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Thread: foam or felt in the cover

  1. #16
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    I don't care too much for foam surrounds that also melt with time.

  2. #17
    Senior Member sonofagun's Avatar
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    "Most foams are made from polyurethane which ultimately reverts to a liquid sticky state similar to the parent polyurethane paint finish-genere."

    The foam I use does not disintegrate or rot - is an improved formula.

    Course, you should allready know that

  3. #18
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    Quote Originally Posted by grumpy View Post
    Yep. This URL specifically has the self-adhesive backing, 1/4" thickness, and
    reasonable storage requirements (12"x12" square). $7 + S/H/Tax...

    http://www.mcmaster.com/#87415k53/=49agru
    I ended up ordering a 12" square by 1/2" thick piece and it arrived the next day. I cut out a piece the same size as the stock foam and put it in. The 1/4" thick felt probably works just as well. The 5" diameter x 1/2" thick foam for a 2445 from JBL Pro is backordered for a month or two.
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  4. #19
    Senior Member 4343's Avatar
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    Cool

    Quote Originally Posted by 4313B View Post
    I ended up ordering a 12" square by 1/2" thick piece and it arrived the next day. I cut out a piece the same size as the stock foam and put it in. The 1/4" thick felt probably works just as well. The 5" diameter x 1/2" thick foam for a 2445 from JBL Pro is backordered for a month or two.
    Now there is a diaphragm that does NOT need any haphazard foam damping!

    If only I could afford Aquaplas...
    Mike Scott in SJ, CA
    Drive 'em to the Xmax!

  5. #20
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    Thickness of the felt (or foam) for JBL 2425H

    No one knows what the thickness of the felt (or foam) should be for JBL 2425H ?
    There is nothing either good or bad but thinking makes it so. William Shakespeare

  6. #21
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    Felt for 2420? 1/4 or 1/2

    I have to replace foam for felt. What would be the tickness? 1/4 or 1/2?

  7. #22
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    Quote Originally Posted by Mikool35 View Post
    No one knows what the thickness of the felt (or foam) should be for JBL 2425H ?
    The foam is 2.5" in diameter and .5" thick.

  8. #23
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    Oh, very nice, thank you Rusty
    There is nothing either good or bad but thinking makes it so. William Shakespeare

  9. #24
    Senior Member pos's Avatar
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    IIRC the felt pads in TAD 4" diaphragm drivers are less thick than that.

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