All units and networks have been overhauled. A fully restored product that has undergone exterior repairs and saran net replacement. All Alnico 4343 WX. It's a good model in the series that has a lot of punch and sound. It is popular as an easy-to-handle model that makes it easy to drive low frequencies and makes a relatively clear sound even without a high output amplifier (Sasaki Shota)
Maintenance information: 2023.4.24 Maintained (exterior repair, polishing, oil finish. Front and rear baffle paint Saran net replacement, frame repair. Woofer maintenance (edge replacement, cone paper paint) Mid maintenance (edge replacement, cone paper paint) Driver maintenance (magnetic circuit rust removal/gap cleaning/center adjustment, sound absorbing material replacement, terminal contact cleaning) tweeter maintenance (horn disassembly cleaning, magnetic circuit rust removal/gap cleaning, terminal contact cleaning) network maintenance (terminal rust removal, acid cleaning, insulation bushing & mounting screws exchange. ATT replacement INT/EXT switchover SW contacts polish and clean. Tweeter resistor replacement A frequency characteristic measurement check (~ approx. 42 kHz) was performed, and the left and right HF 1.0MH coils that were misaligned were replaced, and the results were excellent, so the original capacitor was continued to be used. Input/output waveform and balance check, sound output check)
Accessories: none
Main specifications: 4-way monitor speaker bass reflex type playback frequency band 35 Hz to 20 kHz crossover frequency 300 Hz/1,250 Hz/9,500 Hz 8 ohms output sound pressure level 93 dB W635 x H1,051 x D435 mm 83.9 kg/book