Here is a pair of Sound Dynamics Concert Monitor 500 speakers in very good condition. They are a two way design with a 10" woofer. The woofers have just been refoamed. These use the Sound Dynamics aluminum horn tweeter, which is very well regarded. Two pairs are available. The other pair is listed separately. I'd sell both pairs for $400. May be auditioned. Gear serviced RIGHT. Care taken and no half fixes. Quality new parts used. See my other ads for vintage audio/guitar equipment.