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  1. #1

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    Default SDA2 replacement parts

    Hey guys

    I have a pair of Old SDA2s that still rock after 10 years!.....Go Polk! Where can I get replacement parts? The mid-range is starting to sound kinda week. I looked on e-Bay but didn't find anything. Are the SDA2s also referred to as M10s?

    Thanks in advance..........any info would be great!

    .............Jimmy

  2. #2

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    JimH, Welcome to the Club Polk Forums! Best way to get new replacements are to call Polk Customer Service. Their toll free number is somewhere on the home page. They carry tweeters, drivers, etc.

    The Flea Market and eBay often have speaker parts also. I would get new from Polk if I were you.

    Welcome!:)
    Carl

  3. #3

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    BTW, SDA2's are not M10's. How many tweeters do you have in each speaker? One or two? Do you have the interconnect cable?

    Carl
    Carl

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    Customer Service:
    polkcs@polkaudio.com
    9am - 6pm, M-F, EST (USA)
    800-377-7655 toll free phone
    410-764-5470 fax

  5. #5

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    The mid-range is starting to sound kinda weak.
    What makes you say kinda weak? Are you hearing any distortion/break up?
    '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."

  6. #6

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    Thanks for all the posts. I have the phase cable and it's connected. I mentioned in an earlier post that I've had these speakers for 10 years, it's been more like 20. I bought them new in 1986........simple math, always was a weakness!

    My speakers sound like the mid range is just going away. I can hear the music fine on TV but the voices are faiding. Any ideas?

    I have one tweeter, two mid ranges and one sub per speaker.

  7. #7

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    Start with making sure the drivers and tweeters are actually working. If they are, then you may have a case of 20 year old caps on the crossovers which are failing. You can change them yourself, if you're handy or have a shop do it for you.
    '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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    I've been doin alot of reading today and have realized that my SDA2s are way under maintained. I'm a pretty handy guy with a screw driver and with making cables. Are there any sites that give detailed info on how to keep these speakers hoppin for another 20. I don't mind doin the work myself actually I'd enjoy it!

    I want to replace the mid-ranges as my kid has pushed the cones in some, I did cut his finger off for that though.

    thanks again for all the posts, it's helping me out alot

    ............jimmy

  9. #9

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    Since you bought them new in '86 they are most likely the SDA 2A's, which use the MW6510 mid-drivers. Polk no longer sells that model, instead they offer the MW6503, which has a slightly different sound. You could try scotch/masking tape to pull the dents out of the dust covers.

    There should be plenty of info here on tweeter and crossover upgrades, but if you have any detailed questions, ask away.
    '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."

  10. #10

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    Quote Originally Posted by F1nut
    you may have a case of 20 year old caps on the crossovers which are failing. You can change them yourself, if you're handy or have a shop do it for you.
    Caps on the crossovers?

    can u explain this in hillbilly? I fell pretty confident that I'm a good cap crossover changer, if I knew what or where one was?

    Thanks.............Jimmy
    Last edited by JimH; 05-28-2006 at 02:00 PM.

  11. #11

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    Caps=capacitors. On your crossover boards you will find capacitors, resistors and inductors. Polk used electrolytic and mylar capacitors. The electrolytic caps have an estimated life span of ten years, give or take, so yours may not be performing as well as possible. However, you should first make sure that all your drivers and tweeters are working before anything else. Since the cabinets are a sealed system, it may appear that all the drivers are working when in fact they may not be. You can take one out at a time, hook it up directing to the output of one channel on your receiver/AVR/amp and at very low volume listen if it works. The tweeter should be obvious, just put your ear up to it.
    '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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    Cool, I can do that! thanks for the translation

    if the driver(s) are indeed not working, are there electronics (besides the capacitors) in the cabinet that could account or this or do I just replace the driver?

    .............Jimmy

  13. #13

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    If any of the drivers are not working, it's most likely just a bad driver and has nothing to do with the crossover. If you have one or more bad or weak caps, the sound will be degraded.
    '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."

  14. #14

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    Jimmy,

    Check out this link for some info for tweeter and crossover upgrades to the SDA-2 http://www.polkaudio.com/forums/show...tion+Crossover

    Carl
    Carl

  15. #15

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    You can also use a vacuum to pull the dents out...Just make a circle with your hand over the nozzle so you can break the suction as soon as soon as possible.

    I know it sounds scary, but I did it and it worked fine. Tape works too though I guess. Never tried it.

    Now I'm worried about my SDA's. They are the only pair I've ever heard so I'm afriad I wouldn't even know what degraded midrange sounded like. Can you be alittle more specific about what you are hearing? I have SDA2B's BTW.
    SDA 2B
    Carver m0.5t
    AMC pre
    Cobalt Cables

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