※Only 1 genuine diaphragm for TD-4001 has been measured DCR7.5Ω and has been checked for conductivity. This is a valuable beryllium diaphragm. Please use it as a replacement (Kojima Yosuke)
Maintenance information: 2024.1.9 continuity, resistance checked
Accessories: original box
Key Specifications: Beryllium Diaphragm 600 to 20,000 Hz Recommended crossover frequency 600 Hz