Acoustic Research AR-3a Front Wired Tweeter Speaker 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 tweeter speaker with screws only. Frame diameter: 4.75. Depth of speaker (front of frame to back of coil): 1. Standard signs of use. May have cosmetic wear and/or scuffs. Broken section and cracked part of plastic frame (broken piece is included). See photos for more detail. Includes only what is pictured. Does not include any additional components. R2v3 CATEGORY C3/F4 NON-DATA.