2023.12.18Maintained professional cross 800Hz network. It is used in the 4320, etc., and the low frequencies are pushed out smoothly, giving the impression that the clarity of the mid-high range has improved. This network is useful for creating 2-way systems where woofers have a certain amount of area. How about making a 2-way horn system with a 16Ω unit? There are stains and rust on the main body. (TERAMOTO Hidehiko)
Maintenance information: 2023.12.18 Maintained (terminal rust removal treatment, cleaning, mounting screw replacement. SW type ATT contact cleaning. Frequency characteristics are measured and checked, and the original capacitors are continuously used for good results. (Check the input/output waveform and balance, check the sound output)
Main specifications: crossover frequency 800 Hz impedance 12 to 16 ohms W122 x H154 x D132 mm 1.9 kg/1 unit
Maintained! Professional cross 800Hz network. The impression is that the low frequencies are pushed out smoothly, and the clarity of the mid to high frequencies has improved. This network is useful for creating 2-way systems where woofers have a certain amount of area. The exterior is dull and scratched. Serial 15944/16467 (Yonejima Satoshi)
Maintenance information: 2020.6.2 maintained (terminal rust removal (pickling) treatment, cleaning, insulation bushing & mounting screw replacement. ATT (SW type) contact cleaning. Solder fixed to ATT SW. Coil fixing is reinforced with silicone. Frequency characteristics measurement checks (~ approx. 42 kHz) were performed, and the original capacitors were continued to be used for good results. (Check input/output waveforms and balance, check sound output)
Accessories: no accessories
Main specifications: crossover frequency 800 Hz impedance 12 to 16 ohms W122 x H154 x D132 mm 1.9 kg/1 unit