Alnico 10cm unit by Onkyo whose details are unknown. The fixed edge and thin paper cone are a nice touch. Since the wire with the faststone terminal comes out of the terminal, it seems that it was attached to the system (Murakoshi Yoichi)
Maintenance information: 2022.11.1 sound output confirmed
Accessories: none
Main specifications: impedance 8Ω rated input 1W screw pitch (diagonal) 117 mm external dimensions 102 x 102 mm depth 51 mm 202 g