E400 speakers
Is that speaker the extras for the Bumester system? What is behind the black cloth, is that the collision alarm?
The High End 3D Burmester has its one inch tweeter there too. On this system, the tweeter is a special 'ring radiator' which is notable for high frequency 'purity' (at least that's the pitch). A downside of ring radiators is that they tend to be very directional and beam the sound more narrowly than conventional tweeters. As I understand it, this is why they are designed to twist out when the stereo is on. They are positioning themselves for better alignment with the passengers' ears.
The High End 3D Burmester has its one inch tweeter there too. On this system, the tweeter is a special 'ring radiator' which is notable for high frequency 'purity' (at least that's the pitch). A downside of ring radiators is that they tend to be very directional and beam the sound more narrowly than conventional tweeters. As I understand it, this is why they are designed to twist out when the stereo is on. They are positioning themselves for better alignment with the passengers' ears.
I will check with dealership during service call.
Last edited by Cambridgehank; May 17, 2018 at 11:32 AM.






