Need some help in acoustic design

[singletone]

Hi ! recently i used the auralex Personalized Room Analysis service to get a good idea of what my room treatment should look like. I'm planning to build most of the absorbers myself since i don't have enough budget to buy the auralex ones. I have an option of buying a minimum density of 4 pcf rockwool(5 is also possible), 2'' thick. I would really apreciate if you could look at the attached drawing, and give me the specs for the mineral wool i should use to replace the panels that are specified on the drawing. As you can see there were a few sugestions, so i would like to know what i should use to replace each different pannel (Any suggestion to change / improve the auralex drawing would be highly appreciated as well).

Here are the dimensions of the room -
length : 11.94 ft
width : 9.08 ft
height : 8.5 ft

Here are links to the products i was offered and can be seen in the drawing :

(2) M224 Corner Bass Traps - https://www.sweetwater.com/store/detail ... l-obsidian
(8) B224 ProPanels - https://www.sweetwater.com/store/detail ... l-obsidian
(3) B224-C Ceiling ProPanels - https://www.sweetwater.com/store/detail ... l-obsidian
(1) ProMAX V2 Portable Treatment System - https://www.sweetwater.com/store/detail ... 2-charcoal


Much appreciated,

Daniel

Enlarged drawing : https://ibb.co/dv2C9y

[Soundman2020]

Hi. Please read the forum rules for posting (click here). You seem to be missing a couple of things!

That said, why do you want such high density mineral wool? Small rooms need bass trapping, not high frequency trapping. Much better to go with lower density stuff that do some decent absorption in the bottom end.

- Stuart -

[singletone]

Hi. Please read the forum rules for posting (click here). You seem to be missing a couple of things!

That said, why do you want such high density mineral wool? Small rooms need bass trapping, not high frequency trapping. Much better to go with lower density stuff that do some decent absorption in the bottom end.

- Stuart -

Hi stuart, I've read the forum rules and changed what's necessary, sorry for the trouble.

Can you maybe specify the density and thickness i should go for when trying to emulate each of the auralex panels i was suggested ?
I would also be very interested reading your thoughts on the drawing or any changes/improvements you would make to it.
If you need any other room informations, please let me know

Sincerely,

Daniel

[Soundman2020]

Hi stuart, I've read the forum rules and changed what's necessary, sorry for the trouble.

Can you maybe specify the density and thickness i should go for when trying to emulate each of the auralex panels

To be honest, I would not try to emulate those panels. Rather, I would design the treatment for your room using common building materials, located at the correct positions, based on actually testing the room to find out how it is really behaving, rather than based on a "one size fits all" guess as to how it is behaving, that might or might not be correct.

Here's a thread (currently in progress) on how to tune a control room correctly: http://www.johnlsayers.com/phpBB2/viewt ... =2&t=21368 . Here's how it can work out, when done properly: http://www.johnlsayers.com/phpBB2/viewt ... =2&t=20471 .

I would also be very interested reading your thoughts on the drawing or any changes/improvements you would make to it.

I can't make out the dimensions of that room, but clearly it is not an acoustically large room, and thus it will need a lot of bass trapping. I don't see any bass trapping in that diagram. So what I would do to treat your room, is to first analyze it properly (here's how: http://www.johnlsayers.com/phpBB2/viewt ... =3&t=21122 ), then design the treatment that the room REALLY needs, based on that.

The problem with most acoustic treatment manufacturers, is that they will only ever recommend devices that THEY sell, never devices that their competition sells. If you go to a Ford dealership to buy a car, he won't recommend that you should buy a Toyota, even though that's what you really need. Instead, he'll try every trick in the book to sell you what you DON'T need, just because he can't sell you what you DO need!

Here on the forum, you don't have that problem. We are not here to sell you anything! We'll just tell you the truth. And the truth is that your room needs bass trapping to start with (undoubtedly), and there is not nearly enough of that in the diagram you were given.

If you need any other room informations, please let me know

Dimensions of the room (L, W, H), purpose of the room, make and model of speakers, and results of actual REW tests, to start with! Based on that, we could give you some initial advice on how to proceed, then refine it later, after you install the first set of treatment and repeat the test procedure.


- Stuart -

[singletone]

The dimensions of the room were added to the original thread; I currantly do not have an option of measuring the room with a mic, so REW test results are a bit problamatic to provide.
The purpose is to build a project studio, as a composer i am looking for a good envieroment to compose and produce, it doesn't have to be perfectly built since i will not make any significant noise to bother the neighbours, however i do want to be able to get a good and balanced mix out of my composition, so i need the room to be treated well enough.
About the monitors : KRK Rokit 6, 3rd Gen.
I would really apreciate your advices guys - the purpose is not to build a recording studio, to be honest i am not going to be recording, just a good environment to make my music and mix it.

To be honest, i don't know where to start

[Soundman2020]

To be honest, i don't know where to start

I would start by setting up your speakers in that room, in the theoretical optimum locations, getting a measurement mic (not expensive) and running REW ( see here: http://www.johnlsayers.com/phpBB2/viewt ... f=3&t=2112 ), then posting the results here for analysis!

Without knowing how the room is performing right now, it is impossible to say what treatment it will need.

This is like calling a doctor on the phone, and saying "I'm sick! Fix me!" but then not telling him any of your symptoms, and telling him that even taking your temperature is not possible! He will not be able to figure out what is wrong with you, so he will not be able to prescribe treatment.

REW is rather more than just taking your temperature, though: It's more like doing a full-body MRI scan, from head to toe, and also a complete blood test... with that, the doctor can do a good diagnosis, knowledgeably, and prescribe suitable treatment...

however i do want to be able to get a good and balanced mix out of my composition, so i need the room to be treated well enough.

That's like telling the doctor: "I do want to be able to live a good and balanced life, so I need you to treat me well enough..." If you won't tell him what's wrong, and wont get an of the tests done, then he won't be able to help you....


- Stuart -