Has anyone installed loudspeakers in the rear doors before?

Is there any way to add loudspeakers to the rear doors of the Arrizo 3?

Is there no loudspeaker in the rear seats of the 2016 1.5L Automatic Super Value Luxury Edition? Only the front doors have them, but it says there are 4 loudspeakers?

Is it convenient to install additional loudspeakers in the rear of the 2019 model?

Has anyone installed loudspeakers in the rear doors before?

Is there a pre-installed loudspeaker wiring harness and plug for the rear doors in the 2017 manual version of the Hyundai Reina? I'm considering adding a pair of speakers and would like to know if it's ready for installation.

I would like to ask if there are pre-installed wires for adding loudspeakers in the rear two doors?

Has anyone installed welcome lights before? Do you have any links?

Has anyone changed the loudspeaker before? Is it easy to replace? Does anyone know? I want to change it because the car's loudspeaker is too embarrassing.

Is the rear door loudspeaker in the 2017 model 308 fake? My rear door has no sound, only the front door has sound.

Does the 2023 Leading Edition have loudspeakers in the rear doors?