- Main Features:
- 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
- Specifications:
- 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 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 kΩ
- 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 kΩ
- 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 Ω balanced; 75 Ω 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: 1.805 lbs. (RU-MLB4); 1.805 lbs. (RU-MLB4P)
- WEEE weight: 1.545 lbs. (RU-MLB4); 1.545 lbs. (RU-MLB4P)
- Tariff code: 8543.70.9100