Any inputs on Sony's APS (Acurate Pistonic Motion) 3 way Speaker)

[frend2001]

Hi FMs,

Any inputs on Sony's APM (Acurate Pistonic Motion) 3-way Speaker.

I've auditioned them and am impressed with the highs, very crisp.

Please give inputs.

It's serious money he's asking for them.

image : http://img.canuckaudiomart.com/uploads/large/455542-sony_apm_717_speakers.jpg

 

[Sumanta]

In my 3 years stay in Japan I have seen such speakers, and one probably was picked by friend from flea market, but didn't give much importance to them.

Please explain technologies behind this.
I am not helping you here, rather seeking information (help) to know about various designs of speakers.