Home made equipment isolation platforms.......?

zanash said:
Come on chaps....if the cdp is attached to the mass then the mass is part of the cdp ....if the cdp is only sitting on the mass then its not attached and the mass is effectively part of the earth.
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Yes, it is attached to the mass; its possible this could be improved upon.

So perhapts its been a useful diiscussion....as members feel this is worth look into.
 
Wickfut said:
.........than any earthbound vibration that you think you are curing by using bits of wood and marbles.
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I think the 'bits of wood and marbles' work wonders under my power amp, and what's in there to vibrate :confused:

Ahhh maybe they have stopped external vibs entering...?
 
bob mccluckie said:
what you are doing is like flooring your room with cotton wool so you cant hear pins drop while you have a pneumatic drill running in the room next door

LOL
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FWIW....


"Most structural vibration is generated by the loudspeakers. The magnitude of this vibration depends on the volume the loudspeakers are reproducing; an increase in volume will excite more vibration in the structure of the room. This is true for both long loud sections of music and short high level bursts. Quiet sections of music are also affected because the room stores and then dissipates vibration after a preceding loud section has stopped. These changes in volume or transients are a fundamental part of all types of music."



like I say AFIIK its a black art ut the point of view is intersting I think.
 
Hey guys,

I'm well into balsa wood just now.




:boogie:





Its like hitting the nitrous button....

Honest!




(its renewable too :cool:)
 
Deaf Cat said:
C'mon C'mon Did you manage to get blocks of the nitrous :D, or flat sheets?

details details details :cool:
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weeeell...

origionally I picked up pack of balsa which was like a assortment...

...yesterday I went back for 1/4 inch (thick sheets)a 4 inches (i think/ could be 6) x 36 inches.

came it at £2 a go.
 
Hay now, whats more important, hoovering or playing with wood and stereo :D

4" stuff sounds (in theory) good.

I like the £2 bit :cool:
 
Deaf Cat said:
Hay now, whats more important, hoovering or playing with wood and stereo :D
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Need you ask?

Wood and stereo of course!

But thats the problem



;)




Deaf Cat said:
4" stuff sounds (in theory) good.

I like the £2 bit :cool:
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I did (also) e bay a bit from the west midlands

I'm just kinda wondering if I should be finding a better way of sourcing a rook of it :confused:

Still pretty good vfm at £2 though (locally).



:)
 
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I use Slate under my CD player. Managed to get a big slab off an old pool table which I cut down and sanded myself. They sit on squash balls and I've got one under my amp too
 
I've used Corian a little (but not for Hi-Fi), it machines very nicely and can be glued together really well - there is a lot of resin in Corian and much less stone than it may seem. It machines like a cross between MDF and aluminium - but closer to MDF (not at all unlike acrylic).
 
YNMOAN said:
I've used Corian a little (but not for Hi-Fi), it machines very nicely and can be glued together really well - there is a lot of resin in Corian and much less stone than it may seem. It machines like a cross between MDF and aluminium - but closer to MDF (not at all unlike acrylic).
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is it known to be good at absorbing vibrations?
 
Well its entirely rigid, so it's a crap 'absorber' of vibration, ie poor damper, but it's quite massy so the weight comes into play.
 
DavidF said:
...er no.

Tell me more!?
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Not sure I can cast much light unfortunately David; but I can tell you what is in my mind.

I have been working on a design for my equipment support that I think would be seen as fairly conventional - a shelf system isolated from the floor and probably including some kind of 'sound sink' on the sides to offer somewhere for energy to dissipate (a fancy way of describing a sheet of thinish ply fixed on thin bolts away from the sides to allow it to vibrate and use as much energy as possible but without getting too complicated).

Anyoldhow... so I was reading PC's guidance on enclosure material on the WDF and was particularly struck by his thoughts and research with one of the unis - was it Portsmouth? - on using mdf and chip board laminated to take the best of what each has to offer sonically.

One of the alternatives I have in mind is to stretch vinyl or leather over the finished shelves to further dampen them and to create a finish that would be aesthetically pleasing (to me, anyway).

Both mdf and chip board are wood fibre suspended in some kind of resin and seem to offer a synergy due to their structure giving no uninterrupted path to vibration and each having different resonant properties due to different size fibre and density. Corian is roughly described as minerals suspended in acrylic. I haven't any idea about its resonant properties except that when I struck it with my knuckles in a bathroom shop, it seemed 'dead'.

Dupont says: Corian® is an advanced composite of aluminium-tri-hydrate, pigments and acrylic resins (PMMA) developed as a practical solid surface material for residential and commercial applications. Corian® offers design versatility, function and durability. Supplied in sheets and shapes, it can
be fabricated with conventional woodworking tools into virtually any design.

My hope was that someone here has tried it and can say "forget it, it's hopeless", or "yes, rigid and light works well with source equipment but not worth the money for the rest of the system", or some such.

What do you think? :)
 

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