There are always multiple Salk speakers for sale used on Audio Circle as owners move up the line. Probably your best bet to find out if they are for you as the original owner is going to take the hit and you could sell them for little loss if not for you. As to whether they will work with the Leben you need to call Jim and talk to him.
Salk Audio Sound
Looking ( still ) for new speakers to replace old Spendors ( with a Leben tube amplifier). Had narrowed my search to Devore Super 9, Proac D30R, Sonist Concerto 4 when the itch to save some money cropped up ( two tuitions due this week). Have been hearing about Salk. Some have denigrated as "hifi"- ish; whatever that means. Seems like a great value and certainly has his following. Unfortunately, can't find them to hear for myself. So are the Salk speakers on par with the other possibilities above?