MM120 - enclosure?

Soenke Posts: 3
edited September 2002 in Car Subwoofer Talk
Hi from Germany to all of you..

I just bought the PolkMomo MM 120-sub. Right now I'm wondering what enclosure sounds best. Sealed or ported? I read the instructions on the polksite, but I am not quite satisfied yet.

Has anyone a link where it's written down how to build an enclosure step by step? It's the first time for me trying to set up an enclosure, so help is more than needed

Over here in Germany I've seen enclosures already build up especially for the MM 120. Can you recommend them?

For every kind of help I am thankful,

Post edited by Soenke on


  • Thom
    Thom Posts: 723
    edited July 2002
    We recommend a sealed enclosure of .88 cu. ft. for the MM120 woofer. I don't know what that equals in liters but if you can find a sealed box with the proper airspace you'll be fine. As far as building a box- if you've never done it before it's probably not worth it. Here in the US pre- fab MDF enclosures have gotten so cheap it doesn't make sense to make one yourself unless you want a shape or size that's not available. Sorry for the late reply...
  • PoweredByDodge
    PoweredByDodge Posts: 4,183
    edited September 2002
    k... lets do some math...

    0.88 cubic feet... ... you get this from INTERNAL BOX DIMENSIONS!!! not external.. we want internal air space.

    so 0.88 cubes is for example 1 foot high X 1 foot wide X 0.88 feet deep...

    so that's 0.3048 meters X 0.3048 meters X 0.268224 meters
    gives us an internal box volume of 0.0249 cubic Meters for a 12 inch subwoofer.

    similar math can be figured for a 10 inch sub. (0.66 cubic feet)

    material to build a box -- 3/4 inch to 1 inch thick Medium Density Fiberboard (for the beginner) or if you're a real nut and wanna try something different... use Birch Plywood... but be prepared for a slightly different sound.
    "With your own attitude it is hard to survive here... But who gives a damn, we are here to change the world, and we dont need a password for that."
    - Anurag
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