RDL DDB-RN40

Overview

The DDB-RN40 is a complete wall-mounted Dante audio network interface. It features four XLR mic or line inputs on the front panels and 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 DDB-RN40 fits a standard US dual-gang electrical box or an RDL WB-2 back box for installations in thinner European or equivalent walls. The DDB-RN40 is PoE powered, and is available in multiple finishes with optional customised graphics.

Mic/Line to network section

The four XLR inputs are each converted to a separate Dante network transmit channel. Three 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.

Network to line section

Two Dante audio channels are converted to balanced line level. Each output provides +4 dBu balanced for a network digital audio level of -18 dBFS. Each output is equipped with a software controlled attenuator adjustable in 1 dB steps to a maximum attenuation of 62 dB then OFF. 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 DDB-RN40. AMS audio connectors include RCA, Mini and XLR jacks. The output plate may be located together with the DDB-RN40 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 DDB-RN40 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-RN40’s superior performance specifications make it ideally suited to installations requiring network control and 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
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 (HIGH); 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)
Outputs (2)	Balanced, detachable terminal block
Output Level (operating)	+4 dBu (nominal) balanced
Output Level (maximum)	+22 dBu balanced
Output Impedance	150 Ω balanced
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); < -100 (below +22 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
Package Type	Cardboard Box
Package Dimensions	3.625 x 4.625 x 2.125 in.
Shipping Weight	0.909 lbs.
WEEE weight	0.76 lbs.
Tariff code	8543.70.9100