RDL DD-BN40 4 x 2 Wall-Mounted Bi-Directional Mic/Line Dante Interface

Introducing the DD-BN40: A Comprehensive Dante Audio Network Interface
The DD-BN40 is a wall-mounted audio network interface that is equipped with four XLR mic or line inputs on the front panel and two-line outputs on a detachable terminal block at the back. There is no need for any special software to configure the DD-BN40. Each input has three switches that are accessible from the front of the unit when the cover plate is removed. One switch enables or disables P48 phantom for that input; the second switch selects the mic or line gain range, and the third switch sets the gain. Each output has a switch to set the output to balanced professional or unbalanced consumer level. The DD-BN40 is compatible with 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 available in multiple finishes with optional customized graphics.

The four XLR inputs are converted into four separate Dante network transmit channels. 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.

Two Dante audio channels are converted to balanced line level. 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 before mounting the unit. The outputs are connected through a detachable terminal block.

The outputs are intended for connection to RDL AMS connectors mounted in Decora-style plates that match the DD-BN40. The AMS audio connectors include RCA, Mini and XLR jacks. The output plate may be located together with the DD-BN40 in a triple gang box or may be mounted remotely in a single box.

Green LEDs visible from the front of the unit indicate valid PoE power and synchronization to the Dante network.

The DD-BN40 is a professional-grade product with discrete mic preamplifiers for studio-quality fidelity and low noise performance. It also boasts a stainless-steel chassis with dual powder-coated or stainless-steel Decora front plates, and metal XLR jacks.

The DD-BN40's superior performance specifications make it ideal for the most demanding installations, and it is 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.

Key Features

• The DD-BN40 is a comprehensive Dante audio network interface designed for wall-mounting.
• It offers four XLR mic or line inputs on the front panels.
• The rear panel features two-line outputs on a detachable terminal block.
• Configuration of the DD-BN40 does not require any special software.
• Each input has three switches that can be adjusted from the front of the unit.
• The switches control P48 phantom power, mic or line gain range, and gain level.
• The outputs have a switch to set them to either balanced professional or unbalanced consumer level.
• The DD-BN40 can fit into a standard US dual-gang electrical box or an RDL WB-2 back box for thinner European walls.
• It is powered by PoE (Power over Ethernet).
• The DD-BN40 is available in multiple finishes and can be customized with optional graphics.

Technical 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
-20dBFS = +4dBu
Reference Level
0dBFS = +24dBu
Mic/Line Input to Network Interface
Input (4)
XLR (female)
Gain
Mic
40dB (LO), 48dB (MED), 62dB (HI); Line
Unity (LO), 8dB (MED), 19dB (HI)
Input Level (for +4dBu/-20dBFS)
Mic
-36dBu (LO), -44dBu (MED), -58dBu (HI); Line
+4dBu (LO), -8dBu (MED), -15dBu (HI)
Input Level (maximum)
Mic
-16dBu (LO), -24dBu (MED), -38dBu (HI); Line
+24dBu (LO), +12dBu (MED), +5dBu (HI)
Input Impedance
> 2.5 kΩ (MIC); > 5 kΩ (LINE)
Phantom Power
P48, 48 Vdc, switch-selectable
Standard for Phantom
IEC 61938
2013
Selectors for input (3)
Phantom, Mic/Line, Gain
Frequency Response
20 Hz to 20 kHz (± 0.5dB)
Equivalent Input Noise
-130dBu (62dB gain); -132dBu A-Weighted
Noise below -20dBFS (20 to 20 kHz)
Mic
< -72dB (LO), < -72dB (MED), < -68dB (HI); Line
< -72dB (LO), < -72dB (MED), < -70dB (HI)
THD+N
< 0.1% (20 Hz to 20 kHz, +4dBu/-20dBFS); 0.015% at 1 kHz (typ)
CMRR
> 65dB (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)
Headroom
20dB
Network to Line Outputs
Outputs (2)
Balanced, detachable terminal block
Output Level (operating)
+4dBu (nominal) balanced; -10dBV (nominal) unbalanced, switch-selectable
Output Level (maximum)
+24dBu balanced; +10dBV unbalanced
Output Impedance
150 Ω balanced; 2.5 kΩ unbalanced
Frequency Response
20 Hz to 20 kHz (± 0.5dB)
THD+N
< 0.1%
THD
< 0.01% (1 kHz)
Noise
< -80dB (below +4dBu or -10dBV); < -100 (below +24dBu)
Crosstalk
Below Noise Floor (20 Hz to 20 kHz at operating level, output to output)
Headroom above +4dBu or -10dBV
20dB
Indicators (4)
Ethernet Link and Speed (2, rear panel); Sync and Power (2, front panel)
Ambient Operating Environment
0 Degrees C to 40 Degrees C; 30 Degrees C maximum recommended
Power Requirement
PoE Class 0, IEEE 802.3af
Specification Conditions
Gain/Level
± 1dB; Source termination
150 Ω; A to D values measured in digital domain
Dimensions
3.52” (W) x 4.11” (H) x 2.09” (D)
Package Type
Cardboard Box
Package Dimensions
3.625 x 4.625 x 2.125 in.
Shipping Weight
1.0 lbs.