REVO 10 FA S4-W V2 | Wet Sounds 10" Free Air 4 Ohm Marine Subwoofer - Wet Sounds
Amazon.com: DS18 NXL10SUB Outdoor Marine Audio Subwoofer with RGB - 600 Watt MAX 300 Watt RMS 10-Inch White Waterproof Bass Loud Speaker For ATV/UTV Stereo Sound System, Under Helm or Box Case