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
A Look at Shopping for Wakeboard Tower Speakers for Your Boat
SWB8BTB | 8" 400W, 2‐Way Marine Wake Tower Speaker with Bluetooth/RCA, 4ohms, Pair - Marine Audio
How-to Choose the Right Amp for Marine Speakers - Monster Tower Blog