DIY speaker isolation base for a wood floor

The person with no skin in this game is feeling no angst. The one with angst is the one desperately trying to appear relevant while the rest of us are going "Geoff who?".


I mean why else would someone describe a somewhat simple but effective concept of using spring mechanisms both in compression and extension, the extension implemented as a flexure (the negative term in Minus) as "much more complex"?   The use of the tunable flexure giving significant benefits but not that complex. The whole isolation mechanism certainly has some complexity, but the underlying principle ... Not at all.


I am glad I am your favourite. Everyone needs a muse.

Let your fingers do the walking. 🚶🏻See link below for diagram and description of negative stiffness. Simple springs, on the other hand, are just that - simple. Simple and elegant. You are not my muse. You’re my stalker.

http://www.6moons.com/audioreviews/minusk/platform.html

“Give the right spring and I can isolate the world.” - Machina Dynamica

The video "lost" me, as in lost any respect I had when they started talking about seismic coupling into the speaker impacting micro-detail. The spectrum of background vibrations is predominantly <10Hz, pretty much nothing >100Hz for starters.  Surface area of a speaker maybe 10 square feet? Surface area of room walls, ceiling, floor = 1000 square feet. If those microvibrations are anywhere near audible, it's too late, your room is already a giant speaker for them. If you think the movement in these frequencies and amplitudes of the cabinet impacts the "detail" of the drivers, then your head is going to explode when you think about that mid-woofer trying to play say a 1Khz tone while that mid-woofer is experiencing comparatively large subsonic and sonic motion from your turntable (let alone from the music itself).

Got a good laugh out of claiming the cabinet does not move in one sentence to claiming large floor coupling the next. Which is it?   Could acoustic coupling be a primary mode of coupling to the floor ... after all, where is the energy coupled, to the cabinet or to the air?

select-hifi246 posts12-18-2019 9:57pm mijostyn

In my humble opinion you are wrong regarding the use of Spikes,

https://www.youtube.com/watch?v=dW9-r83IvhI

You are right, you don't need a muse, you need an inner voice. You seem to be missing one. Sure, when I want to learn about "negative-K" isolation basics, of course I am going to go to 6-moons, the well accepted authority on vibration isolation .... :-)

How about the actual website of the MFR where the system is broken down to show that conceptually it is very simple. The completed system looks complex due to the multi-axis nature of the completed assembly. The basics ... quite simple:

https://www.minusk.com/content/technology/how-it-works_passive_vibration_isolator.html

You say yes, I say no. You say stop, I say go. You say hello, I say goodbye.