A compression driver includes a phasing plug including a base portion having a first side and an opposed second side, the first side including a central hub portion extending outwardly from the first side, the base portion including one or more apertures that extend therethrough from the first side to the second side. A diaphragm is disposed adjacent the phasing plug second side, and a compression chamber defined between the diaphragm and the phasing plug. In one embodiment, a front plate is attached to the phasing plug first side, the front plate having a central aperture generally aligned with the hub portion and base portion apertures. A horn may be attached to the front plate or directly to the phasing plug first side.