DynAudio has 10 speakers, 6 front 4 rear. In 07 here in the US we got 8 speakers with the RCD 500 option as the first level radio upgrade.You had to have the the RCD 500 or the nav model to get the DynAudio. I find it odd they would install grilles and no speaker. I can see no wires to the rear as a cost cutter.