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Thread: A wet 2441 !

  1. #1
    Senior Member jbl_man_uk's Avatar
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    A wet 2441 !

    Hi Guys,ok,does anyone know how to take the driver apart,(the iron pot/magnet assembly)as i have one here full of water (dont ask! ),and i cant see how to get it out,u can hear some sloshing around inside the iron pot ........any help would be appreciated!
    Ian. London.UK

  2. #2
    Administrator Robh3606's Avatar
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    I would pop the top, remove the diaphram and invert it. You should be able to get most of it out through the Voice Coil gap. Maybe try some filter paper to wick some more out. What ever's left should evaporate out. I don't know how you would protect the gap from rust?? Unless it's in the space betwen the magnet and the throat??? Is the throat cracked??? Not sure it that will work???

    Good Luck

    Rob

  3. #3
    Senior Member jbl_man_uk's Avatar
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    yes,thanks Rob,i have taken the diaphramm out and dried all that,but can hear water sloshing inside the pot,behind the pole-plate if i shake it.

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    Administrator Mr. Widget's Avatar
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    If you can get a vacuum pump, one of these inexpensive desiccant chambers will do the trick. We use one here for our model shop and I once put my cell phone in the chamber after it went swimming... the chamber dried it out thoroughly and quickly and the phone survived beautifully.

    http://www.tedpella.com/desiccat_html/vacpoly.htm


    Widget

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    Barring a vacuum chamber, I would suggest alcohol. It will mix with the water and evaporate faster. Also I'd raise the temperature. Unfortunately I'm not sure how warm you can safely raise it. If your stove has a bread proofing compartment that shouldn't be to warm. I wish I knew whether you were safer spraying the inside with WD40 or taking your chances with rust. Myself I'd spray the WD40 all up in it because I think that will be easier to get rid of later than the rust you will probably get if you don't but that's a guess and I don't think I'd call it educated.
    If you put alcohol in it, don't put it in a gas stove.
    I just looked at those vacuum chambers. They're pretty cheap. Anyone who does AC work will have a vacuum pump.

  6. #6
    RE: Member when? subwoof's Avatar
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    Had the same thing happen to a number of 2440's that were outside mounted ( and poorly )...hovever the internal rust flakes might come back to wreck the driver anyways...

    The area where the water sits is not vented or easy to access by any of the normal means - you have to actually drill a small hole in the top plate and invert it.

    Remove the diaphram and clean + tape over the gap and the entire phase plug with GOOD, NEW electrical tape.

    Measuring from the from the center, drill a hole about 1/2 inch outside the 6-32 holes that the dia mounts to - this is important so you don't hit the centering ring which is glued on in about 1/2 of the drivers.

    Tap the hoe with a 10-32 tap (rack bolt ) and get every single teeny tiny piece of debris removed before you even think about reinstalling the diaphram.

    Be sure to use a good oscillator to get proper alignment.

    sub

  7. #7
    Senior Member jbl_man_uk's Avatar
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    Yes,thanks for the input guys,i found this cutaway photo of a 375 which gives a good clue to where the internal pond would be!..so i think maybe the tiny-hole approach would be the best bet.

    http://www.audioheritage.org/images/...xsect-crop.jpg

  8. #8
    Maron Horonzakz
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    What ever you do, dont apply WD40 to that driver...That the dumbe,st thing you can do & the dumbe,st thing I ever heard...A hair dryer can be useful in quickly drying things out in the gap...The faster you dry things out the less chance things will corrode/rust..

  9. #9
    pelly3s
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    if all else fails find someone with a degaussing machine and have them take the driver apart so it can be cleaned properly.... just make sure they know what they are doing when putting it back together

  10. #10
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    Quote Originally Posted by jbl_man_uk View Post
    ...i have one here full of water (dont ask! )
    'Sorry - now you've got us curious - what happened?

    John

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    Senior Member jbl_man_uk's Avatar
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    Ok John,here`s the story....this driver belongs to a freind of mine,it was attached to a 2350 radial horn,and left pointing horn-mouth skyward in a leaky bus for a week after new-years eve before it could be retrived(transport difficulties i gather)....in the meantime the 2350 horn had acted a large "funnel" channeling all the rain water nicely into the driver........
    Last edited by jbl_man_uk; 01-23-2007 at 09:44 AM. Reason: photo attached

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    Quote Originally Posted by jbl_man_uk View Post
    Ok John,here`s the story....this driver belongs to a freind of mine,it was attached to a 2350 radial horn,and left pointing horn-mouth skyward in a leaky bus for a week after new-years eve before it could be retrived(transport difficulties i gather)....in the meantime the 2350 horn had acted a large "funnel" channeling all the rain water nicely into the driver........
    I'd just stick a Radian diaphragm in it and use it. You aren't going to hear it sloshing around in a fixed installation.

  13. #13
    Maron Horonzakz
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    Chuck it & find a clean 2450 driver.

  14. #14
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    Quote Originally Posted by Maron Horonzakz View Post
    Chuck it & find a clean 2450 driver.
    That'd be my first thought. Toss it into the heap destined for the scrap metal recycler. It's 30 pounds.

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    Back in the day, I used to strech a piece of thin plastic..(Food wrap) over the driver mouth between the driver and the horn,before I bolted the horn on. It's acoustically transparent, and you can fill a monitor horn full of, uh,...liquid..and do no damage. Check them every once and a while just to make sure they hadn't deteriorated...try it, works great! I'm sure I saved hundreds of dollars in monitor diaphragms....

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