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Author Topic: Diffusor dimensions for backwall of my new controlroom  (Read 24421 times)

Constantin

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Re: Diffusor dimensions for backwall of my new controlroom
« Reply #30 on: August 04, 2009, 03:47:26 pm »

Hi friends   Smile

The ventilation system of the controlroom is in, and works pretty good, much better than expected  Smile

There is alot of airflow, but very quiet, also with the fan at full speed.

i used 3 silencers for the exhaust, and 3 for the freah air.
One at the pipe ends in the CR, one at the place where the ducts quit the CR and one where the fans blow out the used air into the hallway.
I also get my freh air from the hallway since it`s well temperated air at winter and sommertime, and less work for my aircondition.



here is a pic from today`s work:

cheers
constantin
index.php/fa/13089/0/

Constantin

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Re: Diffusor dimensions for backwall of my new controlroom
« Reply #31 on: August 19, 2009, 05:01:09 pm »

Here is a quick update of the front of the controll room

http://img195.imageshack.us/img195/3117/bild051u.jpg


http://img441.imageshack.us/img441/4926/bild040.jpg



http://img16.imageshack.us/img16/194/bild049nwb.jpg


cheers
constantin

Thomas Jouanjean

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Re: Diffusor dimensions for backwall of my new controlroom
« Reply #32 on: August 20, 2009, 06:05:34 am »

Great work! See you're doing much better Smile

Is that actual decorative stone on the front wall? (sorry, hard to see with lo-res pics)
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Thomas Jouanjean
Northward Acoustics - Engineering and Designs
http://www.northwardacoustics.com
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Constantin

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Re: Diffusor dimensions for backwall of my new controlroom
« Reply #33 on: August 20, 2009, 09:26:27 am »

Hi Thomas

Yes i feel much better, and try to work as much in the studio as possible.


It`s not real stone... Laughing
It`s just a vinyl wallpaper, but i thought it looks cool and unique to set the soffitmounted speakers into a "stonewall"  Razz

cheers
constantin

Thomas Jouanjean

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Re: Diffusor dimensions for backwall of my new controlroom
« Reply #34 on: August 20, 2009, 11:19:26 am »

I've done the stonewall thing a few times, with real or "semi-real" stones. It's nice!
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Thomas Jouanjean
Northward Acoustics - Engineering and Designs
http://www.northwardacoustics.com
http://www.facebook.com/pages/Northward-Acoustics/1062876633 71

Pro Audio Partners:
ATC Loudspeakers
FOCAL Professional Speakers

Constantin

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Re: Diffusor dimensions for backwall of my new controlroom
« Reply #35 on: August 20, 2009, 04:46:41 pm »

Quote:

I've done the stonewall thing a few times, with real or "semi-real" stones. It's nice!

Do you have any nice photos of your work for inspiration?

i alwas look for nice color and material combinations.

Tomorrow i will buy the lamianted floor for the CR. Not shure until know which clor i will choose, but i think it will be a black one with a tile look.

but i will see tomorrow in the shop, what is the best for the overall design.

cheers
constantin

Constantin

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Re: Diffusor dimensions for backwall of my new controlroom
« Reply #36 on: August 26, 2009, 09:47:54 am »

Hi friends

i worked a litle in the CR abd did some pre meassurements without desk or racks inside the room to find the frequencys for the tuned pannel basstraps at the lower back and the lower side of the room.

i found out, that my RT 60 is to short between 150hz and 1,5khz

under 100Hz i have RT60= 0,25s 150 to 1,5khz i have between 0,18s and 0,12s what is to short for my ears.
above 1,5khz i have constant 0,2s waht is ok.


Do you know a material to cover my corner basstraps at the celling which allows waves uner 150hz to pass, and reflect above these frequency?

i play with the idea to cover the basstraps with 9,5mm drywall, since it`s cheap a nd easy to install. I´M not shure if it`s to much mass for this purpose!?!?!?!?!?!?!


here are some graphs from the empty room meassurments an the basstraps i want to cover:

http://img197.imageshack.us/img197/1192/fgohneconsole.jpg

http://img248.imageshack.us/img248/994/wassefallohneconsole.jpg


http://img253.imageshack.us/img253/4599/xbild067.jpg

index.php/fa/13211/0/

any comments about my ideas and results?

cheers
constantin

Thomas Jouanjean

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Re: Diffusor dimensions for backwall of my new controlroom
« Reply #37 on: August 29, 2009, 03:29:43 am »

I was gone for while... will have a look Smile
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Thomas Jouanjean
Northward Acoustics - Engineering and Designs
http://www.northwardacoustics.com
http://www.facebook.com/pages/Northward-Acoustics/1062876633 71

Pro Audio Partners:
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Constantin

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Re: Diffusor dimensions for backwall of my new controlroom
« Reply #38 on: January 08, 2010, 07:50:38 pm »

Hi friends
I have a small update for the control room.
At the backside i coverd all the not RFZ important parts of the basstrap with some left over wood to keep some life in the room.
in the middle of the back at the floor i placed some seald boxed for helmholz-resonators which i will tune after some measurments. in the midle of the lower backside i will place a plywood pannel absorber tundes to a room mode.
In the front you can see the first sketch of my desk, and some trim at the wall.
At the side walls you can see the frames for some more tuned absorbers.

Today i worked the celling of the CR and placed the clouds with build in lights.



http://img515.imageshack.us/img515/6721/bild020.jpg


http://img109.imageshack.us/img109/223/bild023e.jpg


http://img40.imageshack.us/img40/8875/bild021v.jpg


http://img109.imageshack.us/img109/9742/bild022t.jpg













cheers constantin

Constantin

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Re: Diffusor dimensions for backwall of my new controlroom
« Reply #39 on: February 02, 2010, 11:47:54 pm »

Hi friends.
today i did some measurments in the CR with a empty desk and some limp mass membrane absorbers build with bitumen sheets between 100mm isover TP1.
They work great. no tuning nedded. I just put them in the place of low velocity and they start to vibrate, and help alot with modal ringing.

But i still have 1 problem, wich need help from the pro-designers.

In the picture below you can see the the frequency plot of my listeningposition.
You will realize the heavy dip at 140hz which is the floor reflection. speaker hight is 1,3m distance to ear is 1,85m. difference between direct path and reflected path is 1,2m which gives me the 180

Constantin

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Re: Diffusor dimensions for backwall of my new controlroom
« Reply #40 on: February 06, 2010, 02:40:42 pm »

Today i worked a little on the desk in the CR.
I made a beautiful armrest with nice black lether.
the CR is waiting for final fabric covering and gear into the racks  Smile
http://img524.imageshack.us/img524/2364/studiotischohneequipmen.jpg


But please Thomans, Franman, remember my questions in the last post about the floor-reflection.
cheers
constantin

franman

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Re: Diffusor dimensions for backwall of my new controlroom
« Reply #41 on: February 11, 2010, 10:24:15 pm »

The floor reflection issue is tough. We struggle with it all the time. Does your furniture 'block' this reflection? Are you sure it's not something off the ceiling? Just thinking out loud here..

FM
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Constantin

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Re: Diffusor dimensions for backwall of my new controlroom
« Reply #42 on: February 12, 2010, 06:42:00 am »

Thanks fran for answering.

I am sure this is not a celligreflection since the celling hight is about 3,5m and i have a 20cm thick cloud, filled with 5kPa insulation, with 20 airgap at celling reflection points.

When i place some insulation on the floor the dip decrease, but i can not place a 20cm absorber on the floor, for optical reasons, and i need some hard floor, when i climb behind the desk, to change the patches.

But i think i can build a kind of stage with perforated top, which allows basswaves go trough, but is rigid enough to hold my wight. Then i cover it with carpet, and nobody knows that there is an absorber under it!?


Or do you think the situation will change when the racks are filled. This may can be good for blocking the reflection!?


cheers
Constantin


http://img39.imageshack.us/img39/1407/bild034q.jpg


http://img685.imageshack.us/img685/6776/bild033ls.jpg


http://img686.imageshack.us/img686/8043/bild032y.jpg

Thomas Jouanjean

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Re: Diffusor dimensions for backwall of my new controlroom
« Reply #43 on: February 17, 2010, 01:33:48 pm »

Constantin wrote on Tue, 02 February 2010 22:47


In the picture below you can see the the frequency plot of my listeningposition.
You will realize the heavy dip at 140hz which is the floor reflection. speaker hight is 1,3m distance to ear is 1,85m. difference between direct path and reflected path is 1,2m which gives me the 180
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Thomas Jouanjean
Northward Acoustics - Engineering and Designs
http://www.northwardacoustics.com
http://www.facebook.com/pages/Northward-Acoustics/1062876633 71

Pro Audio Partners:
ATC Loudspeakers
FOCAL Professional Speakers

Constantin

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Re: Diffusor dimensions for backwall of my new controlroom
« Reply #44 on: April 01, 2010, 08:01:55 pm »

I am not dead!!!!
Things are moving slowly, but they are moving.
It ist hard to build a Studio alone without any help, and go to the regular job beside this build.
It is a one man Studiobuild.

Still not finished, but ready to hear a littlebit music while working.


Here are some bad cellphone pics:

http://img441.imageshack.us/img441/6595/bild060.jpg

http://img521.imageshack.us/img521/3131/bild061v.jpg


cheers
Mika
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