Hello people, in order to be able to upgrade the sound of the MMI radio I play with the thought to mount a subwoofer under the seat. I am fully aware that this does not give you a high-end, it does not have to do either. The aim is to upgrade the weak lower area of the Audi sound system somewhat. Since I am not familiar with the topic of Auto Hifi therefore the question to you whether, for example, a Pioneer TS-WX120A can be installed and connected at all? So who has experience in this area, and knows how to upgrade the sound image for a bearable use, I am grateful for tips.