CAPACITOR TEST - VERY SURPRISING RESULTS

[♔Chello]

I did one more test:
I removed the Planar membrane on the horn, and took the same measurements once more.

With Planar membrane:
   


Without Planar membrane:
   


The result was quite different; the impedance curve (red) shows a smoother course with less jagged lines, and the dips are a little stretched out with a softer character.
The impedance magnitude (blue) is markedly different, and this says something about how hard the amplifier has to work to drive the speaker at specific frequencies.
FS (free air resonance) is somewhat higher than with membrane.

So theoretically it seems as if my "patent" Planar membrane worsens the impedance course and the amplifier's working conditions - clearly.

The big (and only relevant) question, however, is:
How do the horns sound WITHOUT Planar membranes compared to WITH ?

SURPRISE...
Human voices no longer shrill.
Details (character) are very different - I hear a delicacy in the voice that I have not heard before.
At the same time, voices appear too thin; they lack fullness.
The double bass and details around the strings as well as the resonance in the bass's box are more pronounced.
Brush and drum details are much clearer.
Piano is also much clearer than before - TOO clear..?.
A strange thing is that I hear negative compression, much like with the Pa5X when too many effects are active at the same time, and it feels like there is too much reverb - human voices don't shrill anymore, but many instruments do; especially the piano.

A VERY surprising and shocking thing:
The perspective is MUCH worse, with a clear tendency towards stereo..!
And the dynamics are worse.

CONCLUSION..?
My Planar membranes are going back on..!
I'm going to try a thinner foil, because the one I used is a bit too thick, but easier to work with.
This foil is VERY difficult to stretch up, but I think this one could be a significant improvement.

My Planar membranes are superb in terms of perspective and dynamics, and I can (and must) tolerate slightly shrill human voices, when everything else works far better than without Planar membranes.

These measurements clearly show that theory and practice do not necessarily match, because ugly measurements can actually sound better, as in this case.

For comparison:
Measurements of a tube amplifier versus a transistor amplifier show that the tube amplifier has significant distortion, but it is still far superior to the other in terms of sound..!


So my invention Planar membranes does great things with perspective and dynamics - the JBL horns without these do not impress..!

A strange incident at the end:
When I removed the foil, compressed air came out - POOFFFHHH..!
I know that the horn driver is called a compression driver, but...

Maybe I should call them Compression Planar membranes..?