Hey Scooby, it's an "RWRP" Mystery

Discussion in 'Tone Zone' started by Paully, Jun 20, 2017.

  1. Paully

    Paully Well-Known Member

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    Hi,
    thanks for coming in to my thread ;)
    I've got what's probably a simple question for all you guitar Gurus. I've Googled the living daylights out of the question and haven't been able to find a definitve answer.
    First about my guitar:
    Squier Strat SE
    SSS Pick ups
    1 Volume
    2 Tones
    Basic Strat Wiring
    Tone Split Mod
    Bournes Premium Pots 250k
    CRL 5 Way Switch
    Neck P'up = 5.75
    Mid P'up = "RWRP" 5.75
    Bridge P'up = 5.75.

    Electrical Modifications:
    Treble bleed = .0015 uf /.100k
    Tone Split Circuit = "Knob 1"
    Adjusts Neck & Middle p'ups. Running 250k audio potentiometer with .022 capacitor.
    "Knob 2"
    Adjusts Bridge p'up. Running 250k audio potentiometer with .047 capacitor.
    So after all that data, here's whats probably a simple question.
    The middle (RWRP) pick up is louder than the neck and/or bridge pick up. I know that it's not a hardwire fault as I've "dis" and "re" assembled the guitar three times. Each time with new components which were tested good with a D.M.M. before installation.
    So, I know that it's a normal condition.
    My question is: Why is the "RWRP" more sensitive than a normally wound pick up?
    Thanks for assuaging my curiosity.
    Paully
     
  2. Steven Howes

    Steven Howes Active Member

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    RWRP? Reverse wound, reverse Phase? Could it just be something as simple as the pickup height? I know When I replaced my pickups I had to fiddle a bit so the the volumes were all fairly level without loosing the snap of a strat bridge pickup (which I love).
     
  3. Paully

    Paully Well-Known Member

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    Thanks for the response. However,
    There are no strings on the instrument at the present time.
    Phenomena occurs when pole piece is tapped with a metallic object.
     
  4. The Convert

    The Convert Well-Known Member

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    I've noticed this, too. I do a lot of custom electronic work too. When I rewire, before i string, I plug into a little amp and tap with a fret rocker, and pretty consistently, on pos 3, the middle pickup seems to 'clack' the loudest (except maybe for the open bridge).

    I don't have an answer for you, except to say that if this is the only unusual thing I observe, I've come to be confident to string it up and adjust the pup heights.

    The only time I remember a problem where things were technically working, but still a sonic problem, was when mixing pups. As I recall, I had an SD SSL-5 neck, SD QP bridge, and the original Squier ceramic RWRP mid. In this case the mid was just too weak and so the 2 & 4 positions were squirrelly regardless of pup height, etc, even thought the tap test was loud. Once I popped in an SSL-1 RWRP, it was magical.

    For you though, it sounds like you have a matched set of pups. I doubt you have any kind of wiring issue. At this point, unless someone else can think of something, I'd throw on $6 of strings and see what you really have.

    Good luck!
     
  5. Paully

    Paully Well-Known Member

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    Thanks,
    Sounds like a plan. ;)
     
  6. Davis Sharp

    Davis Sharp Well-Known Member

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    I don't have the answer, but let me ask a stupid question. Do you get the same effect with the RWRP is the only connected pup or if it is connected to a different switch position. You might have to download a dB meter app to your phone for this.

    Edit: Never mind. The Convert's idea sounds better.
     
    Last edited: Jun 20, 2017
  7. Paully

    Paully Well-Known Member

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    Well guys,
    I went back under the hood and hit everything with the V.O.M.
    Middle still reads good, however Neck and Bridge came up 0.0k.
    Did a visual on the circuit, top to bottom. No problem there.
    Took Neck & Bridge completely out and removed the covers. Both exhibited a break in the wire that's wrapped around the bobbin.
    Don't understand why the Neck & Bridge would be broken and the Middle survived whatever broke the other 2.
    Ordered a new set of pick ups. So it should be up and running soon.
    Thanks for the assistance.
     

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