Filter Filters 6" x 9" Harmony Audio Remove All Filters Price $50-$100 (2) Condition New (2) Harmony Audio HA-C69 Car Stereo Carbon 6x9" Replacement 500W Speakers &... $85.99 Harmony Audio HA-R69 Car Stereo Rhythm Series 6x9" Replacement 450W Speakers... $64.99