DIY speaker isolation base for a wood floor

I never said the spring would oscillate with music though with some of the platforms with their rubber springs they actually would. With a well chosen basic steel spring it will not. However as the op stated he found it wobbly and does not like it. Most don't find damped systems wobbly, to that end damping his spread would give most of the benefit of isolation you promote with a system they can live with. 


Granite would be excited by vibrations at higher frequency, but given the mass and relatively low energy at those frequencies it's not going to create audible issues.


The spring only system will not help to damp cabinet vibrations. Damped system will.


Blueranger, you may have a half decent measuring device in your hand right now. Your phone has a multi-axis accelerometer. There are programs for logging / testing. Bandwidth is limited but frequencies are usable.  I have a range of accelerometers in the lab, we can also do non contact, but for a speaker cabinet that is not really needed.

Twoleftears,


Note what I posted earlier in the thread. The primary coupling is acoustic. 

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?

Ethan Winer. Lots of laughs! 😃

Eureka!!!!! I have the answer!!! Suspend the speaker from the ceiling!!!! Case closed! Well NOT. Oh thanks foe the link. I have rad about half. Going back now