For Harman Kardon Woofer 5.25 Inch Bass Speaker Subwoofer Extra Large Rubber Edge Long Stroke 2ohm 80w 140mm - Speakers - AliExpress
Operation; Troubleshooting; Turning The Subwoofer On And Off; Subwoofer Adjustments: Volume - Harman Kardon HKTS 200 SUB Service Manual [Page 10] | ManualsLib