I was fortunate to find a healthy communication with the Materials Tester, who, to my knowledge, was the Godfather of the concept of using Panzerholz and later Permali for audio-related purposes.
This individual was introduced to a tough time from within a forum for making available measured DF and Dissipation for a large selection of materials used as A structure within audio.
My relationship with them developed to the point that I was sending material squares to undergo testing.
Through this person and their shared content, I was to learn a substantial amount about recorded DF / Dissipation readings for a large range of materials typically seen as purposed for audio applications.
I was mixing materials and footers - tiers of materials and footers for a very long time and was all the better for the learning I had.
Panzerholz came later, as it was not a cheap option; to get on top of costs, Boards were imported from Germany and then cut down in a local machine shop to the dimensions required. This allowed for both Plinth and Sub Plinths to be utilised.
Using Panzerholz superseded all that was used before and remains today in use as a Multi-Tier Sub Plinth and a TT's Plinth.
This period of learning has left indelible pointers to be followed, of which one has been, for one to not assume they can predict a DF/Dissipation of a material because it is thought as being understandable without a science to support the pith being presented
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