RDL DDS-BN2M Datasheet

Model DD SERIES-BN2M

Wall-Mounted Bi-Directional
Mic/Line Dante Interface 2x2

y Interfaces Two Dante Inputs and Two Dante Outputs
y Inputs on Front-Panel XLR Jacks; Outputs on Rear-Panel Terminal Block
y Conver ts Two Standard Mic or Line Audio Sources to Dante Network Channels
y Converts Two Dante Network Audio Signals to Line Level
y Special Software Not Required for Module Setup
y Each Input is Switch Selectable for Mic or Line
y Studio Quality Low-Noise Microphone Preamplifiers
y Switch-Selectable Mic Gain: 40 dB, 48 dB or 62 dB
y Switch-Selectable 48 V Mic Phantom (P48)
y Switch-Selectable Line Gain: Unity, 12 dB or 19 dB
y Each Output is Switch Selectable for Balanced +4 dBu or Unbalanced -10 dBV
y Studio Quality, Low-Noise Performance
y High Resolution 24 Bit Analog to Digital and Digital to Analog Conversion
y Legendary RDL Analog Filtering Enhances Superb Audio Performance

APPLICATION: The DD-BN2M is a complete wall-mounted Dante audio network interface. It features two XLR mic or line inputs on the front

panels, plus two line outputs on a rear-panel detachable terminal block. Special software is not required to configure the DD-BN2M. Each XLR
input provides three switches that may be set from the front of the unit when the cover plate is not installed. One switch enables or disables
P48 phantom; the second switch selects the mic or line gain range; the third switch sets the gain. Each rear-panel output provides a switch to
set the output to balanced professional or unbalanced consumer level. The DD-BN2M 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-BN2M is PoE powered, and is available in multiple finishes
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.

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-BN2M. AMS
audio connectors include RCA, Mini and XLR jacks. The output plate may be located together with the DD-BN2M in a triple gang box or may
be mounted remotely in a single box.

Valid PoE power and synchronization to the Dante network are indicated by green LEDs visible from the front of the unit.

The DD-BN2M is a professional grade product with discrete mic preamplifiers for studio quality fidelity and low noise performance, coupled
through metal XLR jacks housed in a stainless steel chassis with powder-coated or stainless steel Decora front plates.

The DD-BN2M’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.

DD-BN2M

DDB-BN2M DDS-BN2M

RDL • 659 6th St. • Prescott, AZ., USA 86301 • [phone] • FAX [phone] • www.rdlnet.com

Model DD SERIES-BN2M

Wall-Mounted Bi-Directional
Mic/Line Dante Interface 2x2

Fasten this unit into a wall box
or chassis by threading the four
mounting screws (included) into
the corresponding holes in the
wall box/chassis.

Installation/Operation

Declaration of Conformity available from rdlnet.com.

Sole EMC specications provided on product package.
Specications are subject to change without notice.

This product is not specified to provide
basic insulation from network cabling not
installed wholly within the same building
structure or terminated on equipment
earthed to a different ear thing network.

Radio Design Labs Technical Support Centers

U.S.A. [phone], [phone]; Fax: [phone]

Europe [NH Amsterdam] (++31) 20-6238 983; Fax: (++31) 20-6225-287

Model DD SERIES-BN2M

Wall-Mounted Bi-Directional
Mic/Line Dante Interface 2x2

TYPICAL PERFORMANCE

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: -20 dBFS = +4 dBu
Reference Level: 0 dBFS = +24 dBu

Mic/Line Inputs to Network Interface

Inputs (2): XLR (female)
Gain: Mic: 40 dB (LO), 48 dB (MED), 62 dB (HI);
Line: Unity (LO), 8 dB (MED), 19 dB (HI)
Input Level (for +4 dBu/-20 dBFS): Mic: -36 dBu (LO), -44 dBu (MED), -58 dBu (HI);
Line: +4 dBu (LO), -8 dBu (MED), -15 dBu (HI)
Input Level (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 kΩ (MIC); > 5 kΩ (LINE)

Phantom Power: P48, 48 Vdc, switch-selectable
Standard for Phantom: IEC 61938: 2013
Selectors per input (3): 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, max. mic gain)

This product is not specified to provide basic insulation from network
cabling not installed wholly within the same building structure or terminated
on equipment earthed to a different ear thing network.

Network to Line Outputs

Outputs (2): Balanced, detachable terminal block
Output Level (operating): +4 dBu (nominal) balanced; -10 dBV (nominal)
unbalanced, switch-selectable
Output Level (maximum): +24 dBu balanced; +10 dBV unbalanced

Output Impedance: 150 Ω balanced; 2.5 kΩ unbalanced

Frequency Response: 20 Hz to 20 kHz (± 0.5 dB)
THD+N: < 0.1%
THD: < 0.01% (1 kHz)
Noise: < -80 dB (below +4 dBu or -10 dBV);
< -100 (below +24 dBu)
Crosstalk: Below Noise Floor (20 Hz to 20 kHz at
operating level, output to output)
Headroom above +4 dBu or -10 dBV: 20 dB

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
Mounting:
box (4 square deep recommended) or RDL

WB-2U (international wall box) at elevation ≤ 2 m.

Wall mount in North American dual electrical

Equivalent Gain Settings for Dante Products

Digital signal levels in a Dante network are measured in dBFS (dB referenced to the maximum output or clipping level). The nominal standard reference level used in professional
audio products is: 0 dBFS = +24 dBu. A normal operating level of +4 dBu results from a digital level of -20 dBFS.

Some OEM industry products do not specify their reference and use a non-standard reference, such as 0 dBFS = +2 dBu. Gain definitions for such products do not equate to
standard levels. An operating level of -18 dBu results from a digital level of -20 dBFS. For these OEM products, 22 dB must be added to the specified levels (gain, noise floor, etc.) to
normalize their specs to be equivalent to those of professional audio products.

The following table helps designers specify functionally equivalent gain settings between products using the two references described above. Installers can use this table to determine
the correct switch settings on an RDL Decora module if system specifications are provided for the non-standard dBFS/dBu reference.

Non-Standard Reference Products (OEM)
Reference: 0 dBFS = +2 dBu

Gain Setting

Equivalent

-18 dB

---

-3 dB

--­ 25 dB
40 dB

*Unity gain on RDL products is 4 dB less than corresponding “OEM” gain in order to provide full headroom for +4 dBu balanced inputs.

RDL Dante Decora Products
Reference: 0 dBFS = +24 dBu
Gain Setting Mic/Line Switch Gain Switch

Unity* LINE LO
8 dB LINE MED
19 dB LINE HI
40 dB MIC LO
48 dB MIC MED
62 dB MIC HI

In the table, microphone gain set to “40 dB” on the OEM product will produce the same digital audio level as microphone gain set to “62 dB” on the RDL product and on all industry
products using the standard reference 0 dBFS = +24 dBu (-20 dBFS = +4 dBu).

The table is based on the “dBFS to dBu” references shown. OEM products may use a different reference, requiring a value other than 22 dBu be added to their gain, noise and other
level specifications for performance comparison to professional audio products. Levels given are nominal, ± 1 dB.

Radio Design Labs Technical Support Centers

891-5690

U.S.A. [phone], [phone]; Fax: [phone]

Europe [NH Amsterdam] (++31) 20-6238 983; Fax: (++31) 20-6225-287