It's been maintained! The network used for A5. The sound loss is very good, probably because of the crossover 500Hz large capacitor. There is an overhang and the goodness of sharpness is impeccable! It is a very attractive sound not only for Altec users but also for 500Hz networks. * The age is slightly different on the left and right. Appearance has aging small scratches, dullness, etc. (Satoshi Yonejima)
Maintenance Information: 2022.4.1 Maintained (Removed wire scraps soldered to terminals. Re-fix the unfixation of the large coil inside the housing with silicone sealant, and take measures to hold the sponge with scissors and the top plate. ATT (threaded) contact cleaning, rust removal of screws and bridge plates Frequency characteristic measurement check (~ 42 kHz) was performed and the original capacitor was continued to be used for good results. (Check input/output waveform and balance, check sound output)
Accessories: No accessories
Main specifications: Crossover 500Hz HF gain 4-stage switching (short plate) W203 × H270 × D115 mm
Maintained! A crossover 500 Hz network used for the A5. The sound loss is very good, probably because of the large condenser. It has an overhang and is perfect for cutting! It's a very attractive sound not only for Altec users but also for 500Hz networks. The exterior has aging scratches, dullness, etc. (Kobayashi Hitoshi)
Maintenance information: 2023.5.10 Maintained (coil capacitor re-fixed, reinforced. Rust removal treatment for screws such as screw-type ATT. Panel crack bonding treatment. A frequency characteristic measurement check (~ approx. 42 kHz) was performed, and the original capacitor was continuously used for good results. Input/output waveform and balance check, sound output check)
Accessories: none
Main specifications: crossover 500 Hz HF gain 4 stage switching (short plate) W203 x H270 x D115 mm 7.2 kg (actual measurement)