2pcs 4 Inch 40W Full Range Frequency Car Audio Speaker Heavy Mid bass Ultra thin Modified Speaker Non destructive Installation|Coaxial speakers| - AliExpress
New Kicker 2x50-Watt Full-Range Bluetooth Stereo Amplified Controller, 4x 6.5" Marine Coaxial 4-Ohm Speakers w/ 3/4" Tweeters, Enrock Marine 50 Ft 16-G Tinned Speaker Wire - Walmart.com