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  1. 06-11-2007 10:12 PM #1
    Gary Batson
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    Default MONITOR and SDA series woofers

    Polk made a lot of 6.5 in. woofers for their monitor series and SDA series speakers that all look the same but different model numbers. Does anyone know the differences between these speakers and if any of them are interchangeable?

    What are the new replacement woofers from Polk like? Do they look the same? I think I read somewhere that they're not sticky. I'm sure the originals were sticky for a reason.
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  2. 06-11-2007 10:19 PM #2
    ben62670
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    There were a few 4ohms versions, and several 8ohm versions. The early MW6500 was very efficient, but bottomed out if overly driven. It slowly worked up to the 6503 which handled more power, and resisted bottoming out. As for the sticky part I don't know if the originals came sticky, or got sticky after a couple years.
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben
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  3. 06-11-2007 10:31 PM #3
    F1nut
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    All the drivers are designed with different specs and therefore are not really interchangeable. The original drivers came sticky and as far as I know the replacements are too.
    'Political Correctness'.........defined

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  4. 06-11-2007 10:58 PM #4
    Jockos
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    Are the new replacements out already, ie 6510, 6502?
    Last edited by Jockos; 06-11-2007 at 11:02 PM.
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  5. 06-11-2007 11:02 PM #5
    ben62670
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    Quote Originally Posted by Jockos View Post
    Are the new replacements out already 6510ie?
    Nope I just ordered the other day.
    I don't know about the 6502
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben
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  6. 06-11-2007 11:14 PM #6
    MillerLiteScott
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    Why are they sticky?
    I like speakers that are bigger than a small refrigerator but smaller than a big refrigerator:D
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  7. 06-11-2007 11:14 PM #7
    Gary Batson
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    Quote Originally Posted by ben62670 View Post
    There were a few 4ohms versions, and several 8ohm versions. The early MW6500 was very efficient, but bottomed out if overly driven. It slowly worked up to the 6503 which handled more power, and resisted bottoming out. As for the sticky part I don't know if the originals came sticky, or got sticky after a couple years.
    Yep; My SDA 1's were sticky the day I bought them in 1983. I'm surprised they haven't dried up after all these years. Some things are just better sticky.:D
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  8. 06-11-2007 11:24 PM #8
    F1nut
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    Why are they sticky?

    It's doped paper, which helps the cone keep it's shape.
    'Political Correctness'.........defined

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  9. 06-11-2007 11:27 PM #9
    Gary Batson
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    Quote Originally Posted by MillerLiteScott View Post
    Why are they sticky?
    Just a guess, But I think it was used as a damping material. Polk literature says they use a three layer cone construction. It must be one of the layers. And I've seen mentioned somewhere before about a damping material used in the cone.
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  10. 06-12-2007 01:36 AM #10
    Jockos
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    I read somewhere that the sticky coating reduces resonance and leads to cleaner midrange.

    Jockos
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