Working just needs a refoam. The Needs Refoam Acoustic Research AR2ax (late) Speakers 10 Woofer is a vintage audio component from the United States brand Acoustic Research. The AR-2AX model is known for its high-quality sound and is sought after by collectors of vintage speakers. This particular woofer, with a 10 size, is an essential part of creating a complete and authentic vintage audio setup for those looking to experience classic music through a retro lens.