For Sale is a Pair of Vintage Acoustic Research AR 208 HO 2-Way Bookshelf Speakers with Matching Serial #’s. Tested and they sound great and are in very nice condition. Tweeter : 1 Polycell Tweeter. Mid Bass Woofer : 8. Dimensions: 18.25″ tall x 10.5″ wide x 12 deep each speaker. Weight: 22 pounds each speaker.