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Thread: T.A.D. 2001 Driver - Unusual Configuration

  1. #1
    Senior Moment Member Oldmics's Avatar
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    T.A.D. 2001 Driver - Unusual Configuration

    Got me an unusual T.A.D. driver in my mitts today.

    It appears to be a real early 2001 but with a few distinct differences.Perhaps a Bart L prototype with some JBL holdovers.

    Take a look see at the pictures and let me know what you think.

    Anybody ever seen another?

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  2. #2
    Senior Moment Member Oldmics's Avatar
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    More T.A.D. Pics

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  3. #3
    Administrator Robh3606's Avatar
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    Hello Oldmics

    What an oddball. Have you ever seen a driver without the horn interface not machined flat and crinkle painted?? What's beyond the bug screen is that painted as well and is there a taper on the painted surface part of the throat?? It look's straight but that could just be an illusion. That almost looks like a woofers pot not a CD?? The top plates are quite different as well?? Look's like an old Le-85

    Sorry I am asking more questions, to answer yours No So no damn help at all

    Rob
    "I could be arguing in my spare time"

  4. #4
    Senior Moment Member Oldmics's Avatar
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    Beyond the Bug Screen - Sounds Like a Horror Movie

    Behind the screen appears to be the magnetic slug with an unpainted chamber directly to the rear of the top plates phase plug.
    No taper on the expulsion oriface.And no shorting ring as in the later driver.

    What gets me is the obvious difference in the end caps machining of both sides on the early unit.

    Really looks JBL to me.Kinda like a JBL pot and magnet with a different top plate to accomidate the T.A.D. diaphragm.I think it was one of Bart"s science projects.

    Beats me

    Oldmics

  5. #5
    Administrator Robh3606's Avatar
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    What gets me is the obvious difference in the end caps machining of both sides on the early unit.
    The walls look really thick as well??Rob
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    "I could be arguing in my spare time"

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    Administrator Mr. Widget's Avatar
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    Hey oldmics,

    What makes you think the odd duck driver is a TAD?


    Widget

  7. #7
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    Oldmics,

    I believe the driver ( on the right within your first pic ) is a Pioneer PD-801 ( even though the little red sticker says something different ) .

    I'll post a few pics ( of a pair of PD-801's ) later .

    <>

  8. #8
    Senior Moment Member Oldmics's Avatar
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    Quote Originally Posted by Mr. Widget View Post
    Hey oldmics,

    What makes you think the odd duck driver is a TAD?


    Widget
    The 2001 diaphragm fits in perfectly and sounds great.The guy who I acquired it from used to work for a major sound company who used vast amounts of TAD drivers

    He also said it had a TAD identification emblem on it.

    Has the same gauss measurement as a 2001driver (about 18K).

    Maybe Earl is onto something. About it being a PD series.

    Oldmics

  9. #9
    Member ds23man's Avatar
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    Pioneer=TAD

    http://pioneerproaudio.com/en/ourstory.html

    Maybe a pre 1978 driver?

  10. #10
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    Here are the pics ;
    Attached Images Attached Images     

  11. #11
    Senior Member pos's Avatar
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    Interesting, thanks Earl!
    Do these have Be diaphragms?
    I suppose they do looking at the protection mesh...

    Early Pioneer Exclusive units have binding posts implementations similar to the TD2001:
    http://www.audio-heritage.jp/PIONEER...it/ed-911.html
    http://www.audio-heritage.jp/PIONEER...it/ed-915.html

  12. #12
    Member ds23man's Avatar
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    If you look at the small label on the side you can see the old pioneer logo and PD-005A.

    Maybe this is a very early driver.

  13. #13
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    Some more info , another ( expired ) ebay thread .






  14. #14
    Member ds23man's Avatar
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    Quote Originally Posted by Earl K View Post
    Some more info , another ( expired ) ebay thread .

    Same label, so it is a PD-801!

  15. #15
    Senior Moment Member Oldmics's Avatar
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    Thanks guys

    So once you guys diagnosed what it was I did some diggin and found out that it is supposedly the offering previous to the TD 2001.

    The PD used a Be diaphragm BUT the top plate was configured differently. A newer style TD2001 diaphragm wont directly bolt in..

    A new diaphragm can be redrilled to fit the PD top plate.My unit has a metal template that was used to reconfigure and redrill the top plate to accept the newer diaphragms.

    Thats why the TD diaphragm fit right into my unit.

    Lots of knowledge here and I thank you all

    Oldmics

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