outputs like voodoolabs plus2 fix the problem?

    Has anyone had this kind of problem before?
     
  2. Ed Reed

    Ed Reed Senior Member

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    Try powering the pedals with batteries and see if that helps. If so I'd ditch the power supply and get one that's isolated.
     
  3. mbos4115

    mbos4115 Member

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    It happens in my rig too. I found that it is my CMATMODS Signa Drive that producing the static noise (as my DS-1 is dead quite when engage).

    The Signa Drive is all quite when I first power up and engage, then after a few minutes or so, it starts to produce some static noise. I turned off the power and plugged it back to the wall again and it became all quite... Of course, a few minutes later, the noise starts...

    I will try the battery method tonight as recommended although I doubt it is the power supply, since it only happened after I have added and rearranged my pedal board (added Flashback delay & Protons). And I have tried plugging in almost every wall plug in the house...even bathroom...(I am using MXR Power Brick)

    Anyway, here is a pic of my rig:

    [​IMG]
    Buffer > VP Jr. > Proton > Signa Drive > DS-1 > ISP > Keeley Comp > PS-6 > CE-2 > TC Flashback

    Thank you guys!
     
  4. erksin

    erksin Member

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    Isolated power supplies make a world of difference. Truly.
     
  5. Hooya

    Hooya Member

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    I'm curious what three 18v pedals you have that add up to less than 150mA. I would bet one of those is the problem.

    Chaining some digital pedals, especially digital delays, along with analog dirt circuits can get quite noisy. I had some Marshall Echohead pedals that really did not like being on the same power chain as any fuzz pedal.
     
  6. Anthropomorphic

    Anthropomorphic Member

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    For me the problem was a bad cable. lifetime warranty they say :)

    For the 18v 150mA adapter, had it running MXR Stereo Chorus, 10band EQ and OCD, no problem there. Don't know a single pedal that actually needs 150mA, not counting the multi-fx pedals.
     

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