Monitor 4 eggcrate/batting placement

wispolkboy
wispolkboy Posts: 150
in Vintage Speakers
I went to epoxy my drivers and the eggcrate was disintegrated... So exactly where should I place the new eggcrate foam and batting?
M7's 1982 Peerless tweeters
M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
M4's X2 both with Peerless tweeters
M5Jr with SL1500 (in the garage, they sound great)
M4.6 series2 X2 with upgraded tweeters
SDA 2 with upgraded tweeters
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Best Answer

  • wispolkboy
    wispolkboy Posts: 150
    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....
    M7's 1982 Peerless tweeters
    M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
    M4's X2 both with Peerless tweeters
    M5Jr with SL1500 (in the garage, they sound great)
    M4.6 series2 X2 with upgraded tweeters
    SDA 2 with upgraded tweeters
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Answers

  • F1nut
    F1nut Posts: 50,542
    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

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  • wispolkboy
    wispolkboy Posts: 150
    Thanks for your reply! I only see glue where the cabinet was glued...
    M7's 1982 Peerless tweeters
    M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
    M4's X2 both with Peerless tweeters
    M5Jr with SL1500 (in the garage, they sound great)
    M4.6 series2 X2 with upgraded tweeters
    SDA 2 with upgraded tweeters
    · Share on FacebookShare on Twitter
  • wispolkboy
    wispolkboy Posts: 150
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    1nkl9de3213v.jpg
    M7's 1982 Peerless tweeters
    M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
    M4's X2 both with Peerless tweeters
    M5Jr with SL1500 (in the garage, they sound great)
    M4.6 series2 X2 with upgraded tweeters
    SDA 2 with upgraded tweeters
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  • Gardenstater
    Gardenstater Posts: 4,459
    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, std. mods+ (1979, orig owner)
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  • wispolkboy
    wispolkboy Posts: 150
    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
    M7's 1982 Peerless tweeters
    M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
    M4's X2 both with Peerless tweeters
    M5Jr with SL1500 (in the garage, they sound great)
    M4.6 series2 X2 with upgraded tweeters
    SDA 2 with upgraded tweeters
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  • wispolkboy
    wispolkboy Posts: 150
    Gardenstater wrote: »
    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!
    M7's 1982 Peerless tweeters
    M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
    M4's X2 both with Peerless tweeters
    M5Jr with SL1500 (in the garage, they sound great)
    M4.6 series2 X2 with upgraded tweeters
    SDA 2 with upgraded tweeters
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  • F1nut
    F1nut Posts: 50,542
    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

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  • wispolkboy
    wispolkboy Posts: 150
    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....
    M7's 1982 Peerless tweeters
    M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
    M4's X2 both with Peerless tweeters
    M5Jr with SL1500 (in the garage, they sound great)
    M4.6 series2 X2 with upgraded tweeters
    SDA 2 with upgraded tweeters
    · Share on FacebookShare on Twitter
  • wispolkboy
    wispolkboy Posts: 150
    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...
    M7's 1982 Peerless tweeters
    M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
    M4's X2 both with Peerless tweeters
    M5Jr with SL1500 (in the garage, they sound great)
    M4.6 series2 X2 with upgraded tweeters
    SDA 2 with upgraded tweeters
    · Share on FacebookShare on Twitter
  • Faustin
    Faustin Posts: 1,149
    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.
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  • wispolkboy
    wispolkboy Posts: 150
    edited August 2020
    Thanks everyone
    M7's 1982 Peerless tweeters
    M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
    M4's X2 both with Peerless tweeters
    M5Jr with SL1500 (in the garage, they sound great)
    M4.6 series2 X2 with upgraded tweeters
    SDA 2 with upgraded tweeters
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  • dromunds
    dromunds Posts: 10,009
    Wispolkboy, where you located?
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  • wispolkboy
    wispolkboy Posts: 150
    dromunds wrote: »
    Wispolkboy, where you located?

    I am in oak Creek WI
    M7's 1982 Peerless tweeters
    M5's X2 (1981 Peerless tweeters, 1988 with upgraded tweeters)
    M4's X2 both with Peerless tweeters
    M5Jr with SL1500 (in the garage, they sound great)
    M4.6 series2 X2 with upgraded tweeters
    SDA 2 with upgraded tweeters
    · Share on FacebookShare on Twitter