Improving sound system quality for Peugeot 307

Hello friends, as the main unit in my car, Pionner AVH-165DVD has a self-amplified tape, although I have no problems with the front hoporter and twitter. which brand and model would you recommend? I also want to have sound insulation on the doors to improve the sound quality. Is there a place in Ankara that you know that is doing this job and that is affordable?

Aydın is doing insulation work in Ankara, but I do not have price information. Apart from the isolation, it is also a problem that the speakers are mounted on the door trim. If you coincided with the subject of my vehicle, I had the sheet cut and installed the speaker on the sheet. If the amplifier is not to be connected as a speaker, hertz dcx130 will do the job.

I think the car speakers may have exploded and sometimes leave dust on them or the screws on the speaker loosen the connection screws.