Ah thanks. Interesting.

Finally, an uglier planar than the Abyss.

 

If it amounts to half the weight without sonic compromises, I dig.

Regarding push-pull vs. single sided in real world applications:

People were convinced the Abyss' diaphragm would be out of control before they even heard it; this just isn't so from my experience. The sonic benefits of single sided orthos have been very real to me on the other hand.

The Audez'e Fazor is a solution that tries to bridge the gap, is it not?

Re: the HE-1000:
I'm curious if the HE-1000 really started life as the e-stat they were working on, and they just discovered along the way that planar magnetics were easier to manage for them. The 300B amp they were going to pair w/ their stat seems to be tailored for the HE-1000 now. Also they look the same.

Otherwise they may just share resources? Ie. their "nanu-nanu diaphragm" research.

The difference between single and double sided planars has nothing to do with uncontroled bass.
Also it isn't one side that merely pushes, it pulls as well.

1 side pushes and pulls depending on the audio signals polarity which constantly varies between + and -.

The 'problem' with single sided planars is that the larger the excursion the less linear it becomes.
When the membrane moves away from magnets on the rear side (so closer to the ears) the fieldstrength of the magnets becomes less and thus compresses the excursion towards the ear.
When the membrane moves closer to the magnets (so away from the ear) the fieldstrength of the magnet increases (relatively) and thus the mebrane is pulled more towards the magnet.
This creates a sine-wave that is non-linear meaning it is 'expanded' to one side of a sinewave and 'compressed' to the other side of the sinewave.
The effect is very small but there and simply is distortion and small signals on top of larger (low frequency ones) are modulated in the lower frequencies (grain ?)

With double sided the linearity isn't compromised.
This is because when the membrane is pushed to one side in a lesser force the same membrane is pulled upon harder towards that side by the opposite magnet.
This ensures better linearity.
It has nothing to do with 'control' or 'grip' nor 'damping factor'.
Damping is achieved by holes between the magnets, the skin and pads complinance and possible damping materials as well as the tension and 'stretchabilities' of the membrane.

The linearity is only really a problem on a higher SPL and isn't much of a problem when playing at moderate levels.

Basically (non linear) distortion increases more with higher levels in single sided planars.

I 'suspect' that the thin magnets on the ear side are more powerfull/size than the bigger ones in the back and so will create an 'about equally' strong magnetic field.
Perhaps the thin magnet bars are MUCH more expensive.
Even if it is not the case (magnetic field strenghts being about equal) than still there is the benefit of a better linearity.

Bass reproduction will mostly depend on the pads and 'leakage', doesn't have anything to do with the magnetic field strenght at all.
Only the overall efficiency will change providing the membrane and distance to magnets is the same.