This pair of speakers were what my father used as his sound system they have been refoamed and they sound amazing. Vintage 1980s pair of ROR Speaker System D speakers for sale. Cosmetics: Black finish cabinetry featuring scuff marks and discoloration spots, particularly on the top side of each speaker. Refer to the photos for closeups. Speaker grills, made of cloth & wood, are excellent. Made in USA by Acoustic Research Inc. Each speaker measures 10″ X 10″ X 13.5.