4" Harmony Audio HA-R4 Car Stereo Rhythm Series 4" Replacement 150W Speakers &... $32.95 Harmony Audio HA-C4 Car Stereo Carbon Series 4" Replacement 170W Speakers Pair $49.95 Harmony Audio HA-R4 Car Stereo Rhythm Series 4" Replacement 150W Speakers &... $35.99 Harmony Audio HA-C4 Car Stereo Carbon Series 4" Replacement 170W Speakers... $53.99