Mortite for ported speaker?

iskandam
iskandam Posts: 704
edited January 2010 in DIY, Mods & Tweaks
Will using mortite to seal drivers in a ported design be as beneficial as sealed speakers?
Post edited by iskandam on
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  • Conradicles
    Conradicles Posts: 6,092
    edited January 2010
    No. Think about it for a little bit.
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  • iskandam
    iskandam Posts: 704
    edited January 2010
    That's what prompted the question in the first place :D
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  • dorokusai
    dorokusai Posts: 25,577
    edited January 2010
    I don't think it's a bad idea to firmly seal your drivers and allow the port and loudspeaker to work at peak efficiency. It's also not expensive, so a no-brainer for me. Vintage speakers are usually not examples of tight tolerances and aerospace level engineering.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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  • Paden501
    Paden501 Posts: 286
    edited January 2010
    It should help. Logic says that a tight seal would mean less air escaping around the drivers and more air flowing through the port, which is good because the port is designed for a certain frequency based on its length and volume... air leakage around the driver is not.
    ~Matt
    My System

    Front L/R: Definitive BP10Bs
    Surrounds -Polk Audio Monitor 4As
    Preamp: B&K Reference 20
    CD: Jolida JD100a
    L/R Amp: Carver TFM-24
    Turntable: Pioneer PL-516 W/ Shure M97xe
    TV: Sony 52" XBR9
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  • zingo
    zingo Posts: 11,258
    edited January 2010
    Paden501 wrote: »
    It should help. Logic says that a tight seal would mean less air escaping around the drivers and more air flowing through the port, which is good because the port is designed for a certain frequency based on its length and volume... air leakage around the driver is not.

    Bingo. But as correctly stated before, it will not make as much of a difference as a sealed design speaker.

    What speaker are you wanting to Mortite?
    Jake
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  • ben62670
    ben62670 Posts: 15,969
    edited January 2010
    The Mortite does more than just seal your speakers. The basket is tied to the cabinet better and prevents any ringing.
    Ben
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben
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  • iskandam
    iskandam Posts: 704
    edited January 2010
    zingo wrote: »
    Bingo. But as correctly stated before, it will not make as much of a difference as a sealed design speaker.

    What speaker are you wanting to Mortite?
    Built from scratch. My first DIY project. The alternative is this
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  • iskandam
    iskandam Posts: 704
    edited January 2010
    This is something that you use on all the drivers, not just the woofers, right?

    I will be flushmounting all of them on the front baffle. Do I need to make the countersink holes a bit deeper or will the mortite compress down to nothing?
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  • zingo
    zingo Posts: 11,258
    edited January 2010
    Correct. You should be sealing anything that screws onto the cabinet: woofers, tweeters, binding post cups.
    Jake
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  • dorokusai
    dorokusai Posts: 25,577
    edited January 2010
    iskandam wrote: »
    I will be flushmounting all of them on the front baffle. Do I need to make the countersink holes a bit deeper or will the mortite compress down to nothing?

    You don't have to caulk it up like a bathroom and there's no need for cabinet modification.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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  • kcoc321
    kcoc321 Posts: 1,788
    edited January 2010
    I use my finger to flatten it out as much as possible, and then tighten the screws like you do when tightening down a tire, alternating across, maintaining the same degree of tightening on all the screws. Someone else said to come back in a few days and check them again, but mine did not require any additional tightening.
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  • iskandam
    iskandam Posts: 704
    edited January 2010
    excellent, thanks for all the helpful information!
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