it was only about 10 minutes... it just looks like it took a long time :wink:Wow, I didn't expect anyone to spend that much time on drawing for me.
cool looking absorbers and diffusors
Originally posted at johnlsayers.com, topic 9706.
Hello again Glenn. Ok, so you think shallower(higher frequency span) with bass trapping behind will work better? Ok, I'll buy that. :D How bout the superchunks in the corner of the closet behind the diffusers, or dd you think the "hangers" will work better? And you also mentioned a Poly, right? How bout a Poly QRD? I thought I saw one of your drawings that was a Poly QRD too? Any insight into the practicallity of this idea?
How bout a CONE shaped poly with well dividers?:lol:
Here is an elevation.of such an animal.
fitZ
btw, I CAN build such an animal. Its fairly easy with ribs and benderboard. Its the practical side of whether its worth building or not that I would like to know.
the polycone looks interesting... not sure what it will do... the polyQRD was something i was goofing around with and i have no idea if it would be effective or not. it you feel like building one and testing it... :)
the bass trap should have a layer of 4" 3pcf rigid insulation behind the cloth, the closet should be lined with 4" 3pcf rigid insulation about 4"-8" off the walls, ceiling, and floor, and if you have space, a line of hangers consisting of 1/2" or 3/4" Homasote or other soft fiberboard wrapped with soft insulation. you can use chain or low stretch rope. if the hangers are about 6' long you should be able to get pretty decent level of trapping.
Hello again Glenn. Man, your skill with Sketchup is astounding. Sure wish I had some tips. :D Nice sketches. Ok, well, this rear wall thing is still a thorn in my rear as well. Wish I had an absolute solution. Seems like everbody has a different opinion. Sometimes I feel like it doesn't make a damn bit of difference what I do there. I just may go ahead and build the Polycone with some superchunks behind it and be done with it. Even measuring the room doesn't seem to be an answer(according to some people at Studiotits) as the interpretation of the data can leave a lot to be desired. :roll:
Anyway, thanks again for your opinion, time and skills. Believe me, it IS appreciated mucho.
fitZ
thanks... i've been working CAD since around 1980... as far as the room, its like football - stick with the fundementals - get good bass trapping and make sure the reflections off the back walls are reduce enough (but not dead) so you get proper imaging and so on. start with the super chunks in the corners and use some of that space for storage, put up a cloth cover with some widely spaced slats and diffuser of your choice - polycone or small skylines. see how it works for you. if you find you need more mass trapping, maybe you'll need some panel traps as well once you measure the room and see where the problem frequencies are...
A rather sweeping generalization without a supporting references. Without knowing what exactly you are refering to, I am guessing that advice you received was something like "measurements are needed after the designed installation to see how the various materials work together, so that room can then fine tuned." A wonderful research paper regaring this is BBC RD 1991-07. Figure 7 shows how the high frequency reverb time INCREASED with ADDED ABSORPTION in the room! Absorbingly: AndreEven measuring the room doesn't seem to be an answer(according to some people at Studiotits) as the interpretation of the data can leave a lot to be desired. :roll:
Not really. I DID read on studiotits that for people who are NOT acousticians :roll: measuring a room and then trying to interpret it may lead to conclusions that don't mean a damn thing. So who are you trying to kid?A rather sweeping generalization without a supporting references
then there's the timeless debate: instrumented measurement vs. ears... :-)
Thanks for your reply. It is different from what you wrote previously and I quoted:Not really. I DID read on studiotits that for people who are NOT acousticians :roll: measuring a room and then trying to interpret it may lead to conclusions that don't mean a damn thing. So who are you trying to kid?A rather sweeping generalization without a supporting references
So the advice you received from the other place is closer to "You have to know what you are doing when interpreting results." Clarifying: AndreEven measuring the room doesn't seem to be an answer(according to some people at Studiotits) as the interpretation of the data can leave a lot to be desired.