Any comments on my studio design?

Discussion in 'Mixing & Song Critique' started by Faeflora, Jan 16, 2002.

  1. Faeflora

    Faeflora Member

    Mar 14, 2001
    Hey everyone. I'm about to put up the acoustical treatments in my studio and wanted to get your opinions on my design.

    The room is in a garage. The walls are made from cinder block. The floor is dense concrete. The ceiling is plaster with a wood frame behind it. The ceiling is 7'6" tall at the front and 7'10" in the back. The floor slopes from front to rear (by the garage door). Floor is carpeted with cheapass industrial carpet with thin dense padding. The garage door has weatherstripping all around it and so does the normal door. I hung heavy blankets over the garage door.

    Lemme tell you what the absorbers and traps are made out of:

    Bass trap- 7' tall x 4'wide x3" deep boxes framed with 1x2's. Outer face is 1/4" plywood. Inner side is 1/8" particle board. Box is sealed with caulk. Box is partially filled with spray foam (Dupont "Triple Expanding Great Stuff") to damp the resonations. I mounted the boxes on wood 1x2's which I attached to the wall with a nailgun.

    Ceiling Mounted absorbers- 8' tall x 4' wide x 4" deep boxes framed with 1x2's. Side facing the ceiling has 1/8" particle board attached to it to increase raise STC rating. I glued 8" thick fibreglass insulation to the inner side and covered it with polyester batting and burlap. The absorbers are mounted to the ceiling directly with screws.

    Wall mounted absorbers- various sizes. Framed with 1"x2"s with 1/4" plywood backing to increase STC rating. Facing side is 8" insulation again, with the polyester batting and burlap.

    Gobos- Just like wall absorbers but 2 4'x6'5" boxes and connected with hinges.

    I bought Markertek 3" thick "Markerfoam". It comes in 54"x54" sheets! 2 in one box for $30!

    So... :) Am I missing anything? Any major ^#$% ups? I'm about 50% done right now.

    By the way, I ran my room through a room mode calculator and there was major build up in all the modes from 20-300hz. That's why there's so many bass traps and broad range absorbers.

    Here is a direct link to a page which has the image embedded.


    Also, sorry if the image looks kind of low budget. It is. I made it with Windows Paint. :p :p :p

    Thanks everyone!
  2. Ang1970

    Ang1970 Well-Known Member

    Sep 5, 2000
    Looks pretty good, tho hard to say without actually seeing and hearing the room in person.
    Only thing I'd ask about from your "rendering" is how much noise does that A/C make? And in a related story, how reflective is that door exactly parallel with it?
  3. Faeflora

    Faeflora Member

    Mar 14, 2001
    I will put sound foam on the door. I've also glued a layer of plywood and drywall onto the door to increase the STC. The door is weatherstripped.

    I'm only gonna run the A/C when I'm not recording.

    Thanks to that handy room A/C thread, I might be purchasing one of those silent Mitsubishi A/Cs.

    Is the room too boxy in the front?
  4. Bear's Gone Fission

    Bear's Gone Fission Active Member

    Jan 4, 2001
    49 dB quiet, which is supposed to be about the level of ambient noise in an office. Quiet enough when you're recording amps or drums, but maybe not vocals or acoustic instruments. I like the look of the Mitsubishi for convenience, but you might have to be clever about acoustic isolation.

  5. phalynx

    phalynx Guest

    "Thanks to the handy A/C thread"

    hehe,, I was just thinking the same thing about this one, I was wondering what to do about bass traps...


    I am building a similar garage studio too.

    I would like some input too.
  6. anonymous

    anonymous Guests

    Feb 10, 2001
    Just make sure not EVERY surface has absorbant material on it! Dont want to suck ALL the life outa the place!

  7. I've found a concrete floor with thin carpeting is murder on drums sound. I much prefer a wood floor. Also useful when you want to reinforce the low mids on an instrument or amp, you angle the mic to get a bit of bounce from the floor. If budget precludes building a wood floor (which is easy to deaden with some cool and vibey indian rugs when you need it dead), I would seriously think about building a large, really dense riser with varnished wood covering. It doesn't need to be that deep actually.

    Just my 2 Canadian cents, for what it's worth right now...

  8. Hey, I did not get that you were talking about your control room. Stupid me! I guess the cold numbs our brains here in the Great White North...

    Anyway, I still like some wood flooring in the control room. An 8'x8' section in the middle where the rolling chairs go is nice, and if your ceiling is angled/treated and your speakers are not too high and angled towards the floor, should not cause unwanted reflections at the mix position. You might also consider the fact that concrete is not very conducive to low frequencies traveling thru it. Which is a good and a bad thing. I like having a little bit of resonance in the floor so you don't have to pump an excessive amount of low frequencies in the room from your speakers/sub system. With a little bit of low end vibrations under your feet, the brain synthesize/reinforce the perception of bass. If done right, I've found I can get away without using a sub with speakers that have good bass extension. (I use BM15A's.)

    Hope that helps!

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