RDL DDB-BN31 4 x 4 Wall-Mounted Bi-Directional Mic/Line Dante Interface (Black)

BH #RDDDBBN31 • MFR #DDB-BN31
RDL
RDL DDB-BN31 4 x 4 Wall-Mounted Bi-Directional Mic/Line Dante Interface (Black)
Special Order
Expected availability: 3-7 business days
$573.00

Important Notice

  • This item is noncancelable and nonreturnable.

RDL DDB-BN31 4 x 4 Wall-Mounted Bi-Directional Mic/Line Dante Interface (Black)

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RDL DDB-BN31 Overview

The black DDB-BN31 4 x 4 Wall-Mounted Bi-Directional Mic/Line Dante Interface from RDL is a complete wall-mounted Dante audio network interface. It features two XLR mic or line inputs, one stereo mini-jack line input and one stereo mini-jack line output on the front panels, plus two line outputs on a rear panel detachable terminal block. Special software is not required to configure the DDB-BN31. Each XLR input provides three switches that may be set from the front of the unit when the cover plate is not installed. The first switch enables or disables P48 phantom for that input, second switch selects the mic or line gain range, and the third switch sets the gain. The mini-jack input provides a switch to configure the input for stereo or summed mono. The mini-jack output provides a switch to configure the output for stereo or left-channel mono. Each rear panel output provides a switch to set the output to balanced professional or unbalanced consumer level.

The DDB-BN31 fits a standard US dual-gang electrical box or an RDL WB-2 back box for installations in thinner European or equivalent walls. It is PoE powered and is available with optional customized graphics.

The two XLR inputs are each converted to a separate Dante network transmit channel. Three gain settings are switch-selectable for both the mic and line input ranges to match condenser or dynamic mic levels and standard line levels.  The mini-jack left and right inputs are each converted to a separate Dante network transmit channel. Each input provides a network digital audio level of -20 dBFS for an unbalanced -10 dBV input. The input is equipped with a selector to sum the left and right mini-jack inputs. The summed signal feeds both Dante transmit channels.

The 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 -20 dBFS. The left and right mini-jack channels are normally fed from Dante receive channels 3 and 4 (stereo). The mini-jack output is equipped with a selector to feed both output channels from Dante receive channel 3 (mono). This selector may be set from the front of the unit when the cover plate is not installed.

The 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 -20 dBFS. Each output is equipped with a selector to unbalance the audio and attenuate the level to -10 dBV. These switches are located on the top of the chassis and are set by the installer prior to mounting the unit.

The rear panel outputs are intended for connection to RDL AMS connectors mounted in Decora-style plates that match the DDB-BN31. AMS audio connectors include RCA, mini, and XLR jacks. The output plate may be located together with the DDB-BN31 in a triple gang box or may be mounted remotely in a single box.

The valid PoE power and synchronization to the Dante network are indicated by green LEDs visible from the front of the unit. The DDB-BN31 features discrete mic preamplifiers for studio-quality fidelity and low-noise performance, coupled through metal XLR jacks housed in a stainless-steel chassis with dual powder-coated Decora front plates.

Suitable for demanding applications and networked audio systems
Dante network interface for four audio inputs and four audio outputs
One mini-jack and two XLR front panel inputs
One mini-jack front panel output and two outputs on rear panel terminal block
Converts two standard XLR mic or line audio sources to Dante network channels
Each XLR input is switch selectable for mic or line
Switch-selectable Mic Gain: 40, 48, or 62 dB
Switch-Selectable 48 V Mic Phantom (P48)
Switch-Selectable Line Gain: Unity, 12, or 19 dB
Mini-jack -10 dBV input is switch selectable stereo or summed to mono
Converts four Dante network audio signals to line level
Mini-jack -10 dBV output is switch selectable stereo or mono (left channel)
Rear panel outputs switch selectable balanced +4 dBu or unbalanced -10 dBV
Special software not required for module setup
24-bit analog to digital and digital to analog conversion
RDL analog filtering for improved audio performance
Made in the USA

RDL DDB-BN31 Specs

Network ConnectorsRJ45 with link and speed indicators
Ethernet ProtocolDigital Audio: Dante
Transmission Rate100 Mb/s
Sample Rates44.1 kHz, 48 kHz (default)
Bit Depth24 bits
Operating LevelAudio Operating Level: -20 dBFS = +4 dBu
Reference Level0 dBFS = +24 dBu
Microphone Inputs
Inputs2 x XLR (female)
GainMic: 40 dB (Lo), 48 dB (Med), 62 dB (Hi)
Line: Unity (Lo), 8 dB (Med), 19 dB (Hi)
Input Level+4 dBu/-20 dBFS:
Mic: -36 dBu (Lo), -44 dBu (Med), -58 dBu (Hi)
Line: +4 dBu (Lo), -8 dBu(Med), -15 dBu (Hi)

Maximum:
Mic: -16 dBu (Lo), -24 dBu (Med), -38 dBu (Hi)
Line: +24 dBu (Lo), +12 dBu (Med), +5 dBu (Hi)
Input Impedance> 2.5 kOhms (Mic)
> 5 kOhms (Line)
Phantom PowerP48, 48 VDC, switch-selectable
Standard for Phantom: IEC 61938: 2013
CAC SelectorsSelectors per Input: Phantom, Mic/Line, Gain
Frequency Response20 Hz to 20 kHz (±0.5 dB)
Equivalent Input Noise-130 dBu (62 dB gain)
-132 dBu A-Weighted

Noise below -20 dBFS (20 to 20 kHz):
Mic: < -72 dB (Lo), < -72 dB (Med), < -68 dB (Hi)
Line: < -72 dB (Lo), < -72 dB (Med), < -70 dB (Hi)
THD+N< 0.1% (20 Hz to 20 kHz, +4 dBu/-20 dBFS); 0.015% at 1 kHz (typ)
CMRR> 65 dB (50 Hz to 120 Hz)
CrosstalkBelow noise floor (20 Hz to 20 kHz at operating level, any input to any input, maximum mic gain)
Headroom20 dB
Line Inputs
InputMini-jack stereo (2, L and R)
Input Level+4¿dBu / -20¿dBFS: -10¿dBV nominal
Maximum: +10¿dBV
Input Impedance> 50 kOhms
Selector ControlsStereo (L and R) / Mono (summed)
Frequency Response20 Hz to 20 kHz (±0.2¿dB)
NoiseBelow -20¿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 / -2 dBFS)
0.01% at 1 kHz (typ)
Headroom20¿dB
Line Outputs
OutputsBalanced, detachable terminal block (2)
Unbalanced, mini-jack (2, L and R)
Output LevelOperating: +4 dBu (nominal) balanced, -10 dBV unbalanced
Maximum: +24 dBu balanced, +10 dBV unbalanced
Output Impedance150 Ohms balanced
500 Ohms unbalanced
Frequency Response20 Hz to 20 kHz (±0.5 dB)
THD+N< 0.1%
 
THD< 0.01% (1 kHz)
Noise< -78¿dB (bal., below +4¿dBu)
< -98 (bal., below +24¿dBu)
< -75¿dB (unbal., below -10¿dBV)
CrosstalkBelow noise floor (1 kHz)
< -60¿dB (bal., 20 Hz to 20 kHz)
< -80¿dB (unbal., 1 kHz), < -70¿dB (unbal., 20 Hz to 20 kHz)
HeadroomAbove +4 dBu or -10 dBV: 20 dB
IndicatorsEthernet Link and Speed (2, rear panel)
Sync and Power (2, front panel)
Operating Environment32 to 104°F / 0 to 40°C
86°F / 30°C (maximum recommended)
Power RequirementsPoE Class 0, IEEE 802.3af
Environmental ConditionsGain/Level: ±1 dB
Source termination: 150 Ohms
A to D values measured in digital domain
Dimensions (W x H x D)3.52 x 4.11 x 2.09" / 8.94 x 10.44 x 5.31 cm
WeightNot specified by the manufacturer
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