Boy, Oh Boy! Towshend!

Starting the experimentation is the key, finding a material of permutation of materials that are perceived as a time well spent and a noticeable improvement over the previous used will be the reward.

Great post!

Your experiment correlate with mine to some degree...

I used what i called a "sandwich" under my speakers which are on my desk and the same sandwich with dac and amplifier...

Quartz feet,granite plate,sorbothane in between, another granite plate, cork plate, bamboo plate...

This improve the sound quality...

BUT,

It was not enough....And i was not conscious of what was missing..... 😊

I used then 2 set of 4 boxes springs, one set of 4 under the speaker over the sandwich, another set over the speaker, under a fine tuned damping load of concrete ( 78 pounds)...
The essential point is the application of a dyssimetric compressive force between the 2 sets of springs which are then compressed with a different load....This decrease the negative effect of resonance of the rectangular enclosure....I was inspired by the " building tuned mass damping" principle....


Results : Amazing....On all acoustic count, timbre, bass, high frequencies....

Cost: under 100 bucks....

I had another idea about this to improve it , i must wait for another experiment in the week to come....


I dont think that those who cannot afford costly method must renounce isolation.... Isolation control is mandatory....

@vinylshadow - if you can, post a picture of those items you are specifically talking about on a system page. Something about a picture says a thousand words... I’m not even suggesting your whole system if it’s an issue, just that which you are enquiring about.

Using the same type of Isolation that has been used under a Shelve/Sub Plinth and used as footer separating a Device from the Shelve/Sub Plinth Material has shown more meaningful and noticeable changes to a Devices performance.

Yes!

I also trial with Tiers of materials to produce a Shelve/Sub Plinth and MDF has not found its way as go to material in these permutations either.
It has been a long time since MDF has been trialed so I can’t quite recollect why it was not desired, but any material that I perceive as
Bass Heavy Footed is rejected by myself, as this in my mind is smearing the details and suppressing the Mid’s to Highs of the frequency range.

MDF laminated to steel plate - ever try that? It’s good. HDF laminated to steel plate, is even better.

I have produced a Sub Plinth, that consists of a Material used under Laboritory Floors to absorb Micro Vibrations, this is Multi Tiered and has produced two Piers to a Height of 500mm.

I don’t care if you PM me with it, I just have to learn what it is ... please??

@rixthetrick

Thanks but I wasn’t able to figure that out.
But if you go to imgur dot com slash a slash FEI0zPQ pics are on im gur.
If you are able to, you’ll see the 300 pound Sound Anchors rack and the Basis turntable. But I’m adding a 2nd to the left of the center speaker.
Then you can see 1 of my speakers on the spikes/disc and a Rowland Model 12 behind it. Also on a spiked Sound Anchors amp stand.
Hope that helps!

@rixthetrick
I am home from todays social get together with Friends meeting and HiFi at the centre.
I made a mistake about the Electrostatics, the Footers are not the Gaia model but the IsoAcoustic Pods.
The Gaias are under the SP10R.
My HiFi Racks are now seated on a 1100mm X 750mm X 12mm (43" x 29" x 1/2") Steel Plate.
The Base Plate has Two Footers of Granite 1000mm x 100mm x 150mm (39x4x6), with a Hard Foam Board and a Rubber to separate the steel from the granite.
This is the only place I have used Steel Plate on the System.
I know of a German Forum Member who has access to extremely expensive HiFi Devices and he uses 40mm Thick Stainless Steel Plinths under his SUT’s.
The Anti Vibration Material is a Industial Material and I was given it by the Company Installing it.
The Manager informed me it is regularly installed by them when sensitve equipment is to be used in rooms, in this case Laboratories.
I took a selection of Slabs, ranging from 100mm, 75mm and 30mm.
I used these from a Single layer and built up to the 500mm.
As said as soon as the Amp’s were supported the improvement was quite noticeable.
The 500mm Height was produced as the Amp’s started to look a little more attractive when elevated and at near eye level.
I will get the Brand name of the Product as the Company that uses it are
still met regularly.