Found this info, but no technical specs yet.
"Jennings Research was based in Los Angeles, California, USA and founded in March, 1975 by Tom Jennings. Mr Jennings had been the head of marketing for JBL in the late 60’s, early 70’s and was instrumental in the success of the JBL Aquarius series. In a different time he was also CEO of Wald Sound.
As it is with most driven entrepreneurs, Jennings stuck out on his own, brought in a dedicated group of talented associates and made some amazing speakers. The initial product line at Jennings Research was called the “Contrara Group”. At the top of the line was the "Contrara Elan Pedestal" with twin Audax tweeters and Audax woofers. Next up was the "Contrara Group Pedestal", which features twin woofers and a single tweeter.
Also included in the model series were the "Contrara Group MKii Rectangles" which had single woofers and tweeters in each cabinet. Other than the high quality drivers and crossover networks, the most striking thing is their physical appearance: all the Contrara Group pedestal systems feature hand-rubbed, solid dark walnut cabinets with mosaic tops. The Rectangles have the same high quality finish but without the mosaic tops. The pedestal models also have very heavy cabinets mounted on swivel bases which is quite unique, to say the least.
There were a few other speaker models, not as well known but still carrying the Jennings Research badges. They were introduced in the summer of 1975 and the company initially made quite a splash with an advertising campaign in national magazines such as "Popular Science" and the "New Yorker Magazine".
The well-designed systems sold well, but, unfortunately, the very high cost of materials and labor, let alone the cost of marketing and sales, put Jennings Research in a precarious position compared to the well-funded competition. There was no question the product is excellent but, as happened to so many companies in the crowded high fidelity market, they just couldn't stay afloat. Occasionally, Jennings Research speakers turn up for sale but are considered very rare because, generally speaking, they sound VERY good and most audiophiles tend to consider these "keepers".
The company also introduced a line of amplifiers the next year, but they appear to have only been in production for only a couple of years."