a review here with a telephone number (from the UK); however, the article's 5 or 6 years old.
There doesn't seem to be an official website, but apparently the local french tourist office has arranged trips to their factory, so you might want to pop off an e-mail to see if you can get an official phone number or web page.
Info from a translated web page below:
LEISURES Visits at Rehdeko
The Office of tourism of the Country of Montbeliard organizes, within the framework of Tuesday of reception, a visit discovered of the Rehdeko Company, manufactures of top-of-the-range speakers with Bavans. INSEA (national Institute of the exact sciences and complicated) in Scala de Milau, of Faurecia in the national Center of music electroacoustic), GEC Alsthom with the Opera of Paris, Jacques Higelin to professor Tomatis, Paul Messanger in Jerry Hadley, larger virtuosos with most severe of the journalists, more enthusiastic amateurs in concerts to the most impassioned music lovers, all is filled with enthusiasm and has of Rehdeko. In 32 years, the Rehdeko enclosures became the world reference of musical realism. They obtained a great number of high distinctions such as "Award of the best sound", "Hifi choici recommanded", "Reference monitor loudspeaker", etc. Rehdeko manufacture also obtained, officially, several tens of patents, in the USA, in Canada, in Germany, in England, in many other European countries, and even with Japan, single exploit in annals of the French hifi! One can be registered by contacting the Office of tourism of the Country of Montbeliard to the 03.81.94.45.60. The appointment is to 2 p.m. Tuesday at the Rehdeko Company located at the 34, street of the Cherry trees with Bavans.
There doesn't seem to be an official website, but apparently the local french tourist office has arranged trips to their factory, so you might want to pop off an e-mail to see if you can get an official phone number or web page.
Info from a translated web page below:
LEISURES Visits at Rehdeko
The Office of tourism of the Country of Montbeliard organizes, within the framework of Tuesday of reception, a visit discovered of the Rehdeko Company, manufactures of top-of-the-range speakers with Bavans. INSEA (national Institute of the exact sciences and complicated) in Scala de Milau, of Faurecia in the national Center of music electroacoustic), GEC Alsthom with the Opera of Paris, Jacques Higelin to professor Tomatis, Paul Messanger in Jerry Hadley, larger virtuosos with most severe of the journalists, more enthusiastic amateurs in concerts to the most impassioned music lovers, all is filled with enthusiasm and has of Rehdeko. In 32 years, the Rehdeko enclosures became the world reference of musical realism. They obtained a great number of high distinctions such as "Award of the best sound", "Hifi choici recommanded", "Reference monitor loudspeaker", etc. Rehdeko manufacture also obtained, officially, several tens of patents, in the USA, in Canada, in Germany, in England, in many other European countries, and even with Japan, single exploit in annals of the French hifi! One can be registered by contacting the Office of tourism of the Country of Montbeliard to the 03.81.94.45.60. The appointment is to 2 p.m. Tuesday at the Rehdeko Company located at the 34, street of the Cherry trees with Bavans.