Professional tweeter from JBL. Since it is designed to make sound fly far away, the sound quality is solid and more straight compared to the company's consumer model 077. The mid to high frequencies is vivid, and the low frequencies are finished with a tight sound. There are some stains on the exterior and yellow rust on the metal parts. Serial 124074/124079 (Murakoshi Yoichi)
Maintenance information: 2023.5.2 sound output confirmed
Accessories: none
Main specifications: horn type tweeter impedance 16 ohms playback frequency band 6,500 to 21,500 Hz crossover 7 kHz efficiency 105 dB W100 x D84 mm 3 kg/book