Marc's Patio & Garage Studio: Slot or Drywall Splayed wa

This is a continuation from the topic and conversation of Tom's thread: Help me make a final decision... angled walls or extra space BUT geared towards my room options. 1st I'm just trying to figure out to splay my side walls via varied depth broad band slot resonator walls OR just angle my dyrwall walls. :D Room will be under 1000 cubic feet. Andre, 1st thanks for responding with me on this subject.

You did not mention it, but to make it explicit, with a room that size, diffusion is not appropriate.

Thanks :D :D I may have read a statement like that before, but I did not retain it :oops: That gives one less reason to use slot resonator side walls :roll: OK hears some details: Existing house layout: This stamped drawing from architect that will get submitted for building permit: Porch = Patio My drawing's top is north, architect top is west. The architect is only showing my "outer" walls. Basically I am dividing my patio in 1/2, ripping down the wall between patio & garage and then using part of the garage & patio for my one room studio. The width of room in the middle is limited by the width of the wall I am tearing down. The only walls which are not limited is the one that divides the patio and the north one in the garage (the one without door in architect drawing). Here are some quick pics to describe what I could do with this space (I think) Yellow = outer wall, Silver = inner wall 1. Splay the walls, drywall finish, then add DIY panel absorbers to all corners (plus a cloud), test and fix acoustics (hopefully) once built. I will be pushing the north wall in the garage more north than in architect drawing, and I probably will push out the south wall in patio for more air in the MAM isolation. 2. Splay the walls via tilting the room, north garage wall pushed some more and the rest would be the same as #1. 3. Splay the walls with slot resonator and tilt the room. Slot resonator on north side wall would (could be) 1' 6" at deepest and varying all the way down to zero over 9' 4" Slot resonator on south wall would be funky, built into wall and more like Johns DIY Wall Units except since the wall is already splayed I would place something inside the resonator area to vary the depth. I do realize this is going away from a proven method, but I would think the principle would be the same. Regardless it'll be way smaller then the one on the opposite north wall and it'll have a door next to it. Question would be will this ruin acoustic symetry of room? My guess is yes. Also shown is my hallway idea to get the garage/studio door on a side wall so that I'd have more room for a couch, bass traps and/or corner traps in back of room. I decided to stop with the drawings after #3. Another option would be like #1, not tilting the entire room, buiding parrellel walls and adding varying depth slot resonator to each side wall for splay. BUT in doing that the door in the south wall gets in the way same as in #3. Adding the hallway as shown in #3 for side wall door to garage would benefit acoustics I can place in rear of room, plus I'll be able to put a bigger couch if desired. But this takes away valuable storage space in the garage... this is why the outer wall door to garage is on the west wall. I'm really leaning on NOT soffit mounting my speakers which are Event TR8's. If I'm convinced other wise it should not be a big change to the "best" overall room shape. Also I've considered using a rear door angle @ 24 degrees which I copied off John. This drawing was done when I was still considering using some inside out walls for slot resonators (I'm not now). Slots are not shown in this one. Note I do understand the triple leaf effect from a slot resonator, but since I'd have one against a concrete wall (block filled with sand) and the other still on an exterior wall, I could live with it. Only wall I'm overconcerned about isolation is wall between family room and studio. Hmm, now that I've gone through the exercise of drawing all this I'm thinking I might hear a suggestion to tilt the room like in #2, use the side walll door with hallway AND forget about the slots. :twisted: Marc 219 days till my studio due date.

wow, crazy timing for me to stumble on this. i'm have a similar sized room 23' X11' X 8' i AM planning on building it rectangular, then using slot resonators to 'splay' the walls as in my design here http://johnlsayers.com/phpBB2/viewtopic.php?t=7411 i'm not soffit mounting my speakers anymore, so there will only be 1 angle on the mixing position east/west walls. I AM FRAMING MY WALLS NOW!!! if it is better to build the walls and drywall with the desired angle, please LET ME KNOW NOW!! i agree with marc that slat resonators look sweet! but i want to do what's best. i'm eagerly waiting replies to both of Marcs posts on this. Marc, maybe you can talk me out of the resonators? how come you decided against it? thanks, Mike [/url]

Since you're talking about angled slots, this will lessen the narrow band response typical of a RESONATOR type trap - that's a GOOD thing, because I haven't seen any sign that you've actually CALCULATED what the reverb time of this room will be in each frequency band - if you actually want to know what the room will sound like, this needs to be done BEFORE you build. The very top link in this forum has a new version of the reverb calculator - go there and calculate your estimated RT at each frequency the calculator offers, chart them, and look for CONSISTENT 'verb times somewhere around 0.3 seconds. Frequencies with longer times need more absorbent that works in that range. http://www.bobgolds.com/AbsorptionCoefficients.htm will give you the absorption figures for nearly every choice you might have in materials. If you calculate your room and still want to do slats as in your sketch, I'd just make sure that each cavity is completely filled with insulation - this will widen the resonance curve and lessen any peaky response that the slats might otherwise cause - but I would still use the AVERAGE depth of each resonator to find the approximate center frequency, and try not to use as much absorbent that works only in that range (thickness can be your friend here) HTH... Steve

in their respect order (125Hz, 250, 500, 1000, 2000, 4000) just drywall, no treatment ; as-is .37 .91 1.33 1.69 2.06 1.96 i'm still unsure as to how to use this. ie: the angle/depth of my splays/ slots here is exactly what i need to find out: 1. should the 'front' walls be angled broadband slot resonators or just splayed walls? a big concern is access to the electric box/ symmetry - as i can't fill the cavity fully with insulation, and i can't get an airtight seal with the gypsum and circuit breaker 2. what angle/depth should the 'front' walls be? 3. after looking at my original layout here, http://johnlsayers.com/phpBB2/viewtopic.php?t=7411 (my concerns are the yellow area-without the soffit mounts, just a straight angle) A. what is the best thing to do with these side walls on each side of the drums? keeping in mind this is a combo room, mixing/tracking; B. should i put broadband slot resonators like this on each side? or leave the walls parallel and treat them somehow?

Mike, rather than hijack Marc's thread it's better if you start your own - just keeps things easier to follow. If you would, please start a new thread with an appropriate title, then copy/paste your two posts above into that thread - when I see the new thread, I'll delete the posts here and we can continue the discussion - thanks... Steve