How to improve the audio system of an Alfa Romeo Brera with a limited budget

In this video, we see how to improve the audio system of an Alfa Romeo Brera: it's a real shame that such a beautiful car has such a poor audio system. While the tweeters might be acceptable, the mid-range and woofers are truly terrible. However, we can't change the mids because to remove them we would have to take apart half the car, risking breaking who knows how many pieces, so let's leave them where they are. This vehicle is equipped with an aftermarket head unit featuring CarPlay. The speakers are Alpine, which we can find on Amazon under code B007MTNBSK at the price of 61.00 euros per pair, the mini subwoofer under code B08PVVL5G4 at the price of 168.95 euros, and the speaker frame under code B01CDBWYPC at the price of 18.90 euros. Let's take apart the door starting from the chrome handle, then remove the screw located under the panel, and then pull the panel towards us and upwards. The woofer and the original frame are fused together, so to install the new one, we will indeed need to buy it separately. Once everything is securely fastened, we can reassemble the door panel. The subwoofer is attached under the front seat with Velcro, but it needs a signal and power because it is an active subwoofer: the power is taken from the cigarette lighter, while the signal comes from the head unit with a cable that runs between the plastic and the carpet, following the gap and then under the seat, joining the power cables with some connectors. Then, from the equalizer, we make the rear mids harmless by bringing them to zero and letting the subwoofer take care of it.