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In Reply to: RE: Honestly, Stu... posted by stehno on April 05, 2015 at 13:39:10
Within the audiophile realm, the notion of vibration isolation is ubiquitous and often misleading. However, the most notorious ignorance concerns the term vibration control for audiophile purposes. Vibration control devices and methods should be implemented as tools to manipulate resonances rather than try to treat them like an enemy. Compliant materials such as polymers/silicone can be a very valuable tool for system tuning purposes, especially when implemented with non-compliant material devices such as cones, discs, balls. IME, shifting the resonant characteristics of an audio device is the paramount objective rather than vibration deadening, or dubious vibration isolation approaches.
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I like your summation. I firmly believe as you do that resonance control is manipulating the frequencies which are offending and perhaps transmuting them to more audibly pleasant ones.
Why a=waste the energy being generated? I find that using them is more effective in the long run
Thanks for your kind response, unclestu.
I should clarify that I find vibration damping to be a vital aspect of vibration control, but it's not the only goal. An experiment years ago with a wooden cutting board implemented for a DIY vibration control platform helped shape my perspective when it comes to vibration deadening vs. resonance manipulation. The cutting board featured a deep groove routed around the surface edge on one side of the board intended as a juice channel. It occurred to me that the groove could be filled with Blue-Tack for vibration damping purposes. It was amazing how bad the board sounded after filling the groove, so out the Blue-Tack went. Simple compliant footers positioned under the board, sounded much more musical as a result, with further vibration control devices placed between the top of the board and the component placed upon it.
Cheers, Duster
Many years ago, when I first tried bamboo cutting boards under lightweight digital gear (pro dacs and work clocks), it was a "holy smokes!" moment. Even something so lightweight could make a world of discernible difference....
I find the essential sonic signature of laminated bamboo boards to be an interesting thing to work with. In and of itself, laminated bamboo does not produce an interesting sound, but it behaves well as a plinth to provide a neutral sounding, non-compliant/rigid layer for compliant pads/footers to work against without adding coloration of its own. An impression of resonance dissipation seems to be involved in the presentation, IME. It's similar to carbon fiber composites in that matter. I find carbon fiber composites to sound intrinsically transparent compared to other non-compliant materials such as resonant metals or woods for vibration control purposes.
YMMV
I should have stated that the lightweight gear, of course, simply rested on the bamboo cutting boards via their rubber feet....nothing aftermarket.
What occurred was an overall gain in clarity without any change in tonality....much in keeping with your sonic descriptions. Considering that the smallest boards cost around $5 or $6, it WAS the proverbial bargain. And they were purdy....
"Vibration control devices and methods should be implemented as tools to manipulate resonances rather than try to treat them like an enemy."
Care to share an example of your manipulations of resonant characteristics is undeniably the one and only solution to cure or absolutely minimize distortions induced by under-controlled vibrations?
If so, please don't quote your buddy Herbie again as we've already gone down that path and without success.
BTW, how is vibration deadening any different from isolation? On paper, doesn't a dead vibration only result from isolation or damping?
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