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Neumann DMI-2

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2-Channel Digital Microphone Computer Interface for Solution-D Microphones, USB


Equipment that supports the new AES 42 standard can process the output signals of Solution-D microphones directly. In all other cases, the DMI-2 digital microphone interface is used. The DMI-2 is a separate, two-channel device which converts the AES 42 data format supplied by the microphone into an AES/EBU signal. An eight-channel version is under development.

The DMI-2 is operated via the Neumann RCS remote control software, which is installed on a desktop or laptop computer. The computer is connected to the DMI-2 via a USB port and a USB to RS 485 interface converter. If a large number of microphones is used, several DMI-2s can be cascaded. In this case, each digital microphone interface can be addressed individually.

In addition to a word clock input and output, the DMI-2 also has an internal word clock generator. If no master word clock signal (e.g. from a mixing console) is present at the input, the DMI-2 internal word clock is used automatically to synchronize the two microphone channels, and the signal is switched to the word clock output.

External commands such as "On Air" (red light) can be controlled via a 9-pin user port.


  • 2 channels, Inputs: XLR3F, AES 42; Outputs: XLR3M, AES/EBU, 24 bit

  • Control bus: RS485 via RJ 45 jack. Second RJ 45 jack for cascading purposes (up to 4 DMI devices today, 16 devices in future). Connection to the computer's USB port via Neumann USB485 interface converter (included).

  • User Port: 9-pin sub-D, 3 functions per channel

  • Synchronization: AES 42 - Mode 2 (PLL system using an external Word Clock and remote controlling the VCXO in the microphone, default mode), AES 42 - Mode 1, (asynchronous, needs a sample rate converter (SRC) at the receiver side).

  • Word clock input: BNC, 75 ohms.

  • Word clock output: BNC, 75 ohms, automatically set to the internal word clock master when no external word clock received. Selectable internal sampling rates: 44.1, 48, 88.2, 96, 176.4, 192 kHz.

  • External Word clock: 44.1, 48, 88.2, 96, 176.4, 192 kHz

  • or AES 11 format.

  • Indicators: Data Valid (AES 42) and Sync Locked (Mode 2) for each channel, Power On and Ext. Word Clock.

  • Power supply: 90-240 V, 50/60 Hz.

  • Storage of the last microphone settings and reloading to the microphones after power on automatically without the need of the computer/RCS.

Q & A

MFR Part Number
Product Category
Audio Interfaces
Unit of Measure
Shipping Weight
3.00 lbs.
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