4" Filter Sort × Filters In Stock Availability In Stock Price Under $50 (2) $50-$100 (2) Peak Power 100-200 (1) Size 4" (3) Voice Coils 4 Ohm (1) Sensitivity 86-90 dB (1) Speaker Type 2-Way (1) Receiver Size Yes (1) × Sort Options SKU: A-ZSKU: Z-A Price: Low to HighPrice: High to Low Least PopularMost Popular Sort by: SKU Sale Price Popularity Harmony Audio HA-R4 Car Stereo Rhythm Series 4" Replacement 15... $33.95 $49.99 Harmony Audio HA-C4 Car Stereo Carbon Series 4" Replacement 17... $52.95 $89.99 Harmony Audio HA-R4 Car Stereo Rhythm Series 4" Replacement 15... $36.99 $57.99 Harmony Audio HA-C4 Car Stereo Carbon Series 4" Replacement 17... $56.99 $85.99