Pyle Dual Bluetooth Off-Road Speakers - 6.5” 200W 2-Way Marine Waterproof Wakeboard Tower Sound System w/LED Light, Full Range Outdoor Stereo Speaker for Car ATV Jeep Boat, Includes Brackets (Black) - Walmart.com
Infinity 6000M Wakeboard tower speaker system at Crutchfield
Amazon.com: Pyle Waterproof Marine Wakeboard Tower Speakers - 8in Dual Subwoofer Speaker Set and 1” Tweeter with 300 Watt Power - 2-Way Boat Audio Stereo System with Mounting Bracket - 1 Pair PLMRW85 (White) : Electronics