DIY speaker isolation base for a wood floor

There is a video posted above by select of the Townsend isolation system 4 speakers. That is a good example David damped spring system.  Well I find the video of it cheesy you can see that that system not only isolates the speaker from the floor but also helps to dampen cabinet vibrations.

Wow there us some good points brought up here with passion behind them. Look I do appreciate the gusto behind your arguments and lets keep it respectful. There has to be someone who has access to the right measuring devices. Where is a college physics major who is writing his thesis when you need them? This would be great for a class debate with the tools needed in the same building. 

audiozenology"Wrt Clearthink’s post on just adding mass"

That is not even remotely what I said so I do not know why you would claim, argue, or assert that I had you maybe should consider actually quoting those with whom towards you seek to engage in argument here is exactly what I wrote:

"𝐁𝐞𝐟𝐨𝐫𝐞 𝐢𝐬𝐨𝐥𝐚𝐭𝐢𝐨𝐧 𝐈 𝐰𝐨𝐮𝐥𝐝 𝐭𝐫𝐲 𝐭𝐨 𝐥𝐨𝐚𝐝 𝐰𝐢𝐭𝐡 𝐦𝐚𝐬𝐬 𝐟𝐢𝐫𝐬𝐭"

Using mass "first" does not mean using mass "only" but I suspect you already understand that.

Someone is being argumentative again. The springs don’t oscillate while music is playing. Don’t push down on the springs when the music is playing. That is the same silly argument people use for granite, that is rings when you strike it will a metal object. Well, don’t strike it with a metal object while the music is playing. Duh!

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.