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  1. #1

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    Default SDA II's - tweeter not producing sound (Mfg. 1986)

    My SDA II has two tweeters. One is not producing any sound. I confirmed that it is not the tweeter component itself. I pulled out both tweeters and I found that the tweeter that is not working has a white and a blue wire to it whereas the other tweeter that is working has a white and black wire. I suspect that this means something. I am not skilled at electronics - so my question: is this a "simple" problem that I could attempt to tackle myself or should I not waste my time and take it in for servicing? And if servicing is needed, would any repair shop do or must I use a Polk Authorized service person?

    Thanks.

  2. #2

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    How did you determine that, "it is not the tweeter component itself."
    'Political Correctness'.........defined

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  3. #3

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    Well, I purchased a replacement tweeter and the problem remains. I also switched the "bad" tweeter with the "good" tweeter and found that the "bad" tweeter does work.

  4. #4

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    Ok, in that case you have a bad polyswitch on the corresponding crossover board. There are a total of 4 polyswitches between your two speakers, you should replace all 4. Call Polk CS and they will send them to you.

    Edit: Depending on the year of your SDA 2's, there might be fuses instead of polyswitches. Look on the binding post plate for any fuses.
    Last edited by F1nut; 01-29-2006 at 09:53 PM.
    'Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end."

  5. #5

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    Great..... So, you think I could do this myself? Any idea what this would cost?

  6. #6

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    Have you looked on the back yet?
    'Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end."

  7. #7

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    Fuses? I do not see any external fuses. Would the fuses be internal?

  8. #8

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    Nope. You have polyswitches. If you ask Polk very nicely, they will send them for free. Can you solder?
    'Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end."

  9. #9

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    I can try. I am a bit concerned about getting to these wires though. Do I need to pull out the other components to reach the wires?

    Thanks.

  10. #10

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    Remove the PR (the big round thing at the bottom) to get access to the crossovers, make a drawing of what wire goes where, unbolt the crossovers and warm up the solder gun. The new polys look a lot like the old ones, easy to ID.
    'Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end."

  11. #11

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    Thank You.....

  12. #12

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    You are welcome. If you have any further questions once you get inside, please ask.
    'Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end."

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