It's been maintained! This high-pass filter is recommended for the Super Tweeter PT-R100 released in 2002. It is possible to select the frequency to be cut by the 12/16/20kHz terminal to be connected. There are several repairs for chipping wounds each (Yoichi Murakoshi)
Maintenance Information: 2022.4.23 Maintenance (terminal installation, defect site putty filling, only the putty part after enamel painting. (Network characteristics measurement.) 2022.4.1 Each input and output sound has been confirmed
Accessories: None
Main specifications: Crossover frequency: 12K/16K/20kHz (-12dB/oct) Switchable impedance 8Ω Maximum input 100W W150 × H105 × D85mm 1.0 kg