Wich corner abosrber ?

Started by orangenumerik on 15 March 2007. 6 replies.

Originally posted at johnlsayers.com, topic 8412.

Hi All Just a quick question. What would be the best bass traps option for the corners behind some free standing monitors (no soffit). The corners in questions are irregular in shapes (no 90deg. angles) and are 2 feet deep at the most. Slats resonator was my first choice since HF is non-existent at that location so there won't be any reflection probelms. Being in a corner they would have a broader effective range, and they looked great. Or Super chunk was the other option, but being more broadband in nature i' m not sure it would be the best option at that location. Or A simple corner absorber across the corner ? Any comments welcome.
maybe you can do it in stages - try the across the corner absorber first - if it gives you the desired result - you're done. if you find you need more absorption - stack the corner frame with enough insulation to make it a superchunks. then again maybe the resonator will be good from a function and form pov and you won't have to pull out the superchunks to reclaim some air space, but it would require more work. you could use a 19 mm (3/4") plywood or 25mm (1") MDF routed with the slats needed. stain as needed.
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try the across the corner absorber first
This is exacly what i was planning to do instead of going direcly for the slats, but would it be a better choice absorbtion wise ?.
you could use a 19 mm (3/4") plywood or 25mm (1") MDF routed with the slats needed
Routed slats... what a great idea, i didn't though of that.
maybe the resonator will be good from a function and form pov
i'm not sure i understand this, can you clarify, thanks. Thanks for your input gulfo it's always appreciated. :)
I wouldn't assume that there is no HF in the corners behind your monitors....what about bounce off the rear wall, and then again off the front wall? What's the length of the room in question? If the net acoustic distance (i.e. round trip length from your monitors to the rear wall and back to the front wall and then to the mix position) is greater than say 30 feet you're probably ok with a hard faced trap. Otherwise, go for a soft faced trap. My experience in small rooms has been that imaging is greatly improved by doing broadband (i.e. thick) treatments on the front wall. Cheers, Kris
Good points. You are right about small sized rooms HF bounce.And that would be specialy true if the room have parallel walls (rectangular rooms) But in my case there is no parrallel walls and since my rear walls are more or less 14 ft from my listening position they will have HF absorber all the way. I design this room so most reflection are going away from the mix position. But still you invoke a good point. Thanks.
If it were my room, I would probably start with superchunks in all corners, assuming you have a good RFZ. Once that was done, I'd see where the room still needed help, and design slat resonators around those specific frequencies.
the form and function pov (point of view) - function meaning design and building the resonator to address the trapping and any problem frequencies - and form = how it looks.... ;-) if you find too much HF bounce off the resonator you can cover a portion of it with some cloth or cloth wrapped cotton batting (thin).