Bruno Gest has been at it for over 25 years and I have spent an inordinate amount of time there in the 80s, investigating drivers, buying samples and components or just listening to the wonderful contraptions Bruno and his team created month after month.
At that stage, they were very much into horns and Fostex drivers, but also keen suppliers of drivers and kits from Audax and Siare, then Focal, and now Atohm, PHL Audio and Davis Acoustics.
I had met Herve Breton on the Atohm stand in 2010, but didn't get a chance to visit the Paris store. In October 2011, I was not going to miss out again...Situated in the 11th arrondissement  at 138 Avenue Parmentier, you can find here a very large assortment of drivers, primarily of high efficiency or/and full range variety, components like inductances, capacitors and resistors as well as accessories like wires, connectors, vents, and also full kits to build your own speakers.
In one word, this is the Ali Baba cavern of the speaker DIYer, and also a plave where one can discuss designs, tricks of the trade or simply share a good listening session and enjoy the camaraderie and the knowledge of the people which is the trademark of the place.
Luckily enough on the day of my visit, Bruno walked in about 15mns after me, and once we had reconnected, Bruno surprised me with two things: one, a smaller version of our Microphase SATs that we thought we would market years ago, and two, amazingly a very rare prototype of our SATs, as we probably made 10 pairs to test the waters before going full speed. Bruno had bought them back from a client - I thought I had given him a pair at the time, but not...
Note the smaller cabinet, the off the shelf drivers and vent, and the first order crossover. also the cabinet maker could not make the chanfreined cabinet, so you can see the edge of the plywood on each corner.
Although quite elegant, it is nothing compared to the shear beauty and perfection of the final cabinets manufactured for us by Jean-Paul Guy of GUY HF in Bourbon-Lancy, now part of the Focal empire!

30 years ago...this idea of a satelite and separate subwoofer was in the air!
Interestingly enough, I had no recollection of this speaker, the first offering of Renaud de Vergnette under the now famous Triangle brand, which is distributed all around the World, including here in Australia (by Audio Active Australia in Melbourne...walking distance from my day's job office in South Melbourne!).
I have found no technical information on this product released in 1983, one year before we were to introduce our own Microphase system.
What we can derive from the picture, is that the satelite is a two-way system with a cabinet that attempt to reduce standing waves AND achieve time alignement at the same time. It looks like there is also a down firing woofer.
The satelite has a much bigger volume than our SATs, but the subwoofer seems very similar in size, probably using a 17cm woofer as well.
If anybody has any more information on these speakers, feel free to tell us in the "comments"
I am trying to visit Triangle in October, and hopefullly find out more about this quite neat design.
I cannot resit but to photographically list a few more similar designs thast have appeared here and there over the years from Davis Acoustics, Wilson Audio and others. Feel free to add to the Collection!