Klipsch R-100SW 10" Subwoofer, Incredibly Deep Bass and an All-digital Amplifier,14 5" x 12 5" x 16 4"
Klipsch
Planet Audio P10AWK Amplified Car Subwoofer - 1000 Watts, Low Profile, 10 Inch Subwoofer, 8 Gauge Amplifier Installation Kit Included. Great for Vehicles That Need Bass But Have Limited Space
Planet Audio
Echo Sub - Powerful subwoofer for your Echo - requires compatible Echo device
Amazon
Klipsch R-12SW Powerful Deep Bass Front Firing 12" Copper-Spun Driver 400W Digital Power Subwoofer 14" X 18.5" X 16"
Klipsch