TK device, TPU.. Only enter if you seek truth. Cause here it is...

[scratchrobot]

Red used what seems a pile of big speaker magnets? He also used 5 microwave capacitors in series, if I had them i would do the experiment myself.

[verpies]

Red used what seems a pile of big speaker magnets?

That is much more likely. Generally, these ceramic magnets are much cheaper, larger and provide much lower flux density than NdFeB magnets.
Also, ceramic magnets are electrically non-conductive and have low magnetic permeability, thus they are not limited by the skin effect.

Finally, some ceramic formulations may contain beta emitters.

[slapper]

could be magnets from a magnetron out of microwave ovens.
the ones i have read about 1 meg ohm depending where i'm at on the surface.
any ideas as to what they are made of?

but they seem to be smaller than the ones in mustafa's images and videos.
the image looks closer to speaker magnets i have.
the speaker magnets i've extracted have no measurable conductivity anywhere.

wonder what cергей b. was referring to in his reply to elementSix with the neos.

[verpies]

could be magnets from a magnetron out of microwave ovens.
the ones i have read about 1 meg ohm depending where i'm at on the surface.
any ideas as to what they are made of?
...the speaker magnets i've extracted have no measurable conductivity anywhere.

Those ceramic magnets could be made out of:
a) Strontium Ferrite
b) Barium Ferrite
c) Cobalt Ferrite

Speaker magnets are usually case b.
Some types of ferrite can be differentiated by their color, hardness, resistivity, coercivity, remanence, Curie temp. and density.
Most likely simple acid tests can be performed to chemically determine strontium/barium/cobalt content.
I don't know all of their properties by heart, so more research is in order.

but they seem to be smaller than the ones in Mustafa's images and videos. The image looks closer to speaker magnets i have.

Too small diameter or improper direction of magnetization will disqualify many magnets for this application.
It is a safer bet to choose larger magnets, that are magnetized "through the thickness"

wonder what Cергей B. was referring to in his reply to elementSix with the neos.

Perhaps he thought that stronger magnets are always better. It is not always so.

@yfree
I wonder which ceramic magnet composition (cobalt/barium/strontium ferrite) would be more amendable to the hypothesized "beta multiplication" ?

[yfree]

...
but they seem to be smaller than the ones in mustafa's images and videos.
the image looks closer to speaker magnets i have.
the speaker magnets i've extracted have no measurable conductivity anywhere.

wonder what cергей b. was referring to in his reply to elementSix with the neos.

As far as I know, the image of the magnet comes from RED, not Mustafa.
There are no images or videos from Mustafa, as yet.
The schematic of Mustafa's device was drawn by FreeEnergyInfo (Antanas) on the basis of a conversation with him.
Magnets are not mentioned there, just two transformers.