Townshend Seismic Podiums

I didn't like the floating nature pods for floor standing speakers, and I have my turntable on a Townshend platform which works great.

For speakers however, I put mine on top of solid, multi layer platforms that drain the internal speaker vibrations/distortion to the floor, in my case a suspended wood floor where this type set up works best because of how the platform drains the noise to the floor. You can also put the platforms on top of roller blocks for more isolation if you want, but then you get that floating effect.

Check out Symposium audio - they have different levels of platforms and you can talk to the owner Peter about your situation - he is very helpful and sensitive to budgetary needs and probably has come across your exact situation in his 29 years in the business doing the same thing. 

@flaxxer - Not all things measurable are audible, and not all things audible are measurable. It's a good start, but not the be all and end all.

When I say "draining" vibrations, of course they don't disappear, they dissipate through multiple levels within a platform, one being foam, which absorbs some of it and vibrations then go from the platform to the floor (which is why wood is better than concrete or other hard surfaces).

The speaker needs to have maximal contact with the platform to be effective - no spikes, discs or whatever in between. Like I said, you can put pods or spikes under the platform for more isolation, but the key with speakers is eliminating internal vibrations, just like with amps and phono stages, CD players, etc.

The improvement in sound from the speaker with the platforms was immediately apparent. Better clarity and separation by eliminating the noise created by vibrations. Better separation of voices for example, more precise bass response, and more like live music.

An alternative to pods are roller blocks which have ball bearings inside housings that move in the xy plane giving things on top of them the floating effect like springs do, but with no resonance and no adjusting, so long as it is in the weight range for them to be effective. Because the top of therm are flat, they also do vibration transfer, and having them be on top of wood is optimal.