Detailed operation of the QUAD ESL63

So would it be possible to see the impedance zoomed in from 1k too 20k?
Sure thing. I changed the "No Bias" curve to dashed so it can be seen on top of the "With Bias"
ESLZ_Vbias_on-off_Zmag_Zoom.png
 
It makes a sturdier bottom and top plate. The sides is a different matter.
My change to long, metric thread connections of the top/bottom to the sides were intended to increase the connection strength between the two. Not sure how much it matters, but it seems better now. My top and bottom plates are 3D printed reinforced ABS. And in my ESL 31.5 design the top/bottom plates are only 400mm wide so there's less flex anyway. We'll see.
But I really want to measure if there is a change, and to what effect.

Jan
 
The cables are 75cm long (less than a meter) and the amps sit next to the speakers.
The main reason to keep the cables short is to limit the parasitic capacitance that would consume some of the output current.

It is beyond me why people get all excited about a few kV in a cable. There's no fundamental difference between +5V en 5kV - it's only a matter of scale. Adapt the isolation and Bob's your uncle. And make it red of course, that seems to scare people anyway.

Jan
 

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