Hey guys, new TL owner here, Just got a 08 TL Type S, I really love it, the audio really isnt all bad (when im playing an mp3 cd, horrible through aux cord) I was just thinking about replacing door speakers to give it more of a deep bass effect, any recommendations for really reliable speakers with deep base?

 

https://acurazine.com/forums/3g-tl-audio-bluetooth-electronics-navigation-94/mild-grade-fever-854353/

do some research. plenty of audio build threads here. my ID components have nearly as much bass as the OEM sub did. but you will want to upgrade all components eventually.

the sound quality is going to be only as good as your source material. high quality material playing thru your aux jack should not sound bad. garbage in garbage out. I would not consider mp3-anything quality source material.