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Gadget13769



Joined: 12/01/11
Posts: 107
Loc: West Midlands
New acoustic panels - air gap or no?...
      #1021365 - 29/11/12 12:01 PM
I have two new fibreglass panels (1150mm x 575mm x 50mm) to go on my back wall...

... so, following on from recent discussions elsewhere on the subject, will I see any real benefit from spacing the panels with a 50mm air gap from the wall? Or will this be so subtle in this case as that I might as well just fit them flush?

Discuss...


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Gadget13769



Joined: 12/01/11
Posts: 107
Loc: West Midlands
Re: New acoustic panels - air gap or no?... new [Re: Gadget13769]
      #1021366 - 29/11/12 12:08 PM
Here they are...



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Hugh RobjohnsAdministrator
SOS Technical Editor


Joined: 25/07/03
Posts: 22312
Loc: Worcestershire
Re: New acoustic panels - air gap or no?... new [Re: Gadget13769]
      #1021369 - 29/11/12 12:34 PM
Spacing them from the wall will extend the absorption to a lower frequency and it is worth doing if you can.

hugh

--------------------
Technical Editor, Sound On Sound


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GIK Acoustics



Joined: 05/09/12
Posts: 114
Loc: Atlanta, GA & Bradford, UK
Re: New acoustic panels - air gap or no?... new [Re: Hugh Robjohns]
      #1021484 - 30/11/12 04:50 AM
Quote Hugh Robjohns:

Spacing them from the wall will extend the absorption to a lower frequency and it is worth doing if you can.

hugh




+1. Though, two panels likely won't make a massive difference in the room. I would certainly suggest enough to hit the reflection points as well as some corner bass traps, and if its necessary, add from there.

--------------------
Alexander Reynolds
GIK Acoustics USA (770) 986 2789 | GIK Acoustics Europe +44 (0) 20 7558 8976 (UK)


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Gadget13769



Joined: 12/01/11
Posts: 107
Loc: West Midlands
Re: New acoustic panels - air gap or no?... new [Re: GIK Acoustics]
      #1021498 - 30/11/12 09:32 AM
Quote GIK Acoustics:

+1. Though, two panels likely won't make a massive difference in the room. I would certainly suggest enough to hit the reflection points as well as some corner bass traps, and if its necessary, add from there.




Indeed.

I already have two corner chunks to go in the back corners, two panels for the back side wall, two panels for left/right reflection points, two larger front corner chunks and a large ceiling cloud.

I'm also going to get a couple more panels to go behind the monitor speakers, a panel on the back angle of my console and possibly an angled panel between the front wall and ceiling.

This is the front of my room so far...



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sheggs



Joined: 16/12/08
Posts: 155
Loc: Bradford, UK
Re: New acoustic panels - air gap or no?... new [Re: Gadget13769]
      #1021552 - 30/11/12 12:25 PM
Looking Good

--------------------
David Shevyn General Manager GIK Acoustics Europe
www.gikacoustics.co.uk


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Gadget13769



Joined: 12/01/11
Posts: 107
Loc: West Midlands
Re: New acoustic panels - air gap or no?... new [Re: sheggs]
      #1023069 - 07/12/12 06:32 PM
Quote sheggs:

Looking Good




Thanks

So, to slightly alter the question...

If I'm now using 100mm of space from the wall (ie: 50mm panel + 50mm air gap), would I get better performance by just having a 100mm thick panel and no air gap?

(I realise 100mm panel + 100mm gap would be even better, but 100mm total is pretty much the maximum I can afford to use in this small room).


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Hugh RobjohnsAdministrator
SOS Technical Editor


Joined: 25/07/03
Posts: 22312
Loc: Worcestershire
Re: New acoustic panels - air gap or no?... new [Re: Gadget13769]
      #1023073 - 07/12/12 06:46 PM
Not really, and it would be a lot heavier and a lot more expensive.

H

--------------------
Technical Editor, Sound On Sound


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Gadget13769



Joined: 12/01/11
Posts: 107
Loc: West Midlands
Re: New acoustic panels - air gap or no?... new [Re: Hugh Robjohns]
      #1023075 - 07/12/12 06:56 PM
Quote Hugh Robjohns:

Not really, and it would be a lot heavier and a lot more expensive.

H




I can get the 100mm thick panels for about 1/3 more cost than for the 50mm, so the cost isn't prohibitive, but if there is no likely performance gain, then perhaps I should go with 50mm panel + 50mm air, as you suggest.

The weight isn't too bad. The panels I am using are fibreglass surrounded by 2mm MDF, so a 1150mm x 575mm x 50mm panel is only 3kg.

Edited by Gadget13769 (07/12/12 07:00 PM)


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GIK Acoustics



Joined: 05/09/12
Posts: 114
Loc: Atlanta, GA & Bradford, UK
Re: New acoustic panels - air gap or no?... new [Re: Gadget13769]
      #1023587 - 11/12/12 04:31 AM
Sorry Hugh but I must disagree. There is a significant difference between a 2" panel with a 2" gap and a 4" panel from what I've seen(especially in corners, for obvious reasons). And fiberglass/mineral wool isn't all too heavy anyways .

I recommend making 100mm thick panels as a minimum unless your goal is only to tame reflections.

--------------------
Alexander Reynolds
GIK Acoustics USA (770) 986 2789 | GIK Acoustics Europe +44 (0) 20 7558 8976 (UK)


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Gadget13769



Joined: 12/01/11
Posts: 107
Loc: West Midlands
Re: New acoustic panels - air gap or no?... new [Re: Gadget13769]
      #1025487 - 21/12/12 06:35 PM
*Update*

I have ordered 100mm thick panels for the back wall. I have used my 50mm panels on the side walls, with a small air gap... http://www.4x12.com/side_panels.html

I have also just put up a new page about my folding door bass trap... http://www.4x12.com/door_trap.html


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RitchieM



Joined: 18/06/10
Posts: 249
Loc: Skelmersdale, Lancashire
Re: New acoustic panels - air gap or no?... new [Re: Gadget13769]
      #1025522 - 22/12/12 12:40 AM
Wow!!!!!

That room looks amazing! I wouldn't get anything done, just sit in it with a sense of serenity and feeling of pride!

I don't think I can step into my own little box anymore, you have ruined me.



Ritchie

--------------------
Engineering Surveyor and Musician Pretty Vegas Northwest Function and Wedding Band
Wedding Band Blog


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