RDL®

DDB-RN31

Wall-Mounted Bi-Directional Mic/Line Dante Interface 4 x 4

SKU: DDB-RN31
  • Dante Network Interface for Four Audio Inputs and Four Audio Outputs
  • One Mini-jack, Two RCA Jacks and Two XLR Front-Panel Inputs
  • One Mini-jack Front-Panel Output; Two Balanced Outputs on Rear-Panel Terminal Block
  • Module is Configured and Adjusted Using Network Control Software
  • Converts Two Standard XLR Mic or Line Audio Sources to Dante Network Channels
  • Each Input Gain is Selected by Software
  • Mic Gain: 35 dB, 42 dB or 59 dB
  • Line Gain: Unity or 12 dB
  • 48 V Mic Phantom (P48) Selected by Software
  • Each Mini-jack and RCA -10 dBV Input May Feed One or Two Dante Network Channels
  • Converts Four Dante Network Audio Signals to Line Level
  • Mini-jack -10 dBV Stereo Output from Two Specific Dante Channels
  • Rear Panel Balanced Outputs from Two Specific Dante Channels
  • Each Rear Panel +4 dBu Output Equipped with Software Controlled Attenuator in 1 dB Steps
  • Studio Quality, Low-Noise Performance
  • High Resolution 24 Bit Analog to Digital and Digital to Analog Conversion
  • Legendary RDL Analog Filtering Enhances Superb Audio Performance
Category:

Description

The DDB-RN31 is a complete wall-mounted Dante audio network interface. It features two XLR mic or line inputs, one stereo Mini-jack line input, left and right RCA jack inputs and one stereo Mini-jack line output on the front panels, plus two line outputs on a rear-panel detachable terminal block. The module is configured and adjusted using RDL CONSOLE or other network control software. The DD-RN31 fits a standard US dual-gang electrical box or an RDL WB-2 back box for installations in thinner European or equivalent walls. The DD-RN31 is PoE powered, and is available in multiple finishes with optional customized graphics. Mic/Line to network section The two XLR inputs are each converted to a separate Dante network transmit channel. Gain settings are software-selectable for both the mic and line input ranges to match condenser or dynamic mic levels and standard line levels. P48 phantom voltage may be software enabled when an input is set for mic level. Line to network section The Mini-jack and RCA jack left and right inputs each provide a network digital audio level of -18 dBFS for an unbalanced -10 dBV input. The control software allows each of these inputs to feed either or both of two Dante channels. Multiple sources fed to a single Dante output are summed. Network to line section Two Dante audio channels are converted to unbalanced line level to feed the front-panel Mini-jack. Each channel provides -10 dBV unbalanced for a network digital audio level of -18 dBFS. Two Dante audio channels are converted to balanced line level on the rear-panel detachable terminal block. Each output provides +4 dBu balanced for a network digital audio level of -18 dBFS. Valid PoE power and synchronization to the Dante network are indicated by green LEDs visible from the front of the unit. The DDB-RN31 is a professional grade product with RDL mic preamplifiers for studio quality fidelity and low noise performance, coupled through XLR jacks housed in a steel chassis with dual powder-coated or stainless steel Decora® front plates. The DDB-RN31’s superior performance specifications make it ideally suited to the most demanding installations, and an exceptional value in commercial networked audio systems. This full-featured product is engineered and manufactured in the U.S.A for continuous duty in demanding installations. Designed to outperform. Built to last.

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 Level:-18 dBFS = +4 dBu
Reference Level:0 dBFS = +22 dBu
Mic/Line Inputs to Network Interface

Inputs (2):XLR (female)
Gain:Mic: 35 dB (LOW), 42 dB (MED), 59 dB (HIGH); Line: Unity (NORM), 12 dB (HIGH)
Input Level (for +4 dBu/-18 dBFS):Mic: -31 dBu (LOW), -38 dBu (MED), -55 dBu (HIGH); Line: +4 dBu (LOW), -8 dBu (HIGH)
Input Level (maximum):Mic: -14 dBu (LOW), -21 dBu (MED), -38 dBu (HI); Line: +23 dBu (LOW), +10 dBu (HIGH)
Input Impedance:> 1.2 kΩ
Phantom Power:P48, 48 Vdc, software-selectable
Standard for Phantom:IEC 61938: 2013
Selectors per input (2):Phantom, Gain, software-selectable
Frequency Response:20 Hz to 20 kHz (± 0.5 dB)
Equivalent Input Noise:< -128 dBu (59 dB gain); < -130 dBu A-Weighted
Noise below -18 dBFS (20 to 20 kHz):Mic: < -88 dB (LOW), < -82 dB (MED), < -68 dB (HIGH); Line: < -88 dB (NORM), < -88 dB (HIGH)
THD+N:< 0.1% (20 Hz to 20 kHz, +4 dBu/-18 dBFS)
CMRR:> 65 dB (50 Hz to 120 Hz)
Crosstalk:Below Noise Floor (20 Hz to 20 kHz at operating level, any input to any input, max. mic gain)
Inputs (4):Mini-jack Stereo (2, L and R); RCA jacks (2, L and R)
Input Level (for +4 dBu/-18 dBFS):-10 dBV nominal
Input Level (maximum):+8 dBV
Input Impedance:> 50 kΩ
Selectors:Stereo (L and R)/Mono (summed), software-selectable
Frequency Response:20 Hz to 20 kHz (± 0.2 dB)
Noise below -18 dBFS (20 to 20 kHz):< -85 dB
Crosstalk:< -85 dB (1 kHz); < -65 dB (L into R, R into L, 20 Hz to 20 kHz)
THD+N:< 0.05% (20 Hz to 20 kHz, +4 dBu/-18 dBFS); 0.01% at 1 kHz (typ)
Outputs (4):Balanced, detachable terminal block (2); Unbalanced, Mini-jack (2, L and R)
Output Level (operating):+4 dBu (nominal) balanced, software adjustable in 1 dB steps; -10 dBV (nominal) unbalanced
Output Level (maximum):+22 dBu balanced; +8 dBV unbalanced
Output Impedance:150 Ω balanced, 100 Ω unbalanced
Frequency Response:20 Hz to 20 kHz (± 0.5 dB)
THD+N:< 0.05%
Noise:< -88 dB (bal., below +4 dBu); < -106 (bal., below +22 dBu); < -90 dB (unbal., below -10 dBV)
Crosstalk:< -70 dB (bal., 20 Hz to 20 kHz); < -80 dB (unbal., 20 Hz to 20 kHz)
Indicators (4):Ethernet Link and Speed (2, rear panel); Sync and Power (2, front panel)
Ambient Operating Environment:0° C to 40° C; 30° C maximum recommended
Power Requirement:PoE Class 0, IEEE 802.3af
Specification Conditions:Gain/Level: ± 1 dB; Source termination: 150 Ω; A to D values measured in digital domain
Dimensions:3.52" (8.94 cm) W; 4.11" (10.44 cm) H; 2.09" (5.31 cm) D
Package Type:Cardboard Box
Package Dimensions:3.625 x 4.625 x 2.125 in.
Shipping Weight:0.92 lbs.
WEEE weight:0.765 lbs.
Tariff code:8543.70.9100

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