Microphone Preamplifier DMPE

The VisiWeb DMPE microphone amplifier is a compact preamp for dynamic microphones. Due to its robustness and IP67 certification, it is particularly suitable for use in railway applications.

Powerful
The DMPE is a powerful preamplifier for dynamic microphones. The circuit is based on a dual operational amplifier, allowing the DMPE to provide up to 110 times amplification. The „E“ in its name stands for operation with external power supply, and the wide voltage range of 24 to 110 VDC enables use in numerous applications.

Compact and robust
The metal housing is designed to be mechanically very robust. It is dust and splash-proof (IP67) and also serves as a heat sink, eliminating the need for additional cooling measures.

The electronics in the DMPE are housed in a robust metal casing that is dust and water-protected.

Advantages

  • Wide voltage range
  • IP67 certified
  • Configurable
  • Compact und robust
  • Energy efficient

Fault-tolerant
Electrically, the amplifier has been designed to withstand short-term overvoltages, such as those caused by ESD or transients, without any problems. In addition, reverse polarity protection ensures that no damage occurs in the event of a temporary connection error.

Versatile
Thanks to the configurable input impedance of 700 Ω or 50 kΩ, the DMPE can be used with all commercially available dynamic microphones. This makes it versatile, not only in the railway sector but also in many other applications, such as a line-level amplifier.

Mechanical properties
Dimensions [Width x Height x Depth] 95 x 35 x 59 mm
Weight 189 g
Housing material Aluminium
Ingress protection IP67
Electrical Properties
Nominal Voltage 24-110 VDC
Power Consumption 4.5 W
Input Voltage Range 12-154 VDC