Field loudspeaker of John Iverson.

Hello.

I read some audio magazines advertisement and found this promo of the first issue of Audio Forum magazine 1977:

The AUDIO FORUM is for YOU! In our first issue:

John Iverson (Electra Research) on: The Force Field Loud-speaker". (With NO moving parts!).

So I am very interested to find it to reed.

Also, I am interesting on any info and photos on ionic AHL Tolteque electrode system from CES 1990. Were the electrodes all wire or with flat panels?

I would be grateful for any help to find and share the information about them.

Best regards.