Volkswagen Passat b6 - Volkswagen Passat b6 - front speaker replacement

Hello.
I have a Passat b6, a serial RCD310 radio, a serial blaupunkt 8 loudspeaker system. My woofer is burnt in the front right door. What's the best replacement option? Buy the same used / new speaker? (Is it better to replace both speakers at the front with some better ones?) The set sounded even well but I would like the bass to be a little stronger. At the moment, only the speakers in the back and the front speakers work for me (the left woofer in the front does not work either)

If you do not intend to dampen the door, but only want to replace the speakers with new speakers, better buy original speakers.

I was still thinking about adding an active subwoofer to this. Will it change a lot with these speakers? ? Is it better to change all audio right away?

It's best to change the car right away

Without investment in "preparation" of the door, the purchase of speakers up to PLN 500 does not bring anything, because after connecting the new ones, you will think that the old ones sounded better! The standard loudspeakers have high efficiency and paper, light diaphragms, so if you liked how the series sounded, then buy only a subwoofer + an amplifier or just an active subwoofer and you will definitely increase the level of low tones in the car.