Need help about design, abosorber, reflector etc

tenkas · Post by **tenkas** » Mon Nov 03, 2003 2:33 am

Hi!
I read a lot about studio designs. I know a lot but I am a student, I have not much money and I need a studio hehe.

Here is a basic picture of what my studio will look like when I will finish building the left wall. I would like to know what you guys suggest to do with panel absorbers, high reflectors, etc.

I dont think there is much other solutions to place all of my gear and objects in that room. You have to think that whyle jamming, we are 2 guitars, 1 bass and 1 drumer.

I know it seems crazy... but if you have any advice, it's welcome!

Thx a lot

here is the picture
[/img]http://membres.lycos.fr/tenkas/studio.gif[img]

here is the link to the picture
http://membres.lycos.fr/tenkas/studio.gif[/img]

tenkas · Post by **tenkas** » Mon Nov 03, 2003 2:33 am

mmmm I think I did a few mistakes... here is the picture:

here is the link

http://membres.lycos.fr/tenkas/studio.gif

thx

tenkas · Post by **tenkas** » Tue Nov 04, 2003 2:39 pm

hi, me again, just to know if you guys find the diagram that I drew clear enought... I am not an expert with these design programs so if you have any questions just post them and I will be happy to answer them.

I was thinking of putting in the top left corner some 4 inch fiberglass insulation. Also, all of the right wall will be covered with insulation so that the drum doesn't reflects on that wall.

Behind the couch, there are shelves with books in them. I guess the sofa helps with Aborbtion

thx

tenkas · Post by **tenkas** » Thu Nov 20, 2003 2:33 pm

this is a last call, if anyone wants to help, feel free, I would be very happy.

thx

knightfly · Post by **knightfly** » Fri Nov 21, 2003 5:17 am

Sorry for the delay - it looks like your post somehow got overlooked by all of us, I'll see if I can help - I'll mark up your room drawing showing what I would do, but I have to wait a bit until our Site Admin finds me more space for attachments. Hopefully either later today or tomorrow.

I would try explaining with words, but pictures work so much better - Again, you've been most patient - I'll get you some help as soon as I can... Steve

knightfly · Post by **knightfly** » Fri Nov 21, 2003 6:55 am

OK, let's see if I can post pix again - Notice in my markup of your room that I moved the speakers - if possible, they need to be the same distance from the wall as each other, not as I've shown them, but they DO need to be in an equal triangle between speakers and the back of your head, and pointed in the direction of the back of your head, NOT square with the room.

All the yellow I've added is absorption - best to use here is rigid fiberglas insulation, 48 kG per cubic Meter. Owens Corning 703, or Knauf ductboard are good choices. Check the Materials forum for ideas on where to find this.

I recently drew a basic reflection drawing for a corner speaker arrangement, so I know where your reflection problems will be with that setup - that's why I put the yellow absorbent material where I did on your walls.

If money is tight, you can use the 1 inch (25 mm) rigid insulation and mount it a few cm away from the walls, it will still work. If you absolutely cannot find (or afford) this, you can use R-11 (or thicker) batt insulation and cover it with cloth - you would need to make frames of 18mm thick wood to put the insulation in, and to staple the cloth over the fronts.

Hope this helps... Steve

Post by **John Sayers** » Fri Nov 21, 2003 11:41 am

Steve's right with his application of treatment. I'd pull back from the corner even more and build a desk like this.

cheers
john

tenkas · Post by **tenkas** » Sun Nov 23, 2003 4:29 pm

Wow! Thx a lot guys!!!
I have onemore question... do you think I should put some insolation on the ceiling?

And also, I live in Canada so I think I cannot get some Owens 703. To insulate the inside of my wall, I am using ROXUL safe n sound (rockwool)

I think roxul makes some semi-rigid stuff also, I heard that their 4inch products absorbe 100% and more of the 100hz frequencies. Would it be ok to use this? And with what kind of materiel should I cover the semi-rigid fiber? I don't want to be breathing bad air all the time...

So thx a lot for help guys!

Post by **John Sayers** » Sun Nov 23, 2003 8:07 pm

I don't want to be breathing bad air all the time...

I agree tenkas - so I decided to line my studio ceilings with black plastic (the stuff your local garden shop sells) over the insulation to stop the fine glass-fibre particles from falling on you consistently.

The result was interesting in that it maintained the top end (air ) in the rooms.

I now incorporate it into my designs.

cheers
John

tenkas · Post by **tenkas** » Mon Nov 24, 2003 3:19 am

Hi again,
I would like to know if the plastic you are talking about reflexes a lot of highend... because I have a very small room for my studio (about 16x10) and I want all frequencies to be absorb. So do you suggest the 4inch roxul mineral wool? Or is 4 inch just TOO much....

thx a lot

francois

Post by **John Sayers** » Mon Nov 24, 2003 6:29 am

Yeah - the Roxul AFB would be fine - maybe only use the 2" on the ceiling and the 4" on the walls. Yes, I suppose the plastic does reflect the high end, but hey - that's not a problem - the problem usually is that all the highs are taken out which makes the room dull and lifeless.

cheers
john

giles117 · Post by **giles117** » Mon Nov 24, 2003 10:38 am

I have the black plastic film John is speaking of on my ceiling. I noticed that the room had a nicer open airy feeling due to the fact that the top end weas not totally sucked out of the room.

This translated into vocals that did not seem lifeless and Drums that really shined (acoustically speaking)

Bryan Giles

tenkas · Post by **tenkas** » Mon Nov 24, 2003 1:27 pm

wow! really cool info guys!
Why 4in on walls and 2inch on ceiling? Is there any scientific/acoustic reasons? It's not that I don't trust you guys but it's just because I wan't to learn the logic of acoustics better!

Also, here is an totally new question but here it is:
In this room, I have a floor that consist of this: (starting from bottom)
(the room is in the basement)

Cement-2x4 suporting 3/4inch plywood - floating floor.

There is no fiberglass between the 2x4... is that a big problem for acoustics and sound transmission to the next room? (it's in the basement so it's not like if I was on the 2nd story of a house).

Really thx a lot guys, you always impress me.

Also, one more thing I was forgetting (really sorry

) :
Could you draw on the plan the locations were I sould cover the ceiling with fiberglass (2in). Doing all the ceiling would cost $$$$ and I am student so... hehe, when I mean drawing, it's just to put a transparent color (yellow) on the plan were I should put the absorbers on ceiling.

Thx a lot again,

francois