Do equipment stands have an impact on electronics?

Audiopoint wrote,

Questions to ponder:

Q - Do the audible effects from a more dense wood reduce the sonic signature that vibrating wood adds in a sound room?

A - Maple generally sounds "good" better than many materials yet is not particularly dense. Going one step further materials like hardwoods that vibrate when excited by external forces are not necessarily bad for the sound inasmuch as the wood, maple or whatever acts like a resonator, dissipating the vibration in the rack or stand. Similarly stand or racks that are less rigid than others can actually sound better since seismic type vibration will not be transmitted quite so easily as rigid structures. Thus, the popularity of the Flexy Rack, for example. Isolation effectiveness is a function of how easily a stand or rack can move in the direction of interest. A flexible, or wobbly stand would approximate or approach the behavior of mass on spring systems, one might observe.

Q - Do denser woods actually sound more musical or are we hearing less colorations or noise? Keep in mind we are listening to a block of wood vibrate in a listening room environment and not that of a spruce inlay on a tuned up Martin guitar.

A - Density is not the most desirable characteristic of the material, otherwise maple wouldn’t sound so good. It’s a medium density wood. Let’s look at Moingo as in Mpingo disc for a second, which IIRC is African rosewood, a rather dense wood AND it resonates like a son of a gun. Yet, used sparingly, it’s very good for the sound. A resonator? You decide.

By the way, I would like to see Graphene used more widely in audio applications. Graphene is now used in fuses and high end tennis racquets since it’s *extremely* strong and lightweight. How about tonearms, cartridges, iso platforms....hmmmmmm.

Geoff Kait
machina dynamica

What's the shear modulus of graphene?

theaudiotweak
1,370 posts
10-07-2016 5:06pm
What’s the shear modulus of graphene?

Depending on some variables like geometry, direction and temperature about 0.4 TPa.

The top model of the Codia rack line uses resonators on the bottom of each shelf. It is the BAB model. It is expensive, but I don't suppose they could charge so much if it wasn't really good.

Here is a description of what I did some years ago...

            Massive and rigid speaker stands are much in vogue today, precipitated by the desire to minimize relative motion of the speaker and listener. I have largely overcome this relative motion by mounting the speaker stands directly into the granitic bedrock underlying the listening building. An expanse of about two acres of solid granite was selected as the site for the listening building and all topsoil was removed from the area. Four mounting holes for the stands of each speaker were then drilled to a depth of seven feet into the bedrock and stainless steel supports were press fit into the drill holes. Glues and cements were rejected as interfering with coupling of the stands and bedrock; instead, the supports were cooled to cryogenic temperatures to shrink them. Expansion locked the supports in place as they warmed to room temperature. Speakers sit atop the supports on diamond points. I am currently contemplating the use of large counterweights from a drawbridge to clamp the speakers securely to the supports.

 

            Despite the considerable attention given to speaker movement, no provisions have heretofore been made for isolating the listener's head. As "all motion is relative", I elected to purchase a head and jaw clamp assembly from a retiring brain surgeon. This is mounted to bedrock as described above and provides a secure and stable support for the listener's head. An ancillary benefit is that it completely prevents any jaw motion during serious listening, thereby eliminating changes in the shape of the ear canal documented by psychoacoustic studies.