My wife have a 2016 Acura RDX with ELS system, the ELS system sound like sh!t.
Get a JL VX1000.5 Hertz MLK165.3 and ML3000.3
Run 2 way active plus sub.
https://www.carfeature.de/de/hifi-navigation/subwoofer/...-alle-subwoofer/16727/hertz-mille-ml-2000.3-20cm-subwoofer...