Soffit wall/monitor mounting

Discussion in 'Studio Construction & Acoustics Forum' started by MadMax, Feb 5, 2006.

  1. MadMax

    MadMax

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    Thinking about these options...

    1. Solid concrete piling: 24"x24"x??? I'd sink it 12" into the ground on a 30"x30"x18" thick footer. Definitely the most difficult method. I'll have to be damn sure where they go. Once in, there ain't no fixing it.

    2. A similar all wood construction to Paul Woodlock.

    3. (this is a bit trying to describe) 2 "box" pilings of comprised of 4) 3"x24"x??? high, rebar reinforced concrete slabs. Fill the resulting box with sand. Cap it with a 1" thick concrete slab. Topped with a high durometer neoprene sheet.

    In method 3, I'll have to make the foundation slab at least 8" thick under the soffit wall. Since this is a one time shot, I am considering just making the entire control room pad 8-10" thick. It adds significantly to the cost of the room/studio, but it might be worth it.

    Comments?

    Max
  2. Rod Gervais

    Rod Gervais Moderator

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    Max,

    Follow Pauls lead on this - you do not want to couple your speakers with the slab via concrete supports.

    Rod
  3. MadMax

    MadMax

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    Thanx for the reply Rod!

    Paul had mentioned that he felt that the more mass in the speaker/soffit support, the better... BOING!!!! Off into left field I go!

    I take it that there isn't any coherent way to realisticly decouple the "concrete box" from the floor then?

    I can live with that.

    Hitting the marks exactly for a footer and piling kinda' scares the hell out of me. Although it would indeed be A LOT of mass... It would be completely decoupled from the floor as the footer would be 2-4 inches below the floor pad and with 1" expansion material surrounding the piling the floor would be poured around the piling. TRICKY AT BEST! Disaster at the worst.

    I'm starting to understand one of Paul's diary entries about when one is going through the design/build details... it can be tricky not to go a bit "over the top" in attempting to get that little extra bit of umpf to make your room(s) as good as possible.

    My appologies for some of the probably more stupid than usual comments and questions.

    Max
  4. Yes of course there is! :) I did it.

    Make it easy, just do similar to what I have done. It works! besides I lost a lot of brain cells workigng all that out. I'd be happy for others to benefit :)

    I read these beforehand.....


    http://www.genelec.com/support/flushmount.php

    http://www.genelec.com/support/faq/faq20.php

    http://www.genelec.com/support/faq/faq19.php
  5. MadMax

    MadMax

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    So much good work there Paul... Imitation and all... I'm not opposed to copying your work, but like you... just trying to explore what's the absolute best way to do my wall and soffits.

    I read the Genelec stuff... and read it, and then re-read it. You kindly posted it again, and I re-read it again still. The "best" material they recommend is concrete, then brick, then multi-layer gypsum.

    I've been playin' with quite a bit of stone, rock, brick, block, concrete and mortar around here for better part of three years (pix soon!) and could probably make the soffit wall out of anything I choose. Looking at the mass equation, the Genelec docs, forum postings and most recently, Philip Newell's book, I just gotta ask myself if I can afford not to do what I can to get the greatest mass beneath the monitors and in the wall.

    Max
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