Home Tweakers' Asylum

Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

[ Follow Ups ] Thread: [ Display  All  Email ] [ Tweakers' Asylum ]
[ Alert Moderator ] [ Edit ] [ Delete ]

Re: Not quite true…

12.149.8.201

Springs do isolate but that isolation is frequency dependent.

I understood this. A good audio "spring" will start operatining (i.e. acting as a filter) at very low frequencies. If 1 or 2Hz becomes an issue, we're probably talking about an earthquake and audio considerations will no doubt rapidly become inconsequential.
;-}

The point I was trying to make was to counter the suggestion that cones provide isolation due to the small contact surface. Which brings us to...

...My feeling is that the smaller the contact area, the more the lower frequencies have difficulty entering the cone.

With cones (or spikes, etc) between a shelf and a component, if you cause the shelf to move vertically at a very low frequency, the rigidity of the cone will pass this motion to the component, regardless of how small the contact surface is. It is the rigidity that passes the vibration.

This is easily demonstrable by raising and lowering the shelf in your hands (as similarly pointed out by Doug Blackburn in his excellenct "The Myth of the Cone Footer". The component will match the motion of the shelf exactly.

There may well be benefits to using cones or at least they may provide a change in sonics the listener appreciates. I do not however, believe isolation from low frequencies is the reason.


This post is made possible by the generous support of people like you and our sponsors:
  Atma-Sphere Music Systems, Inc.  

Follow Ups Full Thread
Follow Ups
You can not post to an archived thread.

[ Top Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2025, Audio Asylum, all rights reserved ]
[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]