RDL RU-MLB4 Mic/Line Bi-Directional Network Interface, Dante Output

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RU-MLB4
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The RU-MLB4 modules are Dante audio network interface products compatible with microphones and line-level audio equipment inputs and outputs. These modules are designed to be mounted in equipment racks, closets, conference tables and on shelves or backboards in commercial/industrial installations.

The RU-MLB4 is powered from an external 24 Vdc power supply, available separately. The RU-MLB4P is equipped to operate from a PoE enabled network switch. The RU-MLB4P will reserve power from the switch even while being powered from an external 24 Vdc supply. If PoE power and an external 24 Vdc supply are both feeding an RU-MLB4P, the unit will run from the external supply and will seamlessly switch over to PoE power upon loss of the external supply.

The RU-MLB4’s superior performance specifications make it ideally suited to the most demanding installations, and an exceptional value in commercial networked audio systems.

  • Interfaces Four Dante Inputs and Four Dante Outputs
  • Converts Four Standard Mic or Line Audio Sources to Dante Network Channels
  • Each Input is Switch-Selectable for Mic or Line
  • No User or Installer Gain Adjustments are Required
  • Automatic Microphone Gain of 40 dB for Condenser Mics and 60 dB for Dynamic Mics
  • P48 Phantom is Provided on Each Microphone Input
  • Line-Level Inputs Accept Unbalanced -10 dBV or Balanced +4 dBu Signals with > 18 dB Headroom
  • Front-Panel Signal LED for Each Audio Input
  • Converts Four Dante Network Audio Signals to Balanced Line Level
  • Line-Level Outputs Provide +4 dBu with > 18 dB Headroom
  • Signal LEDs Indicate Audio for Each of the Received Network Signal Channels
  • High Resolution 24 Bit Analog to Digital and Digital to Analog Conversion
  • Legendary RDL Analog Filtering Enhances Superb Audio Performance
  • LED Indicators Show Network Sync Status
  • Normal or Hot-Standby Operation from PoE (Model RU-MLB4P)
  • Equipped for Rack Mounting or Surface Mounting
  • Network Connector:RJ45 with Link and Speed indicators
  • Digital Audio Ethernet Protocol:Dante
  • Transmission Rate: 100 Mbps
  • Sample Rates Supported:44.1 kHz, 48 kHz (default)
  • Bit Depth Supported:24 bits
  • Audio Operating Levels:-18 dBFS = +4 dBu
  • Mic/Line Inputs to Network Interface Section
  • Mic Inputs
  • Inputs (4):Balanced, detachable terminal block
  • Gain:Automatic; 40 dB for condenser mics, 60 dB for dynamique mics
  • Input Level for +4 dBu:-56 dBu (dynamic), -36 dBu maximum; -36 dBu (condenser), -19 dBu maximum (unclipped), -14 dBu maximum (soft clipped)
  • Input Impedance:> 1 k ohms
  • Phantom Power:P48, 48 Vdc
  • Standard for Phantom:IEC 61938: 2013
  • Frequency Response:20 Hz to 20 kHz (+/- 0.5 dB)
  • THD+N:< 0.1%
  • Noise below +4 dBu:< -70 dB
  • CMRR:> 70 dB (50 Hz to 120 Hz)
  • Crosstalk:< 70 dB (20 Hz to 20 kHz)
  • Line Inputs
  • Inputs (8):Balanced, detachable terminal block (4); Unbalanced, detachable terminal block (4)
  • Input Level for +4 dBu:+4 dBu (balanced); -10 dBV (unbalanced)
  • Input Impedance:> 20 k ohms
  • Frequency Response:20 Hz to 20 kHz (+/- 0.5 dB)
  • THD+N:< 0.1%
  • Noise below +4 dBu:< -75 dB
  • CMRR:> 60 dB (50 Hz to 120 Hz)
  • Crosstalk:< 75 dB (1 kHz, any line to any mic channel), < 70 dB (20 Hz to 20 kHz)
  • Headroom above +4 dBu:> 18 dB
  • Network to Line Level Interface Section
  • Outputs (4):Balanced, detachable terminal block
  • Output Level:+4 dBu (nominal)
  • Output Impedance:150 ohms balanced; 75 ohms unbalanced
  • Frequency Response:20 Hz to 20 kHz (+/- 0.5 dB)
  • THD+N:< 0.05%
  • Noise below +4 dBu:< -80 dB (output active); < -95 dB (outputs muted)
  • Crosstalk:< 85 dB (20 Hz to 20 kHz)
  • Headroom above +4 dBu:> 18 dB
  • Selectors (4):MIC or LINE (rear panel)
  • Indicators (13):Power In (1); Output Signal LEDs (4); Input Signal LEDs (4); Network Sys and Sync (2), Ethernet Link and Speed (2)
  • Power Connections (2):Power Jack; Detachable Terminal Block
  • Ambient Operating Environment:0° C to 40° C
  • Power Requirement:24 Vdc @ 180 mA plus connected phantom loads, or PoE (RU-MLB4P)
  • PoE (RU-MLB4P):Class 0, IEEE 802.3af
  • Dimensions:5.8" (15 cm) W; 1.7" (4.3 cm) H; 5.2" (13.2 cm) D
  • Package Type:Cardboard Box
  • Package Dimensions:6 x 6 x 2.625 in.
  • Shipping Weight:1.78 lbs. (RU-MLB4); 1.805 lbs. (RU-MLB4P)
  • WEEE weight:1.52 lbs. (RU-MLB4); 1.545 lbs. (RU-MLB4P)
  • Tariff code:8517.18.0050

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