Order the Low-Pass Filter | 100 Hz | 4 Ohm - SoundImports
high-pass-filter
QST . HALLICRAFTERS SX-99.Less speaker. Net $149.95. AMECO LOW PASS FILTERS Supresses radiation of oil frequenciesabove 40 MC, thereby removing a majorcause of TV!. Uses constant K circuit, de-signed for use
high-pass-filter
Order the Dayton Audio Low-Pass Filter | 500 - 6,000 Options | 4 Ohm - SoundImports