Maintained! A popular 500Hz network installed in Paragon and Olympus. It uses excellent parts such as high voltage resistant non-polar capacitors and coils that use low loss Orient cores, and the cross is easy to use at 500 Hz, and it is a very easy to use network for those assembled with drivers such as 175 and 375. Overall, there is rust and dullness due to aging. (TERAMOTO Hidehiko)
Maintenance information: 2023.12.20 Maintained (terminal rust removal (pickling) treatment, insulation bushings & mounting screws replaced. ATT (SW type) contact cleaning. Frequency characteristics measurement checks (~ approx. 42 kHz) were performed, and the original capacitors were continued to be used for good results. Check the input/output waveform and balance, and check the sound output.
Main Specifications: Crossover Frequency/500Hz Level Control/3 Position Switch 8Ω W159×H153×D120mm 2.3 kg