Moderators: Aaronw, kendale, John Sayers
Glenn,gullfo wrote:for the space between the baffles, i tend toward solid over soft. it's a good spot for slots to add diffusion.
mmm.....ok...I haven't done ANY calculations whatsoever, except on the angle of the slat wall. I just downloaded John's "components.skp" file and read his Recording Manual. From that I had the impression that the 100mm, 50mm, 25mm slats width, and 2,5mm, 5mm and 10mm slots gap was sort of a "universal set" for broadband slat walls. The only doubt I had was about the sequence or order of the slats and slots.gullfo wrote:on the slats, 20mm-40mm thick should be fine depending on your calculations. width and spacing, lot's of time randomly arranged and spaced to break things up visually as well as possibly increasing the diffusion aspects.
Ok, so the insulation can be glued on the wall side then. Coolgullfo wrote:no plastic for the slats. just some loose cloth behind the slats. leave air space from the slats to the insulation. you can lightly fill the cavity with pink insulation.
Sorry for being unclear...by central slat, I mean the slat wall you suggested I build between the soffits. This wall is not angled, so the cavity will have the same depth all along its width. As I'm going to build the frame that will support it, I wanted to know if 26cm deep is ok...gullfo wrote:not sure what you mean by the central slat. if you mean the total depth of the cavity being 26cm at a given point, if that is the depth required it should be fine.
mmm, let me see if I get this right:gullfo wrote:on the modes, let's assume a rectangular room, the positions of the nodes/anti-nodes will likely be consistently located. 1/2, 1/3, 1/4, 1/6, 1/8 of your room dimension on each plane (ceiling, wall, floor). in your calculator you see a dimension and frequency based on mode (1st, 2nd, 3rd...). the first 3 modes on each plane should be targeted first using broadband treatments.
Ok, I'll breathe and stop over worrying, I promisegullfo wrote:--- breathe ---
Well actually, it all began with the inside-out wall for me:) Then, for a number of reasons (long boring story) I decided to use metal frame to sustain the inner leaf, so I got stuck with building a standard wall instead. Nevertheless my idea was to follow John's idea and began planning my soundproofing under Stuart's guidance, coming up with this:gullfo wrote:the picture you show is John's inside-out wall design (which I think you are not doing?)
Anyway, the thing is that I'm still stuck with deciding width and spacing of the slat walls, and what sequence....any ideas on how I can determine that?Soundman2020 wrote:Probably not a good idea! You might end up duplicating or triplicating your coverage of certain ranges, and totally missing others.... Far better to just go with John's standard slot wall, since he has already done all the math for you, and oodles of those walls have already been built, very successfully. You might get luck with a random arrangement.. but then again, you might not. And your chances or randomly hitting on a BETTER design than John's, are about the same as your chances of winning all fifty State lotteries on the same day, then getting struck by lightning, shot, drowned and suffocated all at once, by accident!Euphioq wrote: just trying to make the slats somewhat random and aesthetically appealing.
- Stuart -
Would you use 20kg/m3 Fibreglass or 40kg/m3 Mineral wool (or none of these)?