Acoustic room treatment : advice welcome

So I am at this point which I have no idea what my next move will be.I 've read in theory only a few things about sound and acoustic treatment in general but I don’t know.Start spending cash on bass traps randomly straight away with the hope everything 'll be fixed?I have a serious issue with the lower frequencies for example can’t get a clear image when I m adjusting a kick on my md and when I go closer to the monitor the sound is much more clear so I have an idea of what I m doing but still this is not the right way.The lower frequencies don’t travel to me ears clear enough.Also parts of the room like Windows the door and a small furniture start trembling/reverberating when I m in the beginning with a kick or a bass for example and this can be super annoying.My room is small and wooden which plays a role in this I guess.Monitors are Neumann kh120a

I moved to a new place this year and decided to start with acoustic treatment. This took me a lot of time, researching and planning but the results are great and making music is much more enjoyable. I wander why I didn’t do this earlier.

If you post a plan of your room with the exact sizes, where you have your table, speakers, windows, doors etc and the budget you can spent, it would be easier to help.

I can go today and buy a meter thing to give you the exact size and can post pictures of the room and how everything is placed.I really need some advice cause of my ignorance on this subject.Thank you very very much!!

If you get something like this, it can save you a lot of time…

Can’t get my hands on something like that immediately.Will do as I said above tho as soon as I get back home :slight_smile:

sure!

and you need a mic, what do you already have?

this is what I used: https://www.thomann.de/de/sonarworks_xref_20_mic.htm

I don’t have any Mic,will I need it ?perfect timing cause i am planning an order from thomann actually :stuck_out_tongue:

I strongly recommend it :wink:

but you will need an audio interface with phantom power, do you have one?

acoustic treatment is like a scientific experiment:

  1. measure your room from your listening position
  2. check results
  3. change something
  4. repeat

this is the only way you can really see what you have to do and what your treatment did

you can use a free software like REW and a condenser mic to measure your room:
https://www.roomeqwizard.com

a special measurement mic like that from sonarworks is great cause it is calibrated.

or you can buy a general condenser mic that is also great to record instruments, percussions etc for creating samples like one of this:

Sonarworks works wonders but does limit you to the sweetspot.

If you go diy, then I’d go for something like this:

https://www.soundonsound.com/sound-advice/q-what-kind-bass-trap-do-need

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I dropped two unopened packs of rockwool sono in corners of my room as a quick fix till i get around to do some proper treatment. Helps damping the low end.

A general condenser Mic sounds like a good adittion as well so I 'll go with that.My audio interface rme 802 so yes phantom power can be switched on.Can u give me some details on how to do the measurement of the room ?except width length should i measure things like the distance between the speakers and the wall(they are on stands behind the desk)How exactly should I plan this?Will post pictures as well on top of that

I think the fact that my room is whole wooden and not concrete makes things really worse and a temporary solution like this wouldn’t make much.I m assuming of course

How does using a mic help with acoustic treatment?

Still learning how to treat a room & never heard this. Peaked my interest

I checked out the mic & it looks different but only kbow a little german so hard to read about it

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this is a complicated topic but I try to focus on the things that are most important in my opinion:

  1. Find your ideal listening spot and speaker placement
  2. Create a RFZ “reflection free zone”
  3. Put as much bass traps in the corners as you can

For step one please post a plan of your room. Size, wight, hight. Where are the windows and doors?

basically you look for symmetry from the side walls and 33%-38% distance from the front wall.

the distance between you and the speakers and between the speakers should be even, building an equilateral triangle.

the distance from the speakers to the wall should be not more than 0,80 m in your case. here is a screenshot from the neumann kh 120 a manual.

http://www.neumann-kh-line.com/klein-hummel/globals.nsf/resources/Neumann_KH_120_GSQ_540493_0914.pdf/$File/Neumann_KH_120_GSQ_540493_0914.pdf

you need a mic to measure the acoustic properties of your room so you know exactly where the problems are instead of guessing them. also you need to measure the room acoustics after doing some treatment so you can see if and how it helped and what to do next.

this is what you can get with a measure, it’s called a waterfall diagram and you can see exactly which frequencies are emphasised and how long it takes them to drop -60dB. it’s my room before any treatment. You can see e.g. that I had a really bad spike around 120 Hz and my reverberation time is over 1 second what is really bad.

this is my room after optimising my listening spot and creating a reflection free zone with absorbers on the wall and ceiling. reverberation time is here around 0,3 seconds. no bass traps yet.

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Just got the meter.About the Neumanns I thought it said that the distance should be more than 0,8 from the wall maybe I misunderstood it.I notice that if I am more far from the speakers the bass travels better I can hear things that I couldn’t.Probably I should remove the couch and the things for books from the back to make the place bigger ?this the area that the most reverberation is coming

The place is very small I can’t get more panoramic pictures

Okay so first things first.Correct the distance of speakers from the wall thendistance between me and the speakers and between the speakers to be equal

it looks like your listening position is exactly in the middle of the room, this is probably the worst place to sit. I would get closer to the front wall so you sit around 1/3 of the room length.

find the spot that is exactly in the middle from left and right and 38% from the front wall. put a marker on the floor. this is how you start.

now you can measure with the mic and play around with speaker positions and find a good sweet spot. it is always a trade-off of some kind.

the measurement is pretty easy and takes only 1 min once you get the software. I recommend to save every measurement and give it a clear name so you can compare later.

post some results :slight_smile:

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