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Description
- Converts Dante to Constant Voltage
- 50W Class-D RMS Power at 70 or 100V
- RJ45 Input, Gain-Adjustable Line Input
- Terminal Block & Line Outputs
- Supports VCA Control & Automatic Ducking
- Up to 24-Bit/96 kHz Resolution
- Thermal & Short-Circuit Protection
- Power via Included 24 VDC Power Supply
- Durable Metal Enclosure
- Made in the USA
The RDL SF-NP50AX is a SysFlex series 50W Dante to 70/100V mono audio amplifier designed to convert one Dante input and an analog input to a constant voltage amplified output for A/V technicians, system installers, and audio engineers in office buildings, retail environments, and educational facilities. Its Class-D output stage delivers 50W of RMS power at 70 or 100V from an analog input and one Dante stream at up to 24-bit/96 kHz resolution.
A single RJ45 input accepts a Dante network audio channel while a gain-adjustable analog source may be routed to the balanced mono terminal block input or the unbalanced 3.5mm stereo mini jack. Selectable-priority automatic ducking allows attenuation or muting of the non-paging signal, making it ideal for announcements. Outputs include two terminal blocks�one accommodates connection to 70 or 100V speakers, and the other sends a balanced line-level signal. A detachable terminal block is provided for hookup of remote control of the internal VCA. Thermal and short-circuit protection guard against electrical damage and unintended shutdown.
The SF-NP50AX supports powering via the included 24 VDC external power supply (power cord available separately), or from proper wiring to the terminal block power input. Engineered and manufactured in the USA, it boasts a durable metal enclosure for reliable toughness.
- Converts one Dante network audio channel and an analog audio input to a 70 or 100V constant voltage amplified output
- Provides 50 watts for a network digital audio level of 0 dBFS
- Configuration requires no special software
- High-efficiency Class-D output stage produces minimal heat for all levels of expected voice or music modulation
- RJ45 port for Dante input
- Balanced mono terminal block input
- Unbalanced 3.5mm stereo mini jack automatically sums the left and right channels to mono
- Input gain is set by the installer using a rear-panel, single-turn potentiometer with an associated dual-LED VU meter calibrated to 20 dB below maximum power output
- Paging source may be the analog input or the network audio input
- Ducking with adjustable threshold, automatic detection circuit, switchable priority, and selectable 25 dB attenuation or mute function
- Dante network audio source drives a balanced line-level output on a detachable terminal block to feed the inputs of other audio equipment or power amplifiers
- Supports powering via the included 24 VDC external power supply or 24V connection to the dedicated terminal block power input
- LED Mute indicator glows yellow when the output is muted
- Valid synchronization to the Dante network is indicated by a green LED visible from the front of the unit
- Amplifier power is monitored and the current is limited to protect the power supply against shutting down, even during extreme feedback or square wave modulation conditions
- Red rear-panel LED flashes when the SF-NP50AX reduces power consumption to prevent shutdown of the power supply
- Equipped with an internal VCA for setting the output level
- Detachable terminal block provides for the connection of an external 10-kOhm potentiometer or a 0 to 10 VDC control voltage
- Amplifier gain remains at maximum when the VCA input terminal is not connected
- RDL remote controls are available to provide single-turn, multi-turn (rotary encoder), or button (ramp or fixed-level selection) user level control
- Constructed in a durable all-metal enclosure suitable for free-standing, surface-mounted, or rack-mounted operation
- Engineered and manufactured in the USA for continuous duty in demanding installations
| Inputs | 1 x RJ45 1 x 1/8" / 3.5 mm stereo mini jack (unbalanced) 1 x detachable terminal block (balanced) |
| Outputs | 1 x terminal block for 70/100 V output 1 x detachable terminal block for line output |
| Control | 1 x detachable terminal block for VCA control |
| Amplifier | Class-D |
| Amplifier Output | 50 W RMS (70 or 100 V) |
| Ethernet Protocol | Dante |
| Transmission Rate | 100 Mb/s |
| Bit Depth | 24 |
| Sample Rates | 44.1, 48 (default), 88.2, and 96 kHz |
| Reference Level | 0 dBFS = 50 W |
| Maximum Input Level | Balanced: +25 dBu (before clipping) Unbalanced: +10 dBV (before clipping) |
| Nominal Input Level | Balanced: +4 dBu (adjustable) Unbalanced: -10 dBV (adjustable) |
| Minimum Input Level | Balanced: -10 dBu (for 20 dB below full output power) Unbalanced: -25 dBV (for 20 dB below full output power) |
| Gain Adjustment | Single-turn audio taper (with associated dual-LED VU meter calibrated to 20 dB below full output power) |
| Output Level | +4 dBu for a network level of -20 dBFS |
| Input Impedance | Balanced: > 10 kOhms Unbalanced: > 5 kOhms |
| Common Mode Rejection | > 60 dB (50 to 120 Hz) |
| Frequency Response | 50 Hz to 20 kHz (+0 / -3 dB) |
| THD + N | < 1% (1 kHz) |
| Noise | Below Maximum Power: < -85 dB Below 1/8 Power: < -75 dB |
| VCA | 0 to 10 VDC control via detachable terminal block (compatible with RDL VCA wall controls) |
| Ducking/Muting | Source: Switch-selectable priority for network or analog input Level: Switch-selectable for 25 dB ducking attenuation (nominal) or off |
| Ducking/Muting Actuation | Automatic (rear-panel adjustable signal threshold with LED indicator) |
| Ducking/Muting Release Delay | 4 seconds, nominal |
| Ambient Operating Environment | 32 to 104°F / 0 to 40°C (68°F / 20°C recommended) |
| Indicators | Front-Panel: Sync (green), amplifier muted (yellow) Rear-Panel: Overload protect (red), Ethernet link and speed (two), dual-LED VU meter (two), ducking threshold |
| Plenum Number | UL 2043 |
| Power Requirements | 24 VDC at 2700 mA via 100 to 240 VAC, 50-60 Hz, IEC C14 power supply or connection to terminal block power input |
| Enclosure Material | Metal |
| Dimensions (W x H x D) | 5.8 x 1.7 x 6.4" / 14.8 x 4.3 x 16.4 cm |
| Weight | 3.9 lb / 1.8 kg |
| Country of Manufacture | United States of America |
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Bulk Discount
| Quantity | Price |
| 2 | ₹ 101454.5 |
| 3-5 | ₹ 100419.25 |
| 5-10 | ₹ 98348.75 |
| 10+ | ₹ 96278.25 |
Bulk discount will be automatically applied during checkout based on quantity.