I noticed the Synthesis NS1M in the clearance section of harman audio's site.
Harman Audio - NS1M
The description is as follows :
The JBL Synthesis S1M theater and music speaker is a unique system that switches between two separate sets of speaker components for when the speaker is playing 2 channel music versus multi-channel movie soundtracks. This unique switching arrangement allows use of a controlled dispersion horn driver that is optimized for use when multiple channels are in use in Multi-channel or theater mode. The speaker system switches to a set of wide dispersion speaker components that are preferred if only the left and right front speakers are active in a two channel or Stereo playback, typical of serious music listening.
Crazy idea or a good compromise between home theater and stereo listening? It's different that's for sure. Don't think I've ever seen a design with a switchable driver arrangement before. Seeing as they're selling for ~ 20% of retail it appears they didn't sell so well.