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In Reply to: RE: Some insight needed for points/footers. posted by stehno on December 10, 2014 at 20:36:32
It might be that the bamboo thing, coupled on spikes, is quite resonant, and so the decoupling stops the resonance from getting into the PLC ;)
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But it also might be little more than grasping at straws too.
For example, if you decouple (isolate) the component from the shelf, then what difference does it matter what you do with the shelf / rack?
The rack in and of itself is nonmusical (is not part of the music info processing chain. Therefore, so long as the component is isolated from the rack, what difference does it make if the rack is coupled or decoupled or if the rack even exists at all. Why not use a bowl of Jell-o or a box of kitty litter or your grandma's antique coffee table or whatever?
But since the suggestion was made to "decouple" the component from the shelf, do you really think you've just isolated that component from all unwanted vibrations simultaneously? Including the captured air-borne and internally-generated vibrations (e.g. power supplies, motors, etc)?
All air-borne and especially internally-generated vibrations captured at the component is a continual bombardment. So now that you've isolated your component from the shelf, where do you suppose all those unwanted vibrations going to go?
The answer is nowhere. By isolationg the component from the shelf, you've just severed the vibrations only means of escape. Now they are for sure trapped within the chassis and now they have no choice but to fully dissipate within. Which is essentially the same dilema as using soft component footers.
I agree with you. Hence the ;) on the end of my post. But also I bought a few bamboo boards, of different types, and found them all pretty resonant.
Why not just use spikes from the plc into the floor. Can't see what adding a bamboo board would do to help. And I have tried both myself. (But only these crappy non-audiophile resonant bamboo boards that I have).
Sorry for my delayed response.
Not sure how best to answer your question since I don't know what a PLC is.
Look at it this way. It's guaranteed that unwanted mechanical vibrations will continually bombard your components. primarily the air-borne and internally-generated, including the internally-generated where the loose or flimsy component pieces e.g. a less secured top plate are actually vibrating in sympathy with vibrations already captured and hence making matters worse.
Forget about floor-borne vibrations as you should assume they are already heading back to ground via the sub-floor to the foundation, etc.
Now your component is saturated with continuous mechanical vibrations. Your only hope is to provide a superior mechanical conduit that provides an expedited exit path for that unwanted energy to travel and escape and with little or no opportunity to bottleneck.
Best way to think about this is to consider the best quality table lamp you could possible construct. You have an electrical outlet, wall plug, wire, switch, socket, and bulb and all the connections in between.
What's gonna' happen to the performance of that lamp if there is just one loose or sloppy connection?
Depending on how sloppy the connection the quality of light can suffer immensely, the lightbulb's MTBF will greatly shorten, and if really sloppy, burn your house to the ground.
There is no reason to think otherwise when it comes to creating a superior mechanical conduit that is intended to allow mechanical energy to freely travel, which it is wont to do.
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