1976 Original Bose 4.5″ Full Range Speakers Pair For Bose 301 501 601 Series
• Brand: Bose • Type: Full-Range Speaker Drivers (Pair) • Date Code: Oct 14, 1976 • Diameter: ~4.5 inches (measured cone-to-cone) • DC Resistance (Measured): ~0.41–0.42 Ω (likely 1 Ω nominal voice coil impedance, may have been part of multi-driver array) • Condition: Used — dust caps intact, foam surrounds show age and wear • Markings: “BOSE” stamped on dust cap, part number on magnet appears to start with 107441