Acoustic Foam Kits

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eraos

eraos

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I guess this is where this question goes.

How effective are the commercial acoustic foam kits?
Like this one on ebay

The company says the NRC, overall, is 0.88.

Would something like that be okay to buy? Or would it not be recommended?

I don't think I've ever seen acoustic foam kits discussed on this site, which is my reason for asking this question.

Thanks
 
> How effective are the commercial acoustic foam kits?... Like this one on ebay <

That particular brand is not effective at all.

> The company says the NRC, overall, is 0.88. <

They lie. Yes, really. I measured that brand in a real acoustics lab, and the absorption measured was about 1/3 what they claim.

> I don't think I've ever seen acoustic foam kits discussed on this site <

A lot of the DIY types here prefer rigid fiberglass because it costs less than foam (good foam, anyway), and is usually more effective.

--Ethan
 
Thank you for the response, definitely wasn't the answer I was hoping for :D but very helpful.

I had been looking at DIY stuff, but I was hoping I could get away with buying something.
 
I just spent 37 dollars with these guys......even if it turns out to be good for nothing but packing foam. :p ;) :rolleyes:

I'm also building those damn 703 panels! :D
 
I got one of their 48pks for my vocal booth, the stuff works pretty good. The booth was a small bit roomy sounding before I put up the foam, now its dead, no fluter, I'm satisfied. :D
 
It depends on what you plan to use it for. If you're just looking to knock down some flutter echos and kill your first reflection points, they work reasonably well.
I would say if you don't want or have the means to build your own OC703 panels, the 3" pyramid foam panels are a good option considering how much cheaper they are than Auralex and for this application they work well enough.
Keep in mind that ANY foam quickly becomes ineffective as your frequencies decrease, so too much foam results in all the highs being absorbed and low mids/bass frequencies still bouncing around like crazy.
 
reshp1 said:
I would say if you don't want or have the means to build your own OC703 panels, the 3" pyramid foam panels are a good option considering how much cheaper they are than Auralex and for this application they work well enough.
Click to expand...
This gives the impression that OC703 panels require some sort of skill or special tools to build, which they don't. In fact for apartment dwellers OC703 panels are better. The reason is that foam is usually installed using spray adhesive, which makes it a mess and trouble when it is time to move out. OC703 is hung like a picture, and thus is no more complicated than a picture when it comes time to move.
 
Innovations said:
This gives the impression that OC703 panels require some sort of skill or special tools to build, which they don't. In fact for apartment dwellers OC703 panels are better. The reason is that foam is usually installed using spray adhesive, which makes it a mess and trouble when it is time to move out. OC703 is hung like a picture, and thus is no more complicated than a picture when it comes time to move.
Click to expand...

Well, OC703/rockwool isn't universally available in small quantities, hence the "Sticky" thread about where to get it. This is especially true outside the US. Also, with shipping, OC703 isn't cheap either.
I still think 703 the best option, but for whatever reason you can't go that route the fake foam actually does a nice job for knocking down high frequency reflections.
 
Well, my situation is that my primary room is my garage, which, as it turns out, is literally the only square room in the whole house.
So one half of the garage is mine, so to speak, and the other half is for when we need to put the car in here or whatever.
And half of my half is taken up by my drumset.

So I think I have a pretty bad space to work with.
And I'm not sure how to help the acoustics with out having to put up some partitions.

studio.JPG
 
> I had been looking at DIY stuff, but I was hoping I could get away with buying something. <

For the complete story see my Acoustics FAQ:

www.ethanwiner.com/acoustics.html

It's a lot to read, but it's very thorough.

--Ethan
 
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