Everything from exterior painting to driver gap cleaning has been refreshed and maintained with attention to detail! ※There is a tear repair mark on the mid-bass cone on one side. The original 4343 by All Alnico, the original 4343 of 4343! An unbearable gray finish model with crisp low frequencies and punchy high frequencies. The dynamic sound typical of JBL has been revived due to maintenance. It is a famous monitor that can best reproduce sound sources recorded with on-microphone regardless of age or genre. Serial 16513 16199 (Murakoshi Yoichi)
Maintenance information: 2024.8.24 maintenance (one-sided mid-cone tear repair) 2019.4.14 maintained (terminal cleaning, insulation bushing and mounting screw replacement. ATT exchange. INT/EXT switch-over SW cleaning. A frequency characteristic measurement check (~ 42 kHz) was performed, the 10 ohm resistor for the tweeter on one side was replaced, and the original capacitor was continued to be used. Check the input/output waveform and balance, and check the sound output. Woofer maintenance (edge replacement). Midmaintenance (edge replacement). Driver maintenance (magnetic circuit gap cleaning/center adjustment, sound absorbing material replacement, screw replacement, terminal contact cleaning). Tweeter maintenance (magnetic circuit gap cleaning/center adjustment, screw replacement, terminal contact cleaning) exterior repair/gray paint. Front and rear baffle paint. Saran net replacement. Saran frame repair. Woofer midcone paper coating. Unit detaching/diffuser cleaning)
Accessories: saran net, diffuser
Main specifications: 4 way 4 speaker bass reflex type 2405/2420/2121/2231A crossover 300Hz/1250Hz/9500Hz 8Ω 93dB W635 x H1,051 x D435 mm 83.9 kg/book