Abstract: Compression driver with a voice coil 3 which can move in an annular air gap 2 of a magnetic system 1 and with a diaphragm driven by the voice coil 3. The diaphragm 5 and compression chamber 12 are of annular design and compression chamber 12 is connected to a central sound output channel 14 around its perimeter. Owing to its annular design the diaphragm 5 has a large effective surface area and a small mass. The feed power is therefore relatively low, resonant frequency is high and therefore the fidelity of high frequencies is improved. This is particularly the case if the diaphragm is V-shaped, preferably curved towards the acute angle enclosed by it.