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Thread: surround goop on dustcap ?

  1. #1
    Senior Member ratitifb's Avatar
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    surround goop on dustcap ?

    I just bought a Mint pair of pristine 2213H and the speakers dust caps have a very lite cover of speaker surround goop to make them look better. The amount is so light that it is not very sticky to the touch. Dustcaps are shinny black instead of dull.

    Due to damping action or other, is goop affecting the sound by changing the frequency response (supposed in high range mainly) ?

  2. #2
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    What model horn is that?

  3. #3
    Senior Member ratitifb's Avatar
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    Talking But what about surround goop on my dustcap ? If not i withdraw my avatar

    Quote Originally Posted by Thom View Post
    What model horn is that?
    The Nubian in a special design

    see http://www.audioheritage.org/vbullet...ghlight=nubian

  4. #4
    Senior Member UreiCollector's Avatar
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    What's a nubian?

    <this post is for all the fans of "chasing amy">
    Frederick "The Urei Collector"

  5. #5
    00Robin
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    Truthfully?? A Nubian is a goat,is a milking goat made known for it's type of nipples. Now,beins' I'm not a man or a man/woman,I do have some knowledge as to their being known as extra large and extra long nipples elsewhere. And that came from my ex-husband who travelled ALOT when he was young and just a welder. Now he owns the company...AND it is international,SO....I think I might believe him. And we are still the best of friends. Honest,with an 18 year old daughter in a private college,etc.
    But I know for sure about the goats. The rest is comparitively speaking, I believe.

  6. #6
    Senior Member ratitifb's Avatar
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    any idea ?

    would be fine
    Quote Originally Posted by ratitifb View Post
    I just bought a Mint pair of pristine 2213H and the speakers dust caps have a very lite cover of speaker surround goop to make them look better. The amount is so light that it is not very sticky to the touch. Dustcaps are shinny black instead of dull.

    Due to damping action or other, is goop affecting the sound by changing the frequency response (supposed in high range mainly) ?

  7. #7
    RIP 2011 Zilch's Avatar
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    4310s have a real crossover in them, as I recall, so it doesn't matter.

    I'd say there's likely some benefit to damping the HF from the woofer in the other models that just let it run full range. From what measurements I've done, the high end rolloff is not all that graceful.

    If it bugs you, have new domes installed, or clean those off with an appropriate solvent.

    Confirm driver polarity when swapping 2213H into 4310s. I forget if 123As are positive or negative, and I'd have to test to be sure myself....

  8. #8
    Senior Member ratitifb's Avatar
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    goop solvant ?

    Zilch, 4310 woofer run full range too. Could you suggest an appropriate solvent ? Tks

  9. #9
    Senior Member ratitifb's Avatar
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    acetone ?

    my seller has suggested i use acetone for ?

    If ok what about cosmetic paper dustcap issue after cleaning?

  10. #10
    Senior Member macaroonie's Avatar
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    just an idea

    M E K also known as dry cleaning fluid. It should not mess up the paper as long as you are gentle.

  11. #11
    Senior Member ratitifb's Avatar
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    Nice avatar and great work ... what MEK means ?

  12. #12
    Heather [Senorita member] hjames's Avatar
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    Quote Originally Posted by ratitifb View Post
    Nice avatar and great work ... what MEK means ?
    Methyl
    Ethyl
    Keytone

    methylethylkeytone - MEK

    Its a great solvent/cleaner with nasty fumes ...
    2ch: RPi-4, Oppo, Acurus RL-11,Jolida 502,Valencias,JBL L212,Von Schw
    7: Oppo BDP103D, B&K, UREI 809A, JBL B460

  13. #13
    Junior Member Phil Mundi's Avatar
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    Quote Originally Posted by ratitifb View Post
    The Nubian in a special design

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