Precision Audio and AV Interface Products

Radio Design Labs

FP-NML2P Network to Mic/Line Interface

  • Adapts Standard Audio Amplifiers to a Dante Network
  • Converts Two Dante Network Audio Signals to Professional Line Level
  • Each Output is Switch-Selectable for Mic or Line Level
  • Line-Level Outputs Provide +4 dBu with > 18 dB Headroom
  • Exceptional Low-Noise and Low-Distortion Performance
  • Crosstalk is Below the Noise Floor
  • 24 Vdc Pass-Through Jack for Power Supply Sharing with RDL Amplifiers (FP-NML2)
  • High Resolution 24 Bit Digital to Analog Conversion
  • Legendary RDL Analog Filtering Enhances Superb Audio Performance
  • Outputs Mute when Digital Audio Inputs are Inactive
  • Normal or Hot-Standby Operation from PoE (Model FP-NML2P)
  • Equipped for Rack Mounting or Surface Mounting
  • Overview
  • Specifications
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The FP-NML2 modules are Dante audio network interface products compatible with mic-level or line-level audio equipment inputs. These modules are designed to be mounted in equipment racks, closets, conference tables and on shelves or backboards in commercial/industrial installations.

APPLICATION: The FP-NML2 is a high quality converter that provides professional line-level outputs from two Dante network audio channels. Each line output provides +4 dBu balanced for a network digital audio level of -18 dBFS. The professional output directly interfaces with other professional and commercial equipment without the need for additional gain. Crosstalk is below the noise floor between all outputs across the entire audio spectrum. The noise floor is better than 80 dB below operating level with greater than 18 dB of headroom. Each output is equipped with a recessed mic/line switch that provides 50 dB of attenuation to feed the microphone input of a mixer-amplifier or other equipment with mic inputs.

The FP-NML2 is powered from an external 24 Vdc power supply, available separately. The FP-NML2P is equipped to operate from a PoE enabled network switch. The FP-NML2P will reserve power from the switch even while being powered from an external 24 Vdc supply. If PoE power and an external 24 Vdc supply are both feeding an FP-NML2P, the unit will run from the external supply and will seamlessly switch over to PoE power upon loss of the external supply.

The FP-NML2 includes a dc output jack and extension cable that allows it to be operated from a common power supply with RDL FLAT-PAK amplifiers. One audio output connects to the FLAT-PAK amplifier input, and the second output may be connected to an additional amplifier.

The FP-NML2’s superior performance specifications make it ideally suited to the most demanding installations, and an exceptional value in commercial networked audio systems.

The FP-NML2 is constructed in a durable, professional all-metal enclosure suitable for free-standing, surface-mounted or rack-mounted operation. This full-featured product is engineered and manufactured in the U.S.A for continuous duty in demanding installations. Built to last. Built to outperform.

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 Levels:
-18 dBFS = +4 dBu
Outputs (2):
Balanced, detachable terminal block
Output Level:
+4 dBu (nominal)
Output Impedance:
150 Ω balanced; 75 Ω unbalanced
Frequency Response:
20 Hz to 20 kHz (± 0.5 dB)
THD+N:
< 0.1%
Noise below +4 dBu:
< -80 dB (output active); < -95 dB (outputs muted)
Crosstalk:
< 90 dB (1 kHz); < 80 dB (20 Hz to 20 kHz)
Headroom above +4 dBu:
> 18 dB
Indicators (3):
Ethernet Link and Speed, SYNC
Power Connections (1):
Power Jack
Ambient Operating Environment:
0° C to 40° C
Power Requirement:
24 Vdc @ 100 mA, or PoE (FP-NML2P)
PoE (FP-NML2P):
Class 0, IEEE 802.3af
Dimensions:
4.85" (12.3 cm) W; 1.75" (4.45 cm) H; 3.25" (8.26 cm) D
Package Type:
Cardboard Box
Package Dimensions:
4.375 x 4.8 x 2.25 in.
Shipping Weight:
0.816 lbs. (FP-NML2); 0.816 lbs. (FP-NML2P)
WEEE weight:
0.67 lbs. (FP-NML2); 0.67 lbs. (FP-NML2P)
Tariff code:
8543.70.9100

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FLAT-PAK SERIES

FLAT-PAK products are high performance application-specific A/V, recording and broadcast modules constructed in compact, low-profile, shielded heavy duty metal chassis'. Module functions include pre-amplification, format conversion, line driving, power amplification, mixing, distribution, equalization, level control and more. The unique FLAT-PAK case can be directly screwed or bolted to cabinets or shelves. Rack mounting accessories permit mounting single or multiple FLAT-PAKs to front or rear rails. Adjacent mounting of FLAT-PAK modules is facilitated by daisy-chaining multiple modules from a single power supply using included power interconnect cables.

FLAT-PAK modules provide the most common connections in professional installations, including gold-plated jacks, detachable and fixed terminal blocks. Bold, high contrast labeling facilitates connection and adjustment in confined or dark locations. LED metering and indicators shorten setup and adjustment time. Signal connectors and switches are very high quality. Circuits are designed for studio quality performance and are engineered for extended service life.

A FLAT-PAK module may be mounted right where its function is needed. Multiple FLAT-PAK and other RDL modules can be used together to form all or part of an A/V system that precisely matches users’ needs. The high performance of these modules and the continuity in product offering and support makes FLAT-PAK modules a preferred long-term resource for system design solutions. FLAT-PAK SERIES modules are designed and manufactured in the U.S.A.

FP-NML2P FP-NML2P