Trap placement

[Getafix]

Hi guys,

My studio has the following dimensions:

29 Feet (length) x 15 Feet (width) with a 10 foot ceiling. I have 16 traps placed in the room, four 2" one's & twelve 4" traps.

I took some pics so that you can see how i have them placed now. Sorry for the bad quality.

Front wall (4" rockwool, the two traps in the middle are spaced 4" from the wall):


Side walls (2" rockwool, spaced two inches from the walls):


Rear wall (4" rockwool, the two traps in the middle are spaced 4" from the wall & i still have to put up the other corner trap properly:



I have just ordered an additional ten 703 panels (2" thick). These will come with a foil covering on one side. I've been reading up that it is best to avoid panels with FRK on the first reflection points.

I want to make a frame that can hold three vertical panels that i'll place on the first reflection points. Should i rip off the FRK facing on the panels for these?

Any suggestions on which areas to treat next? Once the first reflection points are covered am i better off focusing on the front & back wall?

Also what thickness would you guys recommend for the wall ceiling and wall floor corners on the front and back wall.

Thanks for the help.

[Tomer1]

It apears that you have a fairly high ceiling,
I would use it for bass trapping ,a shame it will cover the lovely decoration.
You could probably go with 6-8` + 2-4` air gap and still have a spacious room with absorption all the way down to 50hz!
If your going 100% ceiling covering better go with FRK so keep the upper freq spectrum more or less intact.

[Getafix]

Covering the whole ceiling is going to be tricky. The actual ceiling is even higher, this ceiling is placed on a delicate frame which wouldn't be able to handle the load of all those panels.

Perhaps i will do it at some point in the future but for the moment i'm looking for advice on placement in other places. Anyone?

[Tomer1]

Perhapes you sould take some messurments of the room and try to spot problem areas in terms of mode accurence,
Aswell as abnormal low end peaks\dips which may need the use of tuned panels.

[Glenn Kuras]

I want to make a frame that can hold three vertical panels that i'll place on the first reflection points. Should i rip off the FRK facing on the panels for these?

Yes

Any suggestions on which areas to treat next? Once the first reflection points are covered am i better off focusing on the front & back wall?

You would need to test the room, but with your room size I would keep covering corners and maybe start to think about diffusion on the back wall and the back 1/3 side walls.
It looks like to me you have the front wall pretty well taken care of.

Glenn

[Terry McInturff]

Is s-cube's front wall really going to be ok with that significant amount of flat, untreated wall?
Just curious and want to learn.

[Glenn Kuras]

I think so, but needless to say he has other places to attack first.

[Getafix]

Thanks for the help guys. Do you think i can get away with 2" panels on the ceiling/wall corners? I figured i could cover more area this way.

[Glenn Kuras]

Originally Posted by s-cube

Thanks for the help guys. Do you think i can get away with 2" panels on the ceiling/wall corners? I figured i could cover more area this way.

For straddling corners go with 4" or more.

[Getafix]

Guys i have another small question.

I've just received delivery of an additional ten 703 panels (2").

These are a bit wider than the one's i previously had, around 3 feet in width. So i was thinking of using these on the wall directly behind my monitors.

So the question is whether i should just put a 2" panel behind the monitors or combine two to make a 4" one.

Thanks.

[Glenn Kuras]

Originally Posted by s-cube

So the question is whether i should just put a 2" panel behind the monitors or combine two to make a 4" one.

Thanks.

Make them 4" and space them off the wall 4" if possible.

Glenn

[Getafix]

Thanks Glenn! thumbsup

I have another small question for you. The 703 panels have FRK facing on one side. I used one 2" panel spaced 2" from the wall for the first reflection points on the side walls.

The FRK facing is now on the backside of the panel, so the side facing the room has no FRK.

From what i've read this shouldn't be a problem but should i rip it off just in case? I'll be covering them in fabric tomorrow so i thought i'd confirm it first.

[Glenn Kuras]

Originally Posted by s-cube

Thanks Glenn! thumbsup

I have another small question for you. The 703 panels have FRK facing on one side. I used one 2" panel spaced 2" from the wall for the first reflection points on the side walls.

The FRK facing is now on the backside of the panel, so the side facing the room has no FRK.

From what i've read this shouldn't be a problem but should i rip it off just in case? I'll be covering them in fabric tomorrow so i thought i'd confirm it first.

If you are going to space it off the wall (recommended) then you do want to rip it off. Spacing it off the wall with the FRK on the back defeats the purpose.

[Getafix]

Ok i must have misinterpreted what i read then! I'll rip it off on the panels that go on the first reflection points & leave it on for the other traps. Thanks!

[Getafix]

Ok just completed building 6 frames for my traps. Two 2" one's for the first reflection points & four 4" one's for the front & rear wall.

Next step is to build some 4" frames for the wall/ceiling corners. I'll be using two slabs of 703 for this, so i was wondering which side the FRK should be facing on both slabs?

Some pics, sorry took them from my phone so not that great:

Front wall:


Rear Wall:


Side wall:


P.S. Is the middle of the front wall also an important area to treat? I often read about the center of the back wall which i've already covered. Not so sure if the same goes for the front wall or if i'm better off focusing on tri corners & wall/ceiling corners.

P.S.S. I also had an idea of cutting up two slabs (3.25 feet) into half so that i can cover more of the wall ceiling corner. This would make them around 1.625 feet in width (19.5 inches) & four feet in length. Is this a good idea or should i just stick to a normal 3.25 wide trap.

[Glenn Kuras]

Next step is to build some 4" frames for the wall/ceiling corners. I'll be using two slabs of 703 for this, so i was wondering which side the FRK should be facing on both slabs?

The FRK needs to face into the room. For the piece of 703 on the back you need to peal off the FRK. There should only be FRK on the face of the panel, not in the middle.

Glenn

[Getafix]

Thanks for the reply Glenn you're very helpful! So its generally of to put up bass traps with FRK in any location other than the first reflection points? Any specific places where they are recommended?

I don't want to end up with too dead of a room, though the room is quite large.

[Getafix]

Well i guess i'll answer my own question about placement of FRK faced panels.

I made two 4" panels & tried putting them behind my monitors & moved the existing panels to the back wall.

I tried listening to some music & the high end was just too bright & unnatural for me. So i ended up moving everything back again.

So as far as my room is concerned, i guess i prefer not having any FRK on the panels on the front wall.

I'm going to keep on adding some traps & report back here! With every trap i put in i feel the sound improving substantially. Everything is clearer & i'm hearing more accurate bass.

I wish i had an omni-directional mic so i could take some measurements!

[Getafix]

Hey guys,

Well i've got two panels left & i want to use them in the best place possible. So i've got two options:

1) I can put them together to make one 4" trap that will go on the front wall right in front of my seating position.

2) I could make two 2" panels & put them up on the side walls a bit further behind my mixing position. Which area would you guys suggest is more important to deal with?

Here is what the room's looking like now (i still have to put up a cloud above my mixing position):

Rear wall:


Front wall:

[Getafix]

Anyone?

[Glenn Kuras]

I would put them in the early reflection points around the mix. What Are Early Reflection Points. SPOTLIGHT:Bob Ebeling - Revolution Studio