In-floor sub: crawl space moister and register issues

Discussion in 'Home Theater Projects' started by Craig Treusdell, Dec 22, 2003.

  1. Craig Treusdell

    Oct 4, 2002
    Likes Received:
    After buying new furniture and rotating my room 90 degrees, I no longer have the space for a large sub.

    I currently have 2 Tumults and 2 PRs. I will order 2 more PRs to finish the second sub if I can find a place for them.

    I have two options:
    1. The chair-and-a-half sits in the corner with enough space to get a wedge of either a 5 ft^3 sealed box with 2 Tumults or a 5.5 ft^3 box with 1 Tumult and 2 PRs. I can drape a black sheet over the top of an unfinished mdf box and it is done (but I want to use 2 Tumults with PRs).

    2. The crawl space varies between 4 and 7 feet, plenty of space to get a sub in. But there is a lot of moister. I normally use mdf but can use whatever. Is a water-sealer enough? I have thought about fiber-glassing an mdf box, but it's too cold to glass at this time. The other problem is register size/type. I don't want anything to rattle and I want to be able to take the sub out and seal a board under the vent when I move. I would like to use 2 Tumults and 4 18" PRs, but that requires a large opening or a very deep box. What is the smallest opening I could use to minimize noise, or would this be an issue? And what type of vent? Would a simple air return work?

    Any other issues I should be aware of? With 2 Tumults and only 750 watts per sub I really don't want to go sealed+LT, since this means either building a circuit or buying an eq, along with a little more power.

  2. ThomasW

    ThomasW Cinematographer

    Nov 6, 1999
    Likes Received:
    Throw away the PR's and build an IB manifold, mount the drivers in it. Buy a Behringer DSP1124P parametric EQ. All subs need one of these

    See "Cult" link in my signature for more info and pictures

Share This Page