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Seymour Duncan Classic Stack Plus

Discussion in 'Pickup Forum' started by EC Strat-boy, Jun 10, 2019.

  1. SILENCER

    SILENCER Strat-Talk Member

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    The Fender noiseless were a nice try, but a tad brittle next to Boss Duncan's offering. They just work for me.

    I have not tried the latest revision of the Classic Stack, as mine are from 2001 or so. What has changed? I'll likely be dropping a set in a recently acquired 2005 American Deluxe V neck. It has Duncan Antiquity Surfs in there now. Great pups, just not exactly what I need. I'll put them up for sale here later if anyone is interested.
     
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  2. EC Strat-boy

    EC Strat-boy Strat-O-Master Strat-Talk Supporter

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    You know, I’m not sure what’s changed since then with the classic stack plus. I’ve got stack 4 All I know is they have a very nice chimey too end and then interact with the tone control EXTREMELY well. They’re a bit more scooped in the mids vs the fender vintage so they pair really nicely with the mid boost on my guitar. You can roll the tone off (250k .022) all the way and it’s just awesome grit / dirt but not muddy. Give em a go- you won’t be disappointed
     
  3. EC Strat-boy

    EC Strat-boy Strat-O-Master Strat-Talk Supporter

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    The folks at SD describe them as a late 50’s tone and as that they are the noises version of the SSL 1 PUPs if that helps
     
  4. Seymour Duncan

    Seymour Duncan Senior Stratmaster

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    The older version had more symmetrical coils. The Plus design has a smaller hum-cancelling coil. They have a rounder high end and more power than most 50s pickups.
     
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  5. EC Strat-boy

    EC Strat-boy Strat-O-Master Strat-Talk Supporter

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    Does the smaller hum cancelling coil lead to improved tone?
     
  6. Seymour Duncan

    Seymour Duncan Senior Stratmaster

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    I think the newer ones sound better, if that's what you mean.
     
  7. EC Strat-boy

    EC Strat-boy Strat-O-Master Strat-Talk Supporter

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    Yes, just wondering what effect a smaller dummy coil had.

    They sound GREAT!!
     
  8. StratGuy4692

    StratGuy4692 Strat-Talker

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    I have the newer ones and theyre a knock out. Love em.
     
  9. Seymour Duncan

    Seymour Duncan Senior Stratmaster

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    It essentially only cancels hum. It doesn't impart much, if any, on the sound. It is one of the reasons this is my absolute favorite Strat pickup.
     
  10. sgarnett

    sgarnett Strat-O-Master

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    Interesting. Is it connected in series or parallel with the active coil?
     
  11. sgarnett

    sgarnett Strat-O-Master

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    Is there room to lower the stacks enough in a vintage-style body (with the shallower cavities)?
     
  12. Seymour Duncan

    Seymour Duncan Senior Stratmaster

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    You can see the dimensions of the Classic Stack Plus here. It is .85" deep.

    It is series, but it doesn't work the way a typical humbucker does. This is from our former product developer of the Classic Stacks Plus:

    The Stack Plus pickups use a top coil that is significantly larger than the bottom coil–it’s almost the same size as a traditional Strat pickup coil. The top coil is shielded with a “flux transfer plate” which attracts hum and “injects” it into the much smaller bottom coil, whose sole purpose is to eliminate the hum. The top coil gets the tone. The bottom coil kills the hum.

    In addition to this unique design, SD uses a device seldom seen outside a physics laboratory called a Helmholtz coil, to calibrate each individual Stack Plus pickup for maximum hum cancellation. The Helmholtz coil generates an extremely uniform magnetic field that allows test engineers to accurately simulate, on the test bench, the noise conditions found in a typical performance environment. This type of testing and calibration, in addition to the unique magnetic structure of the Hot Stack Plus system, allows it to achieve extraordinarily low levels of 60-cycle (or 50-cycle) hum.

    If you've ever taken an SD factory tour with me, you've probably seen the Helmholtz coil.
     
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  13. sgarnett

    sgarnett Strat-O-Master

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    Very interesting, thanks!
     
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