This is a pretty rare pair of vintage Koss CM/1020 speakers. If you're a Koss collector, I'm sure you know the 1010, 1020 and 1030 model line. They sound really good but probably need more power than my living room system can deliver. I've installed new dust caps on the drivers and tried DeOxit on the 3 way switches on one speaker. At present, the mid switches in both speakers seem to be working fine. The tweeter switches seem to only turn the tweeter on or off. I simply keep them all on. 3 way switches are easily replaceable. I think also the crossover network could use some new capacitors as bass seems a bit lacking. Wood cabinets are in fantastic condition as are the grill covers (not shown). These cabinets are well known to have been made by a famous clock maker in Holland, Michigan.