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  1. gullfo

    Portable vocal booth

    my fault - bad example in the drawing but simple enough when constructing - cut the base plates to join on the angle and overlap if double plate on top. place studs on 90 degrees to plates and fill gap with a ripped down blocking.
  2. gullfo

    Portable vocal booth

    angles are based on measurements. just lay down some painter tape to align the framing. remove the tape prior to adding drywall. I do have a PDF file of this in D size but its too big to post here due to the 64Kb limit on files... here's a vox booth plan I posted on John's web site...
  3. gullfo

    Portable vocal booth

    i've drawn up a simple booth suitable for drums or vox, if it helps.
  4. gullfo

    Idea for isolation booth

    the floor and walls all have absorption qualities, the idea is to make sure they are the ones you want... the walls could suck the life out of the drums as well as a poorly made floor, which is why most good sounding drum booths are substantially solid and reflective with tall ceilings...
  5. gullfo

    Idea for isolation booth

    a single or light layer over carpet can result in the floor acting as a low frequency membrane absorber (carpet on undercarpet foam can become a very effective absorber) and consequently kill off some of the bass drum... using enough mass on it (several layers of MDF) to compress it (might be...
  6. gullfo

    Concrete or rockwool

    the insulation will not block anything. it might dampen the membrane it is closest to or in contact with. don't confuse insulation with isolation. the construction and materials of the ceiling will affect the sound quality of the room in which it exists. the upstairs floor material will not...
  7. gullfo

    Bag End E-Trap

    the WSDG paper showed them only using 2 in a small CR to manage a couple of frequencies that were problematic in the producer seat on the back wall - the rest of the CR was balanced by design for the mix position and at the last minute needed the change. the step-by-step adjustment process was...
  8. gullfo

    Concrete or rockwool

    is the tile or concrete facing down or up? this sounds like you're asking what is better for the floor above the room in question. if thats the case, neither one will contribute to sound isolation as impact noise transfer will be high. if this is the ceiling, then its highly reflective and...
  9. gullfo

    Bag End E-Trap

    as Ethan points out, its a point solution - you still need the room treatments for broadband control but if you need to deal with one particular frequency or two, and space or design considerations, the e-bag seems like a decent option if its cost effective...
  10. gullfo

    Need help w/ acoustic treatment layout please.

    overall treatment plan would remain the same. the main difference is that the mix position depends heavily on symmetry (acoustically) and the drum kit would likely fair better without symmetry (adds to scattering and reduces the chance of reinforcing modes etc impact the sound - in most cases...
  11. gullfo

    What treatment to little room ?

    these are just initial suggestions. you would want to make measurements to determine what other treatments are made but generally - bass trap the corners, put a drape across those cabinets, front wall (meaning the direction the mix desk is facing), side wall, and ceiling absorbers to reduce...
  12. gullfo

    Need help w/ acoustic treatment layout please.

    I would put the desk centered and facing the window and the drum kit by the door - add heavy drapes to pull over the window or door as needed for reflection control - probably not often as you don't want a dead room. you can also stagger the treatments to add some efficiency and create more...
  13. gullfo

    have you seen these bass traps before?

    you could use pegboard but it would be affecting the high frequencies with that number of holes. you would ordinarily drill in the required number of holes in 1/8"-1/4" plywood or seal the pegboard and push out a number of plugs - to get it to within a center frequency. the poly itself, esp...
  14. gullfo

    inset monitors

    there's a lot to consider - how much space are you willing to give up? the soffit mounting requires a number of dimensions to be correct to be effective for a given room, monitoring position, and monitors. you get a 6db boost by soffit mounting which will likely need compensation, plus you need...
  15. gullfo

    have you seen these bass traps before?

    you can also make them polycylindrical across the corners to add diffusion as well as broadband bass trapping.
  16. gullfo

    What the hell is wrong with my room?

    there are several forces at work: room modes which define the most likely problem frequencies based on room dimensions, resonances which result from the construction of the room, and standing waves resulting from trapping the energy in the room and the intestiry of which are affected by...
  17. gullfo

    What treatment to little room ?

    Bryan has a good idea - put the cabinets to your back. either way, i think you need to pull a drape over it because of the reflections and resonances and still the need to access it... maybe some absorbers on stands to trap in front of the cabinets could also do it.
  18. gullfo

    What treatment to little room ?

    i would run a heavy drape along that set of cabinets.
  19. gullfo

    Material to Cover Bass Traps???

    it might not reflect the bass, but as Bryan points out, if the covering is too dense it starts acting as a membrane absorber for bass which results in an unexpected frequency being affected. bass traps need low gas flow resistivity in the covering to be fully efficient (like slat resonators need...
  20. gullfo

    Room treatment or portable vocal booth ?

    i'd second the room treatment. the portable vox booth isn't going to help you with any live instruments or mixing. if you use that budget to buy some rigid fiberglass, cloth, fire retardent, and build yourself a dozen absorbers and place them across the corners (wall-ceiling and wall-floor are...
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