BM-D II Series


P-Audio BM-D442S 50W 1" Throat Compression Driver

Click here to download the Datasheet (PDF)

The P Audio BM-D442S is a 1.75 inch (44.4mm) medium format dia phragm 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 442S is based on the extremely successful BM-D440S technology and represents substantial technological advances in both sound quality and ease of integration into system designs. The BM-D442S 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 BMD442S is optimized for very high performance two way system designs and is an excellent high frequency device for professional two way systems. The driver has a rated low frequency response limit of 1.5kHz and features extended response to beyond 20kHz.

The BM-D442S is a Ferrite based magnetic system with an FEA (Finite Element Analysis) modeled magnetic circuit designed to yield very high magnetic density and high acoustic conversion efficiency. The light weight titanium based diaphragm design and optimized geometry insure extended response. The magnetic circuit and phase plug geometry are an integrated design that yields an excellent combination of both mechanical and acoustical conversion efficiencies.

The BM-D442S features an industry standard screw-on style mounting system that is ideally mated to all P Audio PH series high frequency horns as well as any industry standard high frequency horn that can accommodate a standard 1 inch “screw-on” mounting pattern.

Throat Diameter: 1.0 inch (25.4mm)
Diaphragm Diameter: 1.75 inch (44.4mm)
Nominal Impedance: 8 Ohm
Voice Coil DC Resistance: 6.8 Ohm
Power Handling: 50Watt
Sound Pressure Level (1W@1M)(Loaded with 90x40 Horn): 108 dB
Diaphragm Material: Titanium
Mounting Type: Screw On
Magnet: Ferrite
Recommended Crossover: 1.5kHz or higher (12dB/Oct slope)
NetWeight: 2kg (4.4lbs) 1pc
Packing Dimension HxWxD(cm): 29 x 14.1 x 10.3 (0.15 Cu.Ft)
Gross Weight: 4.1kg (9lbs) 2pcs