Equipment Rack

Agear wrote,

"Diversionary answer. LIGO is irrelevant. How about a cheap bedspring for a violin endpin? Now that would make the music come to life."

LIGO this the most sensitive physics experiment in history! the gravity waves which it detected finally last year had amplitude the diameter of a neutron. If LIGO uses springs as opposed to some cones or spikes or other coupling devices then springs are require to achieve the experiment objectives.

agear also wrote,

"Since no one in the Audiogon ecosystem appears to be using your products, how about a pic of your own system unless of course its a lonely walkman as Monsieur Greene insinuated."

I have already stated many times I’m using a portable Sony Walkman CD player and Sony Walkman cassette player for my sources. Are you dense or just pretending to be dense? Hel-loo! I'm certainly not trying to hide it, on the contrary. Duh! Besides, Michael Green is a big proponent of low mass audio systems. He’s just jealous that mine is the lowest mass system around at only 10 ounces and much lower mass than anything he has been able to come up with.

agear
1,129 posts
09-15-2016 11:09pm
ps for those with good memories Machina Dynamica spring based platforms were highly desirable and much sought after back in the day on Vinyl Asylum, I’m sorry I did not get the chance to acquire one when they were available
You can always redeem the loss by snagging a teleportation tweak: http://www.machinadynamica.com/machina60.htm

Thanks for posting the link. I'm giving serious consideration to promoting you to associate shill.

agear
1,129 posts
09-15-2016 11:35pm
Geoffkait: LIGO this the most sensitive physics experiment in history! the gravity waves which it detected finally last year had amplitude the diameter of a neutron. If LIGO uses springs as opposed to some cones or spikes or other coupling devices then springs are require to achieve the experiment objectives.

To which agear responded,

"And the relevance of that in regards to audio is what? We are not measuring things but propagating energy. Again, a spring for a violin endpin? I think not. What have you actually measured in regards to your products and their performance or is it all quantum divination?"

the relevance to audio is that seismic vibration must be addressed in order to eliminate or attenuate external low frequency vibration where electrical and or optical components are involved, as they are in both LIGO and audio systems. For CD the nano nature of the data requires the laser beam to be relatively unaffected by low frequency vibration for optimum performance. One need look no further than turntable platters and tonearms and cartidges appreciate that low frequency seismic type vibration can excite the resonant frequencies of those items, resonant frequencies are circa 10 to 14 Hz, well below the frequencies of any vibration produced by the component or by acoustic waves. Follow?

I never suggested a spring for a violin endpin. Try to keep up with the discussion. It is very easy to calculate the effectiveness of isolation devices and you can find the resonant frequency manually for spring based devices. The effectiveness of a particular device depends on how well set up the device is, as I have already pointed out optimum performance depends on how the component is interfaced to the top plate and how the device itself is supported on the floor or table. Why audio magazines never measure the performance of iso devices is a good question as it’s not rocket science. There is no requirement for me personally to measure anything.

geoff kait
machina dynamica
no goats no glory

mains
3 posts
09-17-2016 5:12am
YOUTUBE Townshend audio How to isolate speakers from ground borne vibrations.

while it is probably true that the Townshend isolation devices prevent structural ground borne vibrations from getting up into the speakers wouldn’t the more important function of the Townshend iso devices be to prevent the speaker vibrations from getting down to the floor thus possibly producing what we generally refer to as acoustic breakthrough? Besides the speakers are going to be vibrating whilst playing anyway, so there’s not much the Townshend iso devices can do to alleviate that speaker vibration and it’s affect on the internal crossover, speaker input connectors, wiring, etc. inside the speakers, no?

Excerpt from Townshend website:

"Seismic Isolation Podium

Designed as a range to accommodate any size and weight of speaker – standmount plus stand, floorstander or subwoofer – the Seismic Podium breaks the acoustic connection between the floor and the speaker, preventing the passage of deleterious vibrations both to and from the speaker cabinets. For a detailed explanation of why this is an absolute necessity before any speaker can perform to its true potential, read ‘Earthquakes on hi-fi’."

Oleschool,

And speaking of school, education is what’s left after you forgot eveything you learnt in school.

cheers

The link that works is posted below. Apparently a hyperlink CAN have too many http's in it.

https://www.audiogon.com/listings/stands-machina-dynamica-bio-mikro-g-isolation-stand-2016-09-03-acc...

hifiman5
@geoffkait I am not trying to be at all snarky here, but is that eBay posting a gag of some sort. The pic looked to show a nicely crafted product but the write-up sounded like a comedy bit followed up by the dismissive questions. This whole thing may be well known to many but predates my recent involvement with the forum. Just wonderin’

Actually, it’s not an eBay listing, it’s an Audiogon listing for Machina Dynamica’s brand new isolation stand that mimics the biological capabilities of the woodpecker. The woodpecker is able to withstand very high negative g’s on the order of -1000 g whilst pecking wood, thus preventing brain damage or even death, because of unique biological characteristics of the tissue and bone surrounding it’s brain that absorb and dissipate the shock and vibration. The active material in the Bio Mikro G isolation stand is micro-scale glass beads that behave like the spongy tissue surrounding the woodpecker’s brain. And the bamboo mimics the bony material of the Mr. Woodpecker’s head.

Geoff Kait
machina dynamica
no goats no glory

hifiman5
@geoffkait My bad on the ebay listing instead of Audiogon. I just looked at the ad. again. Is the stand designed to support components within a certain range of mass? It looks like it could be applicable to supporting a large power regenerator like a PS Audio P10 or a sizable amplifier.

The dimensions of the top plate are 18x12 so the Bio Mikro G can isolate a range of components, from turntables to preamps to CD players to amps to power conditioners/power regenerators to small or medium size speakers. The Bio Mikro G is about two inches high and contains about 5 lb of glass microbeads below the top plate. All wood is bamboo. Viscoelastic feet support the stand.

Geoff Kait
machina dynamica