Your opinion about my room

[Glenn Kuras]

Your picture is not showing up.. For bass trapping you want the panels to be 24 inches and straddle corners. You can use the following as a guide for set up.
GIK Acoustics: Room Setup
Basics, Bass traps, Diffusion, Panels video

[Arqen]

Golitan11,

I presume you know this, but just in case you don't: instead of dealing with 3rd party photo upload service, you can upload your photo directly to the thread by first clicking the "Go Advanced" button (beside "Post Quick Reply"), and then clicking the attachment icon (looks like a paper clip).

[Golitan11]

Here it is sorry.

[Glenn Kuras]

the video I gave you plus these 2 should get you most of the way there.
GIK Acoustics: Early / First Reflection Points
GIK Acoustics: Bass Traps and Understanding Low Frequencies - YouTube

[Golitan11]

I already watched all your videos and all Ethan's articles. I just wanted to know your opinion. Thanks!

[Golitan11]

I have four main questions:

1. Do I absolutely need a measurement microphone to make some test before I make any acoustic modification in my room?
2. Can I keep this setup or I need to change some drawer or bed postion?
3. Does it mather if I do not place any basstrap in the dorr corner (because the door blocks)?
4. Instead of making 24'' straddle corner bass traps, can I make 16'' basstrap (6'' thick) with air gap (because I do not want the bass traps to take all the place).

Thanks for your help!

[Glenn Kuras]

1. Do I absolutely need a measurement microphone to make some test before I make any acoustic modification in my room?

If you want to test the room then yes I recommend the right mike. Keep in mind though if you don't understand what you are looking at then the best test for you is to see how well your mixes translate. If you are finding that you don't have to run out to the car to check all of your mixes then you know your room is in good shape.

2. Can I keep this setup or I need to change some drawer or bed postion?

You need center your set up on the wall. Summitry is very important, as talked about in one of the videos I linked for you.

3. Does it mather if I do not place any basstrap in the dorr corner (because the door blocks)?

There are 12 corners in a room so if you have to skip that one then just move on to the next.

4. Instead of making 24'' straddle corner bass traps, can I make 16'' basstrap (6'' thick) with air gap (because I do not want the bass traps to take all the place).

I really recommend 24". 16 might help but.................................

[Golitan11]

Ok here are my others questions:

1. Should I:

a) Buy two packs of 8 24'', cover four vertical corners (two 3'' panels each) and cover reflection points.
b) Buy two packs of 12 16'', cover four vertical corners (four 3'' panels each (two panels thick so 6'')) and cover reflection points.
c) Buy one pack of 8 24'' and 12 16'', cover three vertical corner with the 16'' (four 3'' panels each (two panels thick so 6'') and cover reflection points with the 24''.
d) Buy one pack of 8 24'' and 12 16'', cover four vertical corners with the 24'' and the 16'' (four 3'' panels each (two panels thick so 6'' (one 24'' and one 16'')) and cover four reflection points with the last 16'' panels.

P.S. In conclusion, I only have the money to buy two packs (I have the choice between 12 16'' and 8 24''). I just want to know which ones to buy (I can buy these two different packs or two of the same pack) and use them for what.

2. I center my desk with the 15,5' wall or the 13,5' wall (keep in mind that I keep my desk on the actual wall)?

3. Does the bed and the two drawers in the left corners mather (both obstruct a corner)? What about the small 6' large portion on the right (do I treat this part, does it mather) and the things on my desk?

4. I am a bit confused about this but when you are at your listening position, will you hear more bass or less bass with bass traps?

5. Is the rear wall too far for placing reflection points absorption panels? Also, do I need to place absoption panels behind speakers?

6. Are "under monitors" foams mandatory between my monitors and my wooden desk (like Auralex MoPads)? If yes, I can I build my own (which material)?

Thanks, you help me a lot!

[AwwDeOhh]

For the corner with a door (have the same problem), i made a soffit trap for above the door, and a trap on a stand with caster wheels that i can move as needed.

RE basstraps: they should help tighten up the bass, so you're hearing what is coming out of the speaker rather than what your room does to the sound.

[Golitan11]

Ô Glenn... can you please answer the questions 1, 2, 3, 4, 6 (AwwDeOhh already answered Question 5). Thanks!

[Golitan11]

Or another person who can answer these questions.

[Golitan11]

No one can answer these? I really want to finish with that and buy my stuff...

[Glenn Kuras]

P.S. In conclusion, I only have the money to buy two packs (I have the choice between 12 16'' and 8 24''). I just want to know which ones to buy (I can buy these two different packs or two of the same pack) and use them for what.

Go with 24"x4" in depth.

2. I center my desk with the 15,5' wall or the 13,5' wall (keep in mind that I keep my desk on the actual wall)?

Positioning Listening Spot Video Tutorial

4. I am a bit confused about this but when you are at your listening position, will you hear more bass or less bass with bass traps?

More, even, tight low end.

5. Is the rear wall too far for placing reflection points absorption panels? Also, do I need to place absoption panels behind speakers?

Those are 2 questions.
It depends on how close the wall is to the listening spot. In your case it is close enough to be a early reflection point.
You only need panels behind the speakers if treating SBIR.
Learning SBIR | Speaker Boundary Interference Response

[Golitan11]

Yeah but there are no 4'' thick model, only a 3'' model (made in 24'' or 16'' large). That's why I was asking this question.

[Cegor]

Originally Posted by Golitan11

Yeah but there are no 4'' thick model, only a 3'' model (made in 24'' or 16'' large). That's why I was asking this question.

Owens Corning and Roxul's stuff come in usually 47" x 23" x 2" slices.

For the broadbands, try to go at least 4". Make sure to also leave an air gap.

Divide the length of the wall where your computer is in half and put your computer monitor in the center. This is the position you want to be in.

[jim1961]

If you can get some measuring equipment, I wouldnt do a thing until then. Your flying a bit blind without knowing where you are in an accurate fashion. Then you will have the ability to measure each change and know whats working and its effect.

Measurement tools are a must for room treatment imo.

[Golitan11]

Sorry Cegor but the Roxul Safe n' Sound that I want to buy is only made in 3'' thick. Go on their webste if you want to be sure.

[AwwDeOhh]

Originally Posted by Golitan11

Sorry Cegor but the Roxul Safe n' Sound that I want to buy is only made in 3'' thick. Go on their webste if you want to be sure.

so make your traps 6" thick!
will work better, especially if you can space them off the wall.
You have two identical dimentions in your room... which will indicate your low end untreated will be a modal mess. You can't overdo bass trapping in that room.