There is no problem with operation, but since there are wrinkles and dents on the center cap, it is inexpensive and sold as is. Gauss 10" unit. It looks like the model used for guitar amplifiers, etc., but the details are unknown. Stains and dullness are conspicuous on the exterior (Oikawa Tetsuji)
Maintenance information: 2022.12.29 storefront operation confirmed
Main specifications: 10 inches, 8 ohms, outer diameter, 265 mm, height: 130 mm, 7.2 kg (actual measurement)