Acoustic Treatment Behind Open Baffle

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forky

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Acoustic Treatment Behind Open Baffle
« on: 29 Jul 2022, 03:24 am »
I have a new and untreated room. I have read in an older thread that diffusion is better behind OB but thought I would get some updated opinions - in case some prefer absorption or a hybrid or ?

I haven't set the speakers up yet but will likely be 4' from the front wall and 3' from the side wall. Issue is that much of the front wall are 3 huge sliding glass doors - which will have curtains but I'm thinking about putting something more substantial behind the speakers themselves (although they will likely be mostly in front of drywall but some curtains/glass).

aniwolfe

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Re: Acoustic Treatment Behind Open Baffle
« Reply #1 on: 29 Jul 2022, 05:15 pm »
I would recommend the ABB1 Mr. 'T' Hemispherical Radiation Diffusers by P I Audio > https://piaudiogroup.com/

Another tip for better sound, use a low back fabric or rattan (no shiny leather) listening chair or couch that does not block your ears from the back. I would recommend free clearance from the top of your shoulders up. Made a HUGE difference for me. The IKEA POANG Chairs are the worst.

Mr. Big

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Re: Acoustic Treatment Behind Open Baffle
« Reply #2 on: 30 Jul 2022, 02:49 pm »
I have a new and untreated room. I have read in an older thread that diffusion is better behind OB but thought I would get some updated opinions - in case some prefer absorption or a hybrid or ?

I haven't set the speakers up yet but will likely be 4' from the front wall and 3' from the side wall. The issue is that much of the front wall is 3 huge sliding glass doors - which will have curtains but I'm thinking about putting something more substantial behind the speakers themselves (although they will likely be mostly in front of drywall but some curtains/glass).

I use GIK and ASC panels along with 2" blinds titled up but NOT closed to make a nice defuser along with drapes on the large window behind my speakers along with canvas prints on each side wall so as not to look like a recording studio.




forky

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Re: Acoustic Treatment Behind Open Baffle
« Reply #3 on: 31 Jul 2022, 03:22 pm »
LOL for the Ikea chair. That is what you see pictured below. I have this on order and althogh it is leather, it is soft leather: https://www.potterybarn.com/products/raylan-leather-armchair/?catalogId=84&sku=3313847&cm_ven=PLA&cm_cat=Google&cm_pla=Furniture%20%3E%20Chairs&region_id=751260&cm_ite=3313847_14546951700&gclid=EAIaIQobChMIqL2diLKj-QIVC_nICh3lmwqIEAQYAiABEgIiNfD_BwE

I like the diffusors, thanks, will consider.

The shades used as a diffusor is a great idea. Will also consider but probably won't be wife approved - maybe.

Below is a pic from a few days ago. Rug will be here on Friday and curtains are here and just need to be hung - may add shades if wife approves. Since it is the LR wife approval is part of this and proving even more difficult than I thought.

I'm still working on "approval"  :roll: for the following but here is what I'm thinking:
-ASC 16"  tube traps in the two front corners
-??? behind the speakers and in front of the curtains which are in front of the glass. Maybe the diffusors mentioned above, maybe somehing from Gik or other but has to look really nice, as do everything.
-GIK 242 custom image panels on the walls for 1st reflections
-back wall - this is tricky because about 40% of it is open although there is drywall behind the seating position which is about 6' from my chair. Also tricky is that whatever I put on the wall cannot be more than 2" thick. maaaybe 3". May just do another GIK 242 w/ custom graphics or a canvas print.




Btw, room is approx 19' wide x 22' long x 12' ceiling height. She already told me no "cloud".

On that note I went ahead and ordered Focal headphones last night, which will probably get more use than the M3s unfortunately. The house is very open so M3s will only get listened to when she is out of the house - although I am thinking about sound proofing (as much as posible) the MBR door so I can listen to at lower levels at night.

theclipper

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Re: Acoustic Treatment Behind Open Baffle
« Reply #4 on: 6 Aug 2022, 04:18 pm »
Is there any guideline as to how far up on the wall acoustic panels should be hung? I’ve currently got some GIK 244 panels sitting on the floor in the first reflection points, but would like to optimize the height of them.

rockadanny

Re: Acoustic Treatment Behind Open Baffle
« Reply #5 on: 6 Aug 2022, 05:26 pm »
I've been told by one mfr to place center of wall treatments at seated ear height. So I did this for my OBs:



Scroof Neachy

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Re: Acoustic Treatment Behind Open Baffle
« Reply #6 on: 6 Aug 2022, 10:52 pm »
Mapletree Audio huh? Great stuff! Rama Lama Fa Fa Fa.

rockadanny

Re: Acoustic Treatment Behind Open Baffle
« Reply #7 on: 7 Aug 2022, 06:01 am »
Yeah. A piece, along with CD player, which has remained constant over the years. A solid performer.

theclipper

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Re: Acoustic Treatment Behind Open Baffle
« Reply #8 on: 8 Aug 2022, 01:13 pm »
Is there any guideline as to where exactly to place a panel behind the speaker? I.e directly behind it, or would it be better to place them more in line with where the woofers are aimed (so slightly laterally more towards the corner). I’m trying out some GIK Alpha 6a hybrid panels. So far they seem to have really cleaned things up and added a little depth.

mrotino332

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Re: Acoustic Treatment Behind Open Baffle
« Reply #9 on: 8 Aug 2022, 02:37 pm »
The photo is deceiving but I have my X5's toed in and the back wave mid and tweeters are hitting the GIK alpha panels squarely.  I also have bass traps on the floor which are the height of the woofers in which the alpha panels are resting on.  I placed the diffusion panels in the middle of the front wall that Aniwolfe mentioned in an earlier post which covers most of the front wall as I have a narrow dedicated room in the basement.  I found this sounds best in my room.