Acoustic Research AR-3a Speaker Dome Midrange Driver OEM Vintage – Working READ. See our store for additional AR-3a parts and other Acoustic Research components from the same set. Tested before removal from cabinet; working. Single mid-driver speaker with screws only. Speaker Face: 5.75. Front Panel Depth: 1.5. Front Panel Screw Distance: 4. Standard signs of use. May have cosmetic wear and/or scuffs. Dent on center of metal cover. See photos for more detail. Includes only what is pictured. Does not include any additional components. R2v3 CATEGORY C4/F4 NON-DATA.