DIY damping paint?

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FrankDIY

FrankDIY

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Joined 2001
#1
My question might be stupid or funny but anyway 🙂 As you may know, I am building a clone of the Arro and I noticed that Totem uses a borosilicate paint to damp the inside of the box. I did not find this stuff but I am wondering if a can use a similar product (like paint) or if I can create a similar product. And here is my funny question, what do you think about mixing normal white paint (oil based) and sand or other similar stuff in order to paint the inside box with that "black magic" paint. Sand with glue? Plastic finish paint with glass?

If I am crazy :spin:, please suggest me other normal product.
 
#2
You don't sound crazy at all. Is the paint purely a texture or as you said, dampening? It may be better to use rubberized rocker guard paint for cars [going to have to try that now! -- I hope you are happy], mixed with sand. That would give you the rough surface and hopefully the ability to dampen at least certain frequencies.

Alvaius
 
#7
What about that spray on bedliner for trucks? Or is that what you mean by rocker gaurd. I think some if it has a lot of texture to it, like sand or something in it. You can also buy it at Crappy Tire so its easy to find.

Cheers,

Jeremy:scratch:
 
#8
I used roofing tar and sand -- this was on my first set of KEF B139/B110/T27 reflex enclosures. I still have the speakers and they weigh a ton! I was wondering what "bituminous felt" was -- so I used tarpaper.

I once built a set of cabinets of particle board, then set them on their sides and poured concrete (quikrete -- about 1/2 inch using brads as anchors), let it set and dry, then did the other side. These speakers had the resonance of a brick of lead. Unfortunately I had to break them up with a sledge hammer when we moved to NJ from LI about 20 years ago.
 
#12
François said:
borosilicate paint to damp
Click to expand...

I don't believe it actually damps the panels, but stiffens them up, and then the sand particles with their random distribution, further break up the resonant signature of the panels. You want something that soaks into the outer layer of the wood -- i use polyurethane, mix some clean, dry sand (or use the water based stuff), and you will be close.

dave
 
#13
There are two types of rocker guard paint, one dries hard, and the other stays tacky. I would go for the hard drying one, the stickier one may give better damping, but I would be worried about the smell, not to mention the outgassing effecting the speaker surrounds.
 
#15
Pink,

In the US, the panel just below the doors is called the "rocker" panel. In the northeren climates, particularly in cities that use salt to melt the snow on the roads, the rocker panels used to rust out pretty fast unless you had some rocker gaurd coating.😉

Rodd Yamashita
 
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