Just a heads up. The speakers are small so the audio experience in the VS30 is a good bit underwhelming for me. This is my first sprinter but the stock Wrangler sound system sounds way better than the 2 (maybe a 3rd in the center dash?) setup this thing has. I will be upgrading...I just don't know if anyone has done it yet or if the MBUX will detect a change in the speakers (apparently newer systems know when a speaker has changed or been replaced).
There are definitely three speakers, but most of the sound is being reflected off the windshield by a automotive-grade dash speaker.
The door speakers look much bigger, but until I find a way to tweak the balance to use them, it is hard to say how they sound.