From what I could learn they were made in the mid 1980's. Price for ES-10 new about $1300. Found one sold about 5 years ago $500. They supposedly sound best if positioned in the corners. Not much info as the company has been gone for around 30 years.
Kevek Speakers
I recently came into possession of a pair of Kevek ES.10 in like new condition. Any idea what they're worth, or what they originally sold for? I could be persuaded to sell, as they're a bit large for my NYC apartment. Thanks!