Acoustic treatment my room

[funkytech]

Hard to say with the information provided but it could be. *Just saw the photos you posted.

Since the distance from the L speaker to the L wall seems to be the same as R speaker to the R wall, and underlying wall material is the same(?), then certainly it is advisable to maintain symmetry also in room acoustic treatment.


The key elememt for bass absorption is the right, rather low airflow resistance [Pa*s/m²] and of course >> thickness of chosen material. Unfortunately only in German, but maybe quite usable with automated translation, this article gives a good overview what to expect when building porous absorbers.


I think that can wait.

oh thank you for one more value article

 

[829]

Not sure if you saw @funkytech, but I added another suitable build for bass absorbers.

I had a look at your photos and from my gut feeling* I would try to:

- Match the left early reflections absorber to the right ones. Symmetry!

- Ceiling cloud seems unnecessary long but that might be perspective error from the camera lens. I'd rather have 2 or 3 of these modules, maybe even in horizontal orientation (90° different to what's on the photos) to cover more ceiling surface from L to R. Verify the early reflection points on the ceiling are covered through your entire movement area of your mixing position

- On the rear wall I would put a bass absorber. Basically what you have in thicker and at a fixed distance to the rear wall. Here either broad band or more likely with a scatter plate (that's something like this)

- Put as many appropriate bass traps in all corners, i.e. all 90° interactions of 2 walls where possible. Also behind the speakers. These not broad band as suggested before

*Of course the results should be verified by measurements and by listening - and the measures adapted accordingly.

How much absorption do your curtains contribute to?

 

[Bjorn]

My point wasn't really that the bass traps wouldn't work, more about how much effect they will give (not so much until your whole room is full of bass traps) compared to cost and incovenience. With a bit of added EQ, the room is already better than many professional studios.

For your information:
The cost of the result below was less then 1/3 of the cost of your 10D Dual Opposed 2x10" subwoofer.

 

[funkytech]

Not sure if you saw @funkytech, but I added another suitable build for bass absorbers.

I had a look at your photos and from my gut feeling* I would try to:

- Match the left early reflections absorber to the right ones. Symmetry!

- Ceiling cloud seems unnecessary long but that might be perspective error from the camera lens. I'd rather have 2 or 3 of these modules, maybe even in horizontal orientation (90° different to what's on the photos) to cover more ceiling surface from L to R. Verify the early reflection points on the ceiling are covered through your entire movement area of your mixing position

- On the rear wall I would put a bass absorber. Basically what you have in thicker and at a fixed distance to the rear wall. Here either broad band or more likely with a scatter plate (that's something like this)

- Put as many appropriate bass traps in all corners, i.e. all 90° interactions of 2 walls where possible. Also behind the speakers. These not broad band as suggested before

*Of course the results should be verified by measurements and by listening - and the measures adapted accordingly.

How much absorption do your curtains contribute to?

Thank you

I will try to do something with Celling clouds and the symmetry. I have 3 corners my room, so 2 behind the monitors have a superchanks.

The curtains are thick, but I doubt they're thick enough to block the problematic frequency range below 300 hertz.

 

[funkytech]

For your information:
The cost of the result below was less then 1/3 of the cost of your 10D Dual Opposed 2x10" subwoofer.

View attachment 553754

How you did it =)

 

[829]

Thank you

I will try to do something with Celling clouds and the symmetry. I have 3 corners my room, so 2 behind the monitors have a superchanks.

The curtains are thick, but I doubt they're thick enough to block the problematic frequency range below 300 hertz.

You have a lot more corners! Every 90° angle is suitable for bass traps. Don't just think "2D". In corners where you want to add bass traps but cannot cover the whole length, it's best to place them in the middle.

I was asking for the curtains because of decay times and possible influence on the higher frequencies. Maybe take a measurement with exact same setup but all curtains open.

PS: While your speakers are excellent, anechoic data estimation shows a slight droop in lower treble (see estimated in-room response). You might want to address that with some EQ if still present, after room treatment has been finalised.

 

[Flaesh]

you can find it by my nickname

I found a few from last year and listened to them quietly last night. Now I have an idea of what kind of music you're talking about, but I'm not sure how important that 40+ Hz bass is for you and your listeners, and what the right amount is. It seems to me that there are no special requirements for bass articulation here(?).
I like it when there is music below 40, fortunately my home system allows it))

 

[funkytech]

You have a lot more corners! Every 90° angle is suitable for bass traps. Don't just think "2D". In corners where you want to add bass traps but cannot cover the whole length, it's best to place them in the middle.

I was asking for the curtains because of decay times and possible influence on the higher frequencies. Maybe take a measurement with exact same setup but all curtains open.

PS: While your speakers are excellent, anechoic data estimation shows a slight droop in lower treble (see estimated in-room response). You might want to address that with some EQ if still present, after room treatment has been finalised.

You were right: the first reflections don't enter the cloud. Yesterday, I held two felt panels above the right speaker and got a very noticeable reduction in the null at 165 Hz.

Thank you. I'll wait for the measurement microphone to arrive before taking any further action.
I found nice one for 50$ with 3 calibration files

 

[funkytech]

I found a few from last year and listened to them quietly last night. Now I have an idea of what kind of music you're talking about, but I'm not sure how important that 40+ Hz bass is for you and your listeners, and what the right amount is. It seems to me that there are no special requirements for bass articulation here(?).
I like it when there is music below 40, fortunately my home system allows it))

I don't go so low because I can not control it lol

 

[Flaesh]

It's not entirely clear about the door on the left. Your room is quite narrow and long. You could probably do something like this

using only two subwoofers in a DBA, double bass array, or SSS configuration.