Like Imaninatural above, I bought ADS L710s in 1980. I had saved enough money from my first decently-paying job to replace a KLH model 5 (the portable one) that had been stolen from me three years before. Kept them more than 30 years before trading them in at Echo Audio here in Portland for a pair of used Harbeth M30s. Thanks for the post.
Who uses ADS Speakers
I worked at ADS in The late 70s and Find they are one of the best home speakers ever.
I always loved their accuracy.