Subwoofer Cable, 6-Feet RCA Male to 3.5mm 1/8" Monaural Mini Mono Male Plug Jack Connector Audio Trigger Cables – Ancable
Guide to automatically controlling power to amplifiers, powered monitors, and subwoofers : r/audiophile
2Pack 6Feet RCA Male to 35mm 18quot Monaural Mini Mono Male Plug Jack Connector Audio Cable Trigger Cable for PreAmp Subwoofer Soundbar RCA Cables - Newegg.com