Maintained! A popular 2-way 500Hz network. It's an essential network for 2" drivers. In addition to a 3-position attenuator, it is equipped with a high frequency boost switch. It is very effective when constructing a 2-way system with a JBL 2441 driver, etc. The sound has also become fresh due to terminal rust removal (acid washing) treatment and insulation bushings and mounting screw replacement. There is a feeling of wear and small scratches over time (Teramoto Hidehiko)
Maintenance information: 2023/12/17 maintained (terminal rust removal (pickling) treatment, insulation bushing & mounting screw replacement. ATT (SW type) contact cleaning. Reinforced so that the coil fixing inside the housing does not come off. 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: none
Main specifications: crossover 500Hz low range 8Ω high range 16Ω high frequency level control 6/8/10dB 1.9 kg