I was very unhappy with the stock audio speaker in my 2012 TDI Lux. If you call a VW dealer, they don't even know what the sizes are for the Tweeters & Midrange/Woofers. The tweeters are mounted in the back of the removable door panel and the midrange/woofer is mounted in the door frame. Please know that the tweeter filter/capacitor is actually mounted mounted in the woofer (see photos.) I decided just to replace the midrange/woofers with a nice two-way speaker and use the existing tweeters, because if you remove them, you have to order a new mounting piece from VW for the door. I had to have custom mounting boxes made to accommodate the new speakers wit a new capacitor for the tweeters.