Hi Guys, need some advice for subwoofer setup

- My ride: Bezza 1.3
- Prefers SQ/SPL/SQL: SQ
- File format/medium used for my source: usb mp3/bluetooth from my phone
- Music genre: Mainly EDM, Pop, Hip Hop
- Budget: RM1k-2k for subwoofer setup
- Setup type preferences: 4channel+1subwoofer
- Other requirements (if any): 10"-12" ported subwoofer, active / passive please recommend, 250-500W RMS prefered
- Current setup: Original HU, 4-channel JBL A6004, front speaker JBL GX600C, rear speaker JBL club 6522.

Currently looking at JBL club 5501 monoblock, but what sub can be paired to this monoblock? 370W @4ohm and 550@2ohm.
looking at subwoofer JBL S3-1224 12" can be paired to 5501 monoblock. But where can i find the subwoofer box?