BM-D442 The P Audio BM-D442 is a 1.75 inch (44.4mm) medium format diaphragm compression driver coupled to a high density magnetic circuit. The compression driver exit diameter is an industry standard 1 inch (25.4mm). The design of the 442 is based on the extremely successful BM-D440 technology and represents substantial technological advances in both sound quality and ease of integration into system designs. The BM-D442 combines high magnetic field strength and a very lightweight diaphragm assembly, producing in a very high output device that also features extended bandwidth and well defined frequency response.

The phase plug is a circumferential slot design that has been redesigned to provide both extended bandwidth and superior response linearity. The phase plug to diaphragm spacing has been optimized for both extended frequency response and increased acoustic damping. The BM-D442 is optimized for very high performance two way system designs and is an excellent high frequency device for professional two way systems.