Cheap Speaker "Isolation" Solution for 300 lb. Speaker

teo_audio
Let’s try this again:

The thing that is closest to equivalence of final result (of 2 Hz) when using the diamond dampers, is a precision/lab grade anti-vibration wideband safe table.
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>>>>You realize how preposterous that sounds, right?

You added to my original screed, which maligned its interpretation and meaning. I said:

The thing that is closest to equivalence of final result when using the diamond dampers, is a precision/lab grade anti-vibration wideband safe table. Ie, indicating that the safe table, to compare with..should also be of a wideband nature, as in wide frequency bandwidth of isolation.

The natural tuning frequency of the dampers is 2hz. They move closer and closer to that ideal with regard to being a excellent lossy spring, as the load or mass per sq inch increases.

Which is the why of the recommendation of using a cone on the bottom of smaller lighter gear. More pressure in a smaller area, with the attendant curving in of the surface and material, toward the tip of the cone...which enables the same effect, with a lossy characteristic in multiple directions, instead of just the vertical.

If one pushes down on the corner of lets say a preamp, and the premap is on round tipped cones (read: not razor sharp), with the cone tips centered on the damping pads (large side of the cones blu-tacked to the preamp chassis), and then one lets go of the corner, they get pretty well one half cycle of motion in the preamp.

Or (to clarify), if one tries to ’bounce’ (Up-down, left-right, front-back) the preamp, in any way or any rate of acceleration, when it is on the damping pads (with said cones), they get pretty well just the single damped half cycle. (return to center)

Oh, I dunno, why try to emulate a spring when you can just use an actual spring. Springs maintain their performance and are scalable. If your diamond dampers are really so great how come LIGO doesn’t use them for isolation? 

There you go, Geoff.... purposely misrepresenting what was said. Projecting into and then calling me out on the projection. Easy now.....

How did I misrepresent what you said? I think I represented it quite well. It’s kind of hard to tell what you really mean sometimes, you know what with your way of speaking in puzzles and rhymes.

I am wondering if the, "O.P." ever had any luck. I have had the same problem with heavy speakers. Sorbothane "will" actually work. But you may want to contact the manufacturer directly for a baseline of recommended shapes, type/rating and etc.. "I have, several times". They were not difficult to work with. But their answers left me at times with just many more questions, especially upon further reflection.

I have used the (50/70) Durometer rated pads, (6" x 6") X 3pcs. at 1" thick. "Which brings the Natural Frequency down to about 10Hz. according to the manufacturer". 

"Or so I was told"

I was also told that these particular pads were orig. designed for autobody to chassis isolation. Which made sense. They came with documentation and were rated at (1500-2500Lbs.) per pad. "When calculating for this type of application the objects weight plus the, (Inertial force of mass, AT load), and also force vectoring must be taken into consideration". Not just a speaker's given "dead weight". Otherwise, the Sorbothane will tend to simply disintegrate during it's very brief and tortured lifespan.

Anyway, I achieved what I'll call, "Mixed Results" at best. I ended up placing all of the pads behind bass transducers in sealed cabinets which did work well at reducing resonance and interior reflections.