Monitor 4 eggcrate/batting placement

I went to epoxy my drivers and the eggcrate was disintegrated... So exactly where should I place the new eggcrate foam and batting?

Best Answer

  • wispolkboywispolkboy Posts: 61
    Accepted Answer
    Faustin wrote: »
    I had a pair of early Polk 4's with the Peerless tweeters several years ago. Mine just had piece of egg crate foam wedged behind the 6 1/2 drivers. It was falling apart. I ended up using some polyfill in each speaker and left out the foam.

    Thanks..
    I think that is what I will probably end up doing....

Answers

  • F1nutF1nut Posts: 45,432
    Look on the inside cabinet walls for traces of the glue/foam. That's where it was.
    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 t-u-r-d by the clean end."


    President of Club Polk

  • Thanks for your reply! I only see glue where the cabinet was glued...
  • GardenstaterGardenstater Posts: 1,663
    edited August 2020
    In my 7B's the polyester fill was rolled or fan folded over itself and stuffed up behind the midbass driver and the tweeter. No glue whatsoever. Don't know about the 4's. Egg crate?? Was that something that Polk used or a previous owner put in there?
    George / NJ

    Polk 7B main speakers, most mods comp. (1979, orig owner)
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  • I have 2 sets, both from '82ish
    Different original owners.... Both had the eggcrate foam....so I think polk did that... There is the polo-fill down on the bottom of both sets
  • In my 7B's the polyester fill was rolled or fan folded over itself and stuffed up behind the midbass driver and the tweeter. No glue whatsoever. Don't know about the 4's. Egg crate?? Was that something that Polk used or a previous owner put in there?

    And thank you for the help!
  • F1nutF1nut Posts: 45,432
    edited August 2020
    Polk used glued in place acoustic foam in the Monitor 11 under one mid-driver to reduce the bass frequencies from getting to the PR.

    So, I missed that your speakers are the considerably smaller Monitor 4, which I am not familiar with at all. I have to wonder why they would have used acoustic foam along with poly fill in the 4. Anyway, I wonder if it was placed above the mid-driver.

    Here's the only interior pic I found, which shows only poly fill and only up high.

    ly1l35b2mvtl.jpg
    Post edited by F1nut on
    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 t-u-r-d by the clean end."


    President of Club Polk

  • F1nut wrote: »
    Polk used glued in place acoustic foam in the Monitor 11 under one mid-driver to reduce the bass frequencies from getting to the PR.

    So, I missed that your speakers are the considerably smaller Monitor 4, which I am not familiar with at all. I have to wonder why they would have used acoustic foam along with poly fill in the 4. Anyway, I wonder if it was placed above the mid-driver.

    Here's the only interior pic I found, which shows only poly fill and only up high.

    ly1l35b2mvtl.jpg

    Thanks so much for the picture...
    I will insert the polyfil as it looks in your picture in one speaker and some new foam in the back of the other and compair the sound of each....
  • F1nut wrote: »
    Polk used glued in place acoustic foam in the Monitor 11 under one mid-driver to reduce the bass frequencies from getting to the PR.

    So, I missed that your speakers are the considerably smaller Monitor 4, which I am not familiar with at all. I have to wonder why they would have used acoustic foam along with poly fill in the 4. Anyway, I wonder if it was placed above the mid-driver.

    Here's the only interior pic I found, which shows only poly fill and only up high.

    Is the photo of that cabinet a monitor 4 from the late '80s? Mine have the peerless tweeters with the hole in it...
  • FaustinFaustin Posts: 1,001
    I had a pair of early Polk 4's with the Peerless tweeters several years ago. Mine just had piece of egg crate foam wedged behind the 6 1/2 drivers. It was falling apart. I ended up using some polyfill in each speaker and left out the foam.
  • wispolkboywispolkboy Posts: 61
    edited August 2020
    Thanks everyone
  • dromundsdromunds Posts: 9,095
    Wispolkboy, where you located?
  • dromunds wrote: »
    Wispolkboy, where you located?

    I am in oak Creek WI
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