PRA-IM2A2
Audio Interface Module, 2x2
- Two microphone or line level audio inputs for calls or background music
- Two general purpose, supervised, inputs for control actions from external switches
- Two balanced line level audio outputs that can be assigned to zones
- Two general purpose relay outputs to activate external control circuits
- PoE powered device with dual redundant Gigabit network interface
The PRA-IM2A2 Audio interface module adds two balanced analog audio inputs and outputs to the PRAESENSA system, combined with two configurable and supervised control inputs and voltage‑free control outputs. The audio input signals can be used for calls and background music channels, activated through one of the control inputs. The audio output signals can be routed to zones for amplification by external amplifiers with analog inputs, or for recording purposes. The PRA-IM2A2 enclosure allows for DIN rail installation near to the auxiliary equipment for short interconnections. The module only requires a connection to an OMNEO IP‑network with Power over Ethernet (PoE) for communication and for power supply combined.
Specifications
| Audio inputs | |
| Number of audio inputs | 2 |
| Frequency response (Hz) (+/-0.5 dB at 0 dB gain) | 20 Hz – 20,000 Hz |
| Frequency response (Hz) (+0.5 dB / -3.0 dB at 54 dB gain) | 20 Hz – 20,000 Hz |
Specifications |
|
| Minimum signal-to-noise ratio (dB) (A-weighted at 0 dB gain) | 114 dB |
| Minimum signal-to-noise ratio (dB) (A-weighted at 54 dB gain) | 91 dB |
| Input level (dBu) | -36 dBu ‒ 18 dBu |
| Input impedance (Ω) (balanced) | 3,300 Ω (minimum) |
| Input impedance (Ω) (unbalanced) | 2,500 Ω (minimum) |
| Maximum distortion (%) | < 0.01% @ -3 dBFS / 1 kHz |
| Audio outputs | |
| Number of audio outputs | 2 |
| Frequency response (Hz) (+/-0.5 dB, both maximum output levels) | 20 Hz – 20,000 Hz |
| Minimum signal-to-noise ratio (dB) (A-weighted at maximum output level +12 dBu) | 111 dB |
| Minimum signal-to-noise ratio (dB) (A-weighted at maximum output level 0 dBu) | 103 dB |
| Maximum output level, adjustable | 0 dBu / +12 dBu |
| Output impedance (Ω) (balanced / unbalanced) | 150 Ω (maximum) |
| Maximum distortion (%) | < 0.01% @ -3 dBFS / 1 kHz |
| Audio | |
| Maximum crosstalk 1 dB below maximum at 1 kHz (dB) | < -80 dB |
| Phantom power (switchable per analog input) | +48 V / 10 mA |
| Sample rate (kHz) | 48 kHz |
| Signal processing per channel | |
| Master EQ | 7-band |
| Level control (dB) | 0 ‒ -60 dB, mute |
| Level control resolution (dB) | 1 dB |
| Dynamics | Compressor |
Downloads
Technical Documentations
| Name | Language & Download |
|---|---|
| PRA-IM2A2 Engineering Data Sheet | EN |
Marketing Materials
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Dynacord & Electro-Voice, together with our certified partners, are ready to help support you through planning, purchase, and setup. Services available through our network of highly-qualified associates and partners may include:
- System Design
- Installation
- Programming & Commissioning
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