Do equipment stands have an impact on electronics?


Mechanical grounding or isolation from vibration has been a hot topic as of late.  Many know from experience that footers, stands and other vibration technologies impact things that vibrate a lot like speakers, subs or even listening rooms (my recent experience with an "Energy room").  The question is does it have merit when it comes to electronics and if so why?  Are there plausible explanations for their effect on electronics or suggested measurement paradigms to document such an effect?
agear
dlcockrum
... My lead-and-sand-filled rigid-steel Sound Anchors component stand sits on cones atop my home’s concrete slab foundation and I can easily feel vibration sympathetic with the sound by placing my hand on the stand.
Really? That's simply amazing! Are you talking about just low frequencies here, or do the sympathetic vibrations feel like they span a wider range?


When energy is applied to soft spongy materials that are used in combinations with springs supporting a loudspeaker, everything supported remains in a state of continuous motion. By doing so, this negates the operational efficiency of a voice coil as the coil itself becomes subjected to this secondary flexing. Ultimately, the voice coil drives the entire speaker assembly and has to overcome the added inertia presented by the motion of the springs and soft materials upon which the cabinet rests. The constant motion and flexing with this type of isolation device manifests inefficiencies within the operational design of the voice coil. Tom. Star Sound Technologies
"Really? That's simply amazing! Are you talking about just low frequencies here, or do the sympathetic vibrations feel like they span a wider range?"

Hi cleeds,

My "hand test" is not calibrated. lol

Yes, The deep bass frequencies do generate more perceivable vibration into the stand, but I think some of the harmonics of string instruments and drums transmit also.

High volumes are required to feel this.  I have my Thiel CS5i's and dual REL Stadium III subs spiked to the concrete slab as well, so lots of low bass (and other) frequencies are being transmitted into the concrete.

I should point out that here in Texas, we have "trampoline" foundations whereby steel rebar cables are laid and put under tension   within the foundation prior to pouring the concrete in order to allow the foundation to move with the soil. Perhaps the scientists involved here can posit on the effects of this "trampoline" on vibration transmission.

Best to you cleeds,
Dave 
Theaudiotweak wrote,

"When energy is applied to soft spongy materials that are used in combinations with springs supporting a loudspeaker, everything supported remains in a state of continuous motion. By doing so, this negates the operational efficiency of a voice coil as the coil itself becomes subjected to this secondary flexing. Ultimately, the voice coil drives the entire speaker assembly and has to overcome the added inertia presented by the motion of the springs and soft materials upon which the cabinet rests. The constant motion and flexing with this type of isolation device manifests inefficiencies within the operational design of the voice coil."

i have been preaching pretty much the same thing, I.e., use only very hard materials for interfacing with iso systems. I actually don't know of any isolation devices that employ soft spongy material with springs but maybe there are some, who knows? This concept of soft spongy materials is somewhat related to the idea that one should not use spring type systems in series, for example arbitrarily using a spring-based iso device with a turntable with springy or rubbery feet. I have constructed dual layer mass-spring systems but certain precautions must be designed in to prevent interactions between layers.
Actually that’s not true. But that’s what a troll would say. Maybe time to head to the library, eh? Of you’re looking for data you need look no further than the fact more than 10,000 audiophiles have purchased Vibraplane isolation. Oh, wait I almost forgot. You’re a skeptic that cannot be convinced of anything. You probably think it’s paranormal or group hypnosis. To be so skeptical about vibration isolation, you know, 20 years after the introduction of vitbration isolation to audiophiles doesn’t really reflect well on your progress in this hobby. You call yourself Ag Ear but can you even hear?
That's not proof of concept.  Since you cannot generate a valid argument or data, maybe having just one of the 10,000 philes chime in on their experiences.  We have heard your jingles one too many times.  Yawn....