Smalish bedroom studio acoustic treatment

All about acoustics. This is your new home if you already have a studio or other acoustic space, but it isn't working out for you, sounds bad, and you need to fix it...
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musictracer
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Posts: 16
Joined: Mon, 2020-Feb-03, 17:20
Location: Macedonia (Greece)

Smalish bedroom studio acoustic treatment

#1

Postby musictracer » Mon, 2022-Jul-25, 16:16

Hello everyone,
First of all, I know it's been a while now, but I would like to express my deep condolences to - the great master of acoustics - John Sayers' relatives and friends. It was of great sadness to learn about his passing. I pray he rests in peace and will always be remembered as the great generous acoustics engineer and consultant that helped so many of us reach our dreams through his forum completely free of charge.

Now this topic will practically be the continuation of this topic https://www.digistar.cl/Forum/viewtopic.php?t=208 which derailed from it's initial title after the title request was resolved. Through a couple of recent replies I understood that this was confusing people, so I thought it would be best to start from where it got as a new topic that is focusing an the new target and not what the previous title was reading.

So, I have a bedroom which is currently the only room I can use for mixing. The rough dimensions are 3,26m x 2,5m(due to furniture) x 2.76m. With Stuart's useful advice in the initial topic I was able to build 3 big corner absorbers along with the 3 First Reflection panels I had already, as well as a ceiling cloud that is omitted in the sketchup snapshots for practical viewing reasons. My monitoring setup consists of a pair of hs5's paired with an adam sub7 , a pair of APS klasiks2020 as mains and a 2.1 desktop system. In my current setup my mains don't perform as they are meant to and fixing this will practically be the goal of this very topic.

As previously mentioned I have created a sketch of the room layout which gives a good representation of what my room looks like (it is always more beneficial to have a sketch rather than trying to describe a room's layout ;) ) The layout was different initially , but following Stuart's advice I managed to get the desk across the balcony door which provided a definitely noticeable lower end improvement compared to the previous setup.

There are quite a few issues that I hope that can be fixed in there , but one that I am consistently struggling with is the missing of issues around the 740hz when mixing with my mains, (curiously something I am not having with my hs5's ) and that is frustrating because klassiks2020 are meant to be quite flat, so hopefully it has to be a room issue and not a speaker one.

I upload a few measurements done in the past along with the REW mdat file and of course snapshots that hopefully will help get a better view of what is going on in there.

Please note that these are slightly different measurements than the ones posted in the latest posts of the initial topic. Over time I have taken plenty of measurements, but the main difference between these and the initial topic ones is that the Klasiks are on the outside, while the hs5's are on the inside in the current setup. Regardless these are just for a preview of the room behavior as I hope that by getting some help on this topic , more measurements will be needed to be taken for sure :-)

Bedroom studio  2022 - across balcony door - Inside ..jpg
Bedroom studio  2022 - across balcony door - E..jpg
Bedroom studio 2022 - across balcony door - E..jpg (43.59 KiB) Viewed 1179 times
Bedroom studio  2022 - across balcony door - E..jpg
Bedroom studio 2022 - across balcony door - E..jpg (43.59 KiB) Viewed 1179 times
Bedroom studio  2022 - across balcony door - S..jpg
Bedroom studio 2022 - across balcony door - S..jpg (43.85 KiB) Viewed 1179 times
Bedroom studio  2022 - across balcony door - S..jpg
Bedroom studio 2022 - across balcony door - S..jpg (43.85 KiB) Viewed 1179 times
Bedroom studio  2022 - across balcony door - W..jpg
Bedroom studio  2022 - across balcony door - N..jpg
aps L+R  on the outside (across balcony door setup).jpg
hs5 L+R+Sub.jpg
hs5 L+R  on the inside  (across balcony door setup).jpg
klasik2020 L.jpg
Hs5 L.jpg
Klasik2020 R.jpg
hs5 R.jpg
2.1 (L+R+Sub).jpg


Thanks a lot in advance!
Stay safe, God bless!
Attachments
26-4-21- ACROSS BALCONY DOOR (NEW SETUP).mdat
(21.14 MiB) Downloaded 83 times
26-4-21- ACROSS BALCONY DOOR (NEW SETUP).mdat
(21.14 MiB) Downloaded 83 times



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gullfo
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Joined: Fri, 2021-Jun-25, 14:50
Location: Panama City Beach, FL USA

Smalish bedroom studio acoustic treatment

#2

Postby gullfo » Wed, 2022-Jul-27, 11:56

based on your diagrams, you have significant disparity in the symmetry of treatments, so i'd work on making either side of your desk much more symmetrical...



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musictracer
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Posts: 16
Joined: Mon, 2020-Feb-03, 17:20
Location: Macedonia (Greece)

Smalish bedroom studio acoustic treatment

#3

Postby musictracer » Wed, 2022-Jul-27, 13:39

gullfo wrote:Source of the post based on your diagrams, you have significant disparity in the symmetry of treatments, so i'd work on making either side of your desk much more symmetrical...

Hey gullfo, thanks for your advice!
You are right in that I am having a symmetry issue in there which has an impact in stereo representation, phantom center, etc. The problem is that nothing you see in the sketch (furniture) can be moved outside the room. It all has to be in there, creating this intensive lack of space. Imagine that I had a different lay out initially with the desk across the left (long) wall. It was more convenient in terms of space management, but quite worse in terms of acoustics.
Following Stuart's advice I managed to get it along the balcony door, as it is now. This for example made it hard to reach the drawers on the right whenever I need to , but definitely improved acoustics both stereo and spectrum wise, so I stayed with that with no second thought ;).
Regardless, the biggest issue I am facing right now is the extensive dip around the 700hz area shown in my main monitors. Probably the 180hz and the 90hz as well, which seem to have an harmonic relation, but I don't know what might be causing it. Probably an SBIR issue, dunno. I'll need advice on this.



User avatar
musictracer
Active Member
Posts: 16
Joined: Mon, 2020-Feb-03, 17:20
Location: Macedonia (Greece)

Smalish bedroom studio acoustic treatment

#4

Postby musictracer » Mon, 2022-Oct-03, 15:29

Hello everyone!
Just came back with an update as I decided to add another absorption panel across the balcony door, right behind and above the pc monitor. The panel is of same length (1.2m) and width (0.6m) as the side panels, but it is 50% deeper (0.15m).
I am not sure how obvious this may seem in the measurements, but it definitely helped get a clearer sonic view, both clarity and stereo wise. Comb filtering was diminished to some point for sure as with careful listening I get to easier distinguish resonances I was missing previously around the 700hz area. It's far from perfect yet, but the improvement is obvious and that is really encouraging.

I also replaced half of the insulation of the 2 side panels with a lighter yet still effective synthetic product called izifon. It is the same I used for the most part of the cloud panel. This could probably have played a part in the improvement as well, though I can't be sure, as I only measured after both the insulation replacement and the addition of the balcony door panel.
As before, I have attached the new REW mdat file for anyone interested in further investigation.
Any recommendation on improving acoustics in my room is desired and appreciated! :)
Attachments
Door Panel Added - aps L+R.jpg
door panel added - hs5 L+R.jpg
27-9-22 - Door Panel Added (balcony) - (for digistar) .mdat
(12.73 MiB) Not downloaded yet
27-9-22 - Door Panel Added (balcony) - (for digistar) .mdat
(12.73 MiB) Not downloaded yet




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