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

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

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

B&H # RDDDBN31 MFR # DD-BN31
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Expected availability: 3-7 business days

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  • 1Description

The white DD-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 DD-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 DD-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 DD-BN31. AMS audio connectors include RCA, mini, and XLR jacks. The output plate may be located together with the DD-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 DD-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
In the Box
RDL DD-BN31 4 x 4 Wall-Mounted Bi-Directional Mic/Line Dante Interface (White)
  • Limited 3-Year Warranty
  • Table of Contents
    • 1Description
    Network Connectors RJ45 with link and speed indicators
    Ethernet Protocol Digital Audio: Dante
    Transmission Rate 100 Mb/s
    Sample Rates 44.1 kHz, 48 kHz (default)
    Bit Depth 24 bits
    Operating Level Audio Operating Level: -20 dBFS = +4 dBu
    Reference Level 0 dBFS = +24 dBu
    Microphone Inputsvubcycbcfccxxrrvrvrrfuzdtwrebadbzrw
    Inputs 2 x XLR (female)
    Gain Mic: 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 Power P48, 48 VDC, switch-selectable
    Standard for Phantom: IEC 61938: 2013
    CAC Selectors Selectors per Input: Phantom, Mic/Line, Gain
    Frequency Response 20 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)
    Crosstalk Below noise floor (20 Hz to 20 kHz at operating level, any input to any input, maximum mic gain)
    Headroom 20 dB
    Line Inputs
    Input Mini-jack stereo (2, L and R)
    Input Level +4┐dBu / -20┐dBFS: -10┐dBV nominal
    Maximum: +10┐dBV
    Input Impedance > 50 kOhms
    Selector Controls Stereo (L and R) / Mono (summed)
    Frequency Response 20 Hz to 20 kHz (±0.2┐dB)
    Noise Below -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)
    Headroom 20┐dB
    Line Outputs
    Outputs Balanced, detachable terminal block (2)
    Unbalanced, mini-jack (2, L and R)
    Output Level Operating: +4 dBu (nominal) balanced, -10 dBV unbalanced
    Maximum: +24 dBu balanced, +10 dBV unbalanced
    Output Impedance 150 Ohms balanced
    500 Ohms unbalanced
    Frequency Response 20 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)
    Crosstalk Below 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)
    Headroom Above +4 dBu or -10 dBV: 20 dB
    Indicators Ethernet Link and Speed (2, rear panel)
    Sync and Power (2, front panel)
    Operating Environment 32 to 104°F / 0 to 40°C
    86°F / 30°C (maximum recommended)
    Power Requirements PoE Class 0, IEEE 802.3af
    Environmental Conditions Gain/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
    Weight Not specified by the manufacturer
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