Maintained! Woofer unit used in A5. It is a 38cm Alnico magnet, and the open sound is truly Altec. As for the exterior, the cork around the frame has deteriorated (Mizusaki Ryo)
Maintenance information: 2024.4.28 Maintained (edge holes repaired with rubber adhesive, edge wood chips removed, center cap removed and dustproof net glued, magnetic circuit slit cleaned, rust prevention, coil bobbin center removal)
Accessories: none
Main specifications: 38cm cone woofer unit impedance 16 ohms output sound pressure level 104 dB 12.4 kg