boggy

Hi Sebastian,
Yes, but not much and this is not a point. Point is bringing back slightly diffused reflections to the listener in the room.
Vibration is main problem with thin slats. I don't see the problem why we shall not use slats thicker than one inch

If I understand well your question:
I don't use dividers (fins) because they additionally complicate, already non simple design... hope I helps. If you find that I doesn't understand your question, please explain it more...
LF absorption of panels behind is already existing whatever we do with sealing box behind air transparent QRD diffuser. Forming sealed box with absorber material behind air transparent diffuser may drift absorption to the lower frequencies, but this is already dependent of particular situation and design, no easy answer here.
You're welcome!
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Hi boggy!, ive been looking those pics awsome work of myroom acoustics! Congrats!

im intrested in the mls used for slats over a broad band absorber...and the "finless gaped qrd" shown on the pdf that you posted.
I would like to ask some questions if Im allowed!

a) msl questions
1- if the panel is not air tight, would the slats affect the LF absorption to some degree?
why or why not?

2- slats thickness, is there a range to go with? ex. say less than 3mm is too thin, and more than an inch is too much?

b) qrd difusor absorber questions

3- the gap between wells in the qrd are fixed, and may them be calculated as if I were using dividers?

4- this qrd must be sealed in order to work in the LF range? as a kind of slotted panel? or LF absorption is achived by other method?


thankyou very much for your time and for sharing what you know =)

Yes.
Yes.
It is important but not much.
It is your choice... 3-5mm gap is ok.
You're welcome!

hello Boggy, sorry to bother you but I just read this post from you:
http://www.gearslutz.com/board/6890286-post6.html
I'm planning to make a couple of big panels 120x240 to put in my room and use something like that to reflect a little bit of High Frequencies..... I was going to use the 534435453534435 sequence I found on GS but your looks more interestin because, if I understood right I can use the same dimension for the slats...
I have few questions:
can I use any dimension for the slats? I mean if they are all 3 or 4 or 5 cm it's the same?
can I use your sequence starting randomly on the list?
I suppose the thickness of the slats it's not important, I'm I wrong?
the slats which are consecutive are touching each other?
thanks a lot and sorry to bother you.
ciao
Paolo

Hello! I will be very grateful if you could take the time to have a look at this thread and leave your thoughts.

http://www.gearslutz.com/board/studi...lease-vet.html