The RWO/Fostex Laboratory Series monitors were demonstrably superior to virtually all studio monitors of the day including JBL.
Checkout http://facebook.com/RWOFostex
Do you have a pair of these speakers? If so, treat them with respect. The huge problem with them is that after 30+ years there are no replacement parts available.
The drivers for the speakers were handmade and there are NO comparable units available today. If you blow a tweeter diaphragm, for example, you have just toasted the whole pair! :(
The recording studio market shifted dramatically in the last years with digital workstations predominating. Small self-powered "near-field" monitors now used almost exclusively (to the detriment of quality recordings IMHO!!)
They very rarely are listed but I cannot think of better performing monitors.
NB. If you have a pair that are "broken", I'd be interested in buying the parts to complete repairs on a couple units.