Yamaha's unknown full range unit. Constructed with traditional paper cones and corrugated edges. It uses a large magnet and makes a crisp sound. Specifications such as frequency bands are unknown (Murakoshi Yoichi)
Maintenance information: 2025.11.16 sound output confirmed
Accessories: none
Main specifications: 8Ω, 30W, diameter: 206mm, depth: 80mm, 1.5 kg