Hi. Not sure if this is the right place but as part of redecorating the lounge, we are considering a slatted wood ‘media wall’ to mount the TV and hide the cabling.
My stereo speakers would be in front of the same wall either side of the TV and the slatted area would extend behind the speakers.
The far wall is about 5m away so room resonance is about 36Hz (confirmed with REW). In the range of bass guitar ( and my speakers go that low).
Has anyone experience with using acoustic slatted wood panels to absorb low frequency (just attenuate the resonance a bit)? Would standing them a few inches off the wall and backing with mineral wool help?
We’ve a few months to plan yet and any help would be appreciated.
I don’t have experience with them, but I am aware they have become an “in thing” in DIY stores and the like. even full room lining will have little or no effect at low frequencies, but likely some absorption and a little scattering at mid and high frequencies. I have heard of them being used on a thicker - say 5cm+ layer of acoustic absorbent material which would absorb more, and go a bit lower in the frequency range while having that same currently fashionable look (you presumably like the look -I don’t, feeling it is more fitting appearance for an external wall, but that os taste. I think they may have been developed originally for places like offices to improve voice intelligibility.
I agree more likely to diffuse the higher frequencies, but wondered if creating a wall gap and damping may help the lower range too.
The room is not bad at the moment but does have a hump at 36Hz and the new room layout will remove a bit of sofa absorbing.
Primarily, the slatted section is to hide cabling without burying in the wall itself. Acoustic would be a benefit though. There is no room for traps.
If you’re going to do it anyway, building in a gap will be better; building in a bigger gap and some more PET felt or a slab of Rockwool better still.
You know it makes sense… 
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To fix that 36Hz is likely require room rearrangement (might work but might have other effects, or bass traps. Traps inevitably are bulky, though a tuned trap more effective than broadband, otherwise active (powered) traps are much more efficient so more effective from a smallish size, but pricey.
Unfortunately traps are too intrusive but as Andy-R said, I suspect some wall damping/ gap will help.
The rooms not too bad, hitting the wrong note can hang a bit but it’s not too boomy.
If someone had some clear success would have been useful but probably won’t make things worse and we have to hide the TV cables anyway
are your speakers floor standers or stand mounts?
When I bought my naim cd and amp the floorstander sound was so clear the carry through down through the floor to the living room had increased significantly, as I discovered one night when I went down and the music was still playing upstairs.
I built little wooden stands to raise them about 2 inches and the carry through lessened a lot and a particular note boom unexpectedly dissapeared as well….you never know what will do what….
Agree that can make a difference.
Mine are floorstanders and mounted on Townsend podiums. They decouple well. I have a concrete floor.
Absolutely!