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 Post subject: Re: Acoustic hangers
PostPosted: Wed May 20, 2009 4:21 am 
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Joined: Fri Mar 06, 2009 12:17 am
Posts: 25
Location: Borculo, Netherlands
Hi John and all of you.

A attached some pictures of the hangers I made for the studio I designed.
There are seven on each site. 2.5 Meters high and the width varies from 30 cm till 75 cm.
I'll hope that's enough....
Don't mind the HVAC outlets hanging there. They gonna be mounted in the ceiling.
In the middle comes a diffuser.


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 Post subject: Re: Acoustic hangers
PostPosted: Wed May 20, 2009 7:30 am 
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Joined: Sun Aug 29, 2004 12:14 am
Posts: 116
Location: Sweden
Hi all, thanks for the....(I hope).............Sticky to be!!!!
Two and a half question-statement(s), only to stimulate all you experienced people on this forum to share your visdom once again!

Q1
Wouldn't a RealTrap work as a hanger if arranged in the same way?
(Ethan, have you tried to place them like hangers?)
Q2
Would it be possible that the soft particle board is selected only due to its low density but still strong enough as a core supporting hanging assemby and to carry fluffy insulation glued to it?

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 Post subject: Re: Acoustic hangers
PostPosted: Mon May 25, 2009 1:40 pm 
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Location: southern Maine, USA
Hi Kaj,

Interesting idea. I've never personally had much luck with the hanger method. I've definitely never tried using MiniTraps as bass hangers. My suspicion is that it wouldn't work. The normal bass hanger design uses a rigid surface, with absorbent around each side. This is basically a gobo. The MiniTraps are velocity absorbers, which require sound to pass through it.

It'd be interesting to test this out, though....

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 Post subject: Re: Acoustic hangers
PostPosted: Mon May 25, 2009 2:45 pm 
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Joined: Sat Dec 29, 2007 1:37 am
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Location: Santiago de Chile
John
Is it possible to use Styrofoam/Expanded Polystyrene/EPS or whatever you call it there instead of the homosote? I cant find something like that here.
Maybe Homosote is similar to OSB ?

If not. what else?

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 Post subject: Re: Acoustic hangers
PostPosted: Mon May 25, 2009 3:33 pm 
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I reckon the close equivalent would be heavy packing cardboard, maybe two sheets glued together as homosote is made from recycled paper.


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 Post subject: Re: Acoustic hangers
PostPosted: Thu May 28, 2009 2:34 am 
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Cool
I'll get some heavy cardboard then...

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 Post subject: Re: Acoustic hangers
PostPosted: Tue Jun 30, 2009 5:39 am 
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Location: Borculo, Netherlands
Hi All,

I've placed my acoustic hangers and diffuser in the back. (See above.)
But when I'm on he mix position, I have (too)much sub low and when I listening in the back of the room there's none...zero...sub low. :?: :?:

Somebody any ideas why there is no sub low in the back of the room?
Too much trapping????


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 Post subject: Re: Acoustic hangers
PostPosted: Tue Jun 30, 2009 9:14 am 
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It appears you have a standing wave between the front and rear of the room. The diffusor won't have any effect on the low frequencies so it just bounces the lows back at you. Try removing it.


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 Post subject: Re: Acoustic hangers
PostPosted: Wed Jul 01, 2009 7:07 pm 
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Joined: Fri Mar 06, 2009 12:17 am
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Location: Borculo, Netherlands
Thanks John.
That must be it, standing waves. :oops:
I'm going to measure the room Friday.

What's the best way to treat a standing wave?


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 Post subject: Re: Acoustic hangers
PostPosted: Thu Jul 02, 2009 2:23 am 
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Location: Santiago de Chile
John.
Hangers seem to not happening here.
I managed to purchase heavy cardboard but they are really small sheets. Even tho they are kinf of hard. they are nothing like homosote since they are "hollow" (a corrugated "S" sheet of carboard sandwiched by two rigid carboards, and x2). So Im guessing the density and resonance its not even close to a solid, pressed sheet of recycled paper like homosote.
Can you think of another replacement?
Or send me some homosote sheets to Chile :mrgreen:

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 Post subject: Re: Acoustic hangers
PostPosted: Thu Jul 02, 2009 7:49 am 
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micmic wrote:

What's the best way to treat a standing wave?


In your case just had heavy absorption across the rear wall instead of the diffusor


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 Post subject: Re: Acoustic hangers
PostPosted: Thu Jul 02, 2009 8:05 am 
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jb - The product is Pinnacle - Tackboard.

http://www.pinnacleboard.com/

If you can't get that just use 1/4" OSB or similar.


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 Post subject: Re: Acoustic hangers
PostPosted: Thu Jul 02, 2009 4:15 pm 
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What about CORK ???

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 Post subject: Re: Acoustic hangers
PostPosted: Thu Jul 02, 2009 5:11 pm 
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yeah - good suggestion. When I started out in recording in the 60s cork was our version of 703. We'd line walls with it for acoustic treatment.


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 Post subject: Re: Acoustic hangers
PostPosted: Sat Jul 04, 2009 2:40 am 
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Ouchh..
A small sheet of cork ( 0.9 x 0.5 meters), at 1 cm thick.. is about $22 usd !!!
Cork here seems to be very expensive!! And we don't have large sheets like osb or drywall.. just those smal ones

Something doesnt want me to build hangers it seems . hee

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