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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.Β 
esputnix
isochronism
2,893 posts
 
thecarpathian, if the bridge DID collapse, we guess you be crushed and out of a home. πŸ˜„πŸ‘
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thecarpathian
4,487 posts
 
I find it amusing that you are doing exactly what you infer I am.πŸ˜„ πŸ‘
antigrunge2
1,418 posts
 
Townshend Seismic sink or wall-mounted (assuming solid rather than plasterboard walls)
lewm
13,118 posts
 
MC, You might be correct about the cause of the bridge collapse. I mentioned it more for the sake of humor than anything else, and my guess is or was that the resonant frequency of the bridge suspension(s) and the wind velocity had something to do with it. But I certainly did not back up my remark by actually researching the cause. If you look at the famous video of the bridge shaking itself to death, it appears that the suspensions, one on each side of the bridge expanse, are resonating at different frequencies, which causes the road bed to be twisting and tilting so crazily, which eventually led to disaster. I dunno.
Anyway, we all agree that putting a turntable with a built in spring suspension on top of a spring-suspended shelf is usually not a good idea, unless the doer has a good understanding of the physics and the proper instruments to determine what might work.Β  This is not a knock on spring suspensions per se.
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