Bass distortion-Playing LP's only,,,,please help

Those panels generate an electrostatic field not a magnetic one. To generate powerful magnetic fields requires high current (magnetic flux is proportional to current).

The aforementioned field is also constrained within the stators.

Magneplanars would be a different story... ;)

Anything else?

Czarivey, it works wonderfully well, thank you for asking. ;^)

On the other hand it’s not entirely clear what is being asked as the question is somewhat nebulous?

The first argument was EMI based but now the goalposts have moved?

Are you asking about possible stray capacitance?

A possible potential gradient between an electrostatic loudspeaker stator and nearby objects?

Or, entering Dr Strange territory, “a quantum field relationship” between the elements of a hifi system? ;^)

OP, personally, I would tend to explore the rumble filter option last rather than first.

Have you tried messing with the sub-woofer bass contour controls? Mine are 4.5ft from the front wall but I still need a sizeable bass cut to avoid overwhelming the room. :)

The added benefit is that it stops the spikes and panel bolts from vibrating loose! ;^) :D

I think it’s a given that you probably visit the MLC website but if you do there will be plenty of good advice there as well.

Good luck!