Amazon.com: 5 CORE 15 Inch Subwoofer Speaker 2200W Peak High Power Handling 250W RMS 15" Replacement 8 Ohm Pro Audio DJ Sub Woofer w/CCAW Voice Coil Steel Frame 90oz Magnet 15-185 MS
Stage3 427 | 4" (100mm) 2-Way coaxial car speaker
JBL Stage2 624 specifications
JBL Stage 602 Unboxing 6.5" 2-Way Car Speaker - YouTube