TW Raven Owners: Set Up Questions

My apartment has solid concrete floor with tension
cable runnig through them.

This is called a
'prestressed' concrete floor and is designed to allow greater spans between
supports, with thinner floor thicknesses.
It is achieved by reducing the amount of steel reinforcing in the slab and
substituting steel cables (within permanent sleeves) which then are post-
tensioned.......after the concrete has initially cured.
It essentially pre-cambers the concrete slab so that the 'dead load' brings it
back to horizontal.
These slabs are becoming more like 'membranes' and because of the spans
they allow.....can actually bounce?
With the right equipment one can hear the structure 'singing' or 'moaning'?
They are possibly the worst type of floors on which to mount audio
equipment....particularly turntables?
If the outer brick wall is non-load bearing.....it must be supported either on
the floor itself or a concrete beam structure spanning between supporting
columns?
If the latter.....it is less prone to movement than the prestressed floor and
fixing a wall-mount shelf to it (as close to a column as possible)....will be
preferable.

Say what?

I am very confident that 3-5 Shakti Stones below, Shakti Online, teleportation tweak, liquid ceramic cables, clever clocks or brilliant pebbles will raise the table far above ultimate level.

Shakti stone will take away air not a good tweak.

Ebm, it's engineering and Halcro sounds like an architect. I understand about these prestressed concrete slabs. They are thin, and do flex, but they don't break under the design load. Think of a very hard, yet bouncy web. I imagine that they could even ring under certain loads.

Suteetat's apartment floor slab does not at all behave like a thick concrete slab on the ground. Whether or not a wall shelf would be better in his situation, I can not say.