2. analog
  3. 167379-151430

How to isolate turntable from footstep shake or vibration

Even while the Oracle turnable that I use has a built-in springs suspension by design there is a low or even sub-low frequency boom every time someone walks in a room. This becomes really bad with the subwoofer’s volume set high as the low frequency footsteps make straight to subwoofer where they are amplified shaking everything around. It seems the cartridge is picking up the footsteps very efficiently as even a lightest foot down becomes audioable. What can be done to attempt to isolate the turntable from the low frequency vibrations? Interesting, that the lower the volume of the subwoofer, the less the footstep shake is evident and with the subwoofer turned off it is a barely a problem at all. 
esputnix

Showing 2 responses by pindac

pindac's avatar
pindac
2,475 posts
 
There is discussions within the ongoing thread,
'Upper Level Vintage DD Strenghts and Weaknesses', that has information that might be useful to your inquiry,
 What can be done to attempt to isolate the turntable from the low frequency vibrations?


pindac's avatar
pindac
2,475 posts
 
There is also another condition that might be the cause of the Sub Woofers exuberance.
The Condition if present will be quite easy to resolve, as it simply means checking the Earth Connections are at the correct termination points and ensuring they are clamped effectively.
I refer to this as it has happened to myself on occasion over many years, and very recently as well, when I working with a Selection of Phon's SUT's and Head Amp's 

An Incorrectly Earthed Vinyl chain can produce effects that manifest through the Bass of the Speakers.
When I am trialling with Phon's and Ancillaries, I have at times got the Earth connections incorrect at the time of exchanging.
An incorrect Earth even though not being a Audible Hum, can react to activity around it and produce noticeable Bass Cone Movement.   
More to discover