JBL 4344 TECHNICAL MANUAL DRIVER
Woofer maintenance (edge replacement, cone paper coating) Mid maintenance (edge replacement, cone paper coating) Driver maintenance (cleaning center adjustment in the magnetic circuit gap, sound absorbing material replacement, terminal contact Cleaning) tweeter maintenance (horn disassembly cleaning, magnetic circuit gap cleaning, terminal contact cleaning) exterior repair, polishing, oil finishing. I/O waveform and balance check, sound output check. ATT new replacement INT/EXT switching SW contact cleaning Perform frequency characteristic measurement check (~ 42 kHz) and continue to use the original capacitor for good results. Maintenance information: 2021.9.18 Maintained (terminal rust removal pickling, cleaning, replacement of mounting screws, connector abolished and round terminal installed. It is finished clean by exterior maintenance. JAZZ and SOUL from the 70s to 90s, rock, etc., show unparalleled compatibility even today. 4344 refreshed with internal and external maintenance! It dynamically expresses the viwness of the performance with a rich middle and low range that stands out from the Tallboy type and a powerful sound image.
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