i have a jetta jazz too that i just recently bought. I swapped out the old stereo and i put in a more modern one and the speakers are really good bro! 10 speakers total in the car. 2 on the door, 2 on the dash, tweaters on the rear doors, 2 rear speakers and 2 more tweeters just about the rear speakers. The bass and treble bumps real good man. And im about to install a 4 channel amp a friend of mine gave me as a gift and lets see how it sounds.. i'll try to post up some pics but it wont be till the weekend