Pair. Teledyne Acoustic Research (custom rebuilt). 2 new silk dome tweeters Alesis type 1". 2 Dayton Classic 10" treated cone woofers, Butyl surround 8 ohm. Audio Pro update crossover design, Rev 4. All new drivers. With vintage correct performance for this cabinet. Added fiberglass damping layers. Modern voicing more present bold but good. Vinyl walnut cabinet with dark brown grills.