You're looking for a JBL 10" 4500W car under-seat speaker with heavy bass! JBL offers several options that might fit your bill.
- *JBL MS-BassPro SQ*: This 10" powered subwoofer packs a punch with its 300W RMS (450W peak) amplifier and Slipstream port technology for deep, distortion-free bass.
- *JBL Stage 1010 Subwoofer*: This 10" subwoofer delivers high-output, low-distortion bass with 225 RMS and 900W peak power handling.
- *JBL GT5-10*: A 10" subwoofer with 250W RMS and 1000W peak power handling, featuring a vented motor structure for intense bass.