8'' High End Midbass Speaker, 300W MAX, 4 Inch Coil (Each) – nepaudio
NEW 6"" XPL XW06-04 Woofer - 16cm 6"" 165 100watt RMS CAR Woofer Speaker!! | eBay
16cm (6” 1/2) 5-Way Coaxial Speaker | XS-XB1651 | Sony OM
2pc 6 Inch Car Loundspeaker 16cm 500w 4 Way Car Coaxial Speaker Auto Music Stereo Full Range Frequency Hifi Speaker For Car Auto - Speakers - AliExpress