RDL SF-NP35E Datasheet

Model SF-NP35E

PoE++ Network to 35 W Mono

Audio Amplier - 70 V or 100 V

y 35 Watts RMS Constant Voltage Amplifier
y 70 V or 100 V Output
y Plenum Rated per UL 2043 Standard
y Converts One Dante Network Audio Signal to a Mono Constant Voltage Output
y Selectable Dante Sample Rates: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz
y 0 dBFS Input for 35 W Output
y Automatically limits supply current to protect against PoE++ port shutdown
y VCA Control on Detachable Terminal Block
y External Control Using 10 KΩ Potentiometer or 0 to 10 Vdc
y Compatible with RDL Remote Level Controls
y Special Software Not Required for Module Setup
y LED Indicator for Network Sync
y High-Efficiency Class D Operation
y Thermal and Short-Circuit Protection

The SysFlex® series is a family of A/V modules providing complex interface solutions at the click of a connector. SysFlex modules provide connectorized
interface between data networks and analog and digital audio devices, networked and conventional amplifiers and other application-specific solutions.
In RDL’s tradition of versatility, SysFlex modules can be used right where they are needed: Rack-mounted, Surface-mounted, or unmounted. They
are light-weight, compact and easy to install with simple, straightforward switch settings and LED indicators. Modules quickly snap into the SysFlex
rack mount and each is firmly secured with a single screw. The racking system segregates network and power wiring from the audio and digital audio
connectors. For connectorized network audio endpoints and A/V system components that provide unparalleled performance and advanced features without
giving up simplicity and ease of installation, SysFlex is the industry’s best value.

APPLICATION: The SF-NP35E is an audio power amplifier that converts one Dante network audio channel to a 70 V or 100 V constant voltage
amplified output. The output provides 35 watts for a network digital audio level of 0 dBFS. Special software is not required to configure the
module.

The SF-NP35E is equipped to operate from a PoE++ enabled network switch. The SF-NP35E may be powered from an external 24 Vdc power
supply, available separately.

If a PoE++ powered device instantaneously demands excessive power from a PoE++ port, that port can shut off its output voltage, causing
a prolonged disruption of the device operation. The SF-NP35E monitors the amplifier power and limits the current to protect the PoE++ port
against shutting down even during extreme feedback or square wave modulation conditions. A red rear-panel PORT PROTECT LED flashes
when the SF-NP35E reduces power consumption to prevent shutdown of the PoE++ port voltage.

The SF-NP35E is equipped with an internal VCA for setting the output level. A detachable terminal block provides for the connection of an

external 10 KΩ potentiometer or a 0 to 10 Vdc control voltage. The 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 pushbutton (ramp or fixed level selection)
user level control. VCA control insures long term noise-free level adjustment.

The module is equipped with both thermal and output short-circuit protection. The high-efficiency Class D output stage produces minimal heat
for all levels of expected voice or music modulation. An 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.

The SF-NP35E is constructed in a durable, professional all-metal enclosure suitable for free-standing, surface-mounted or rack-mounted
operation. This full-featured SYSFLEX product is engineered and manufactured in the U.S.A for continuous duty in demanding installations. The
versatility of SYSFLEX products adds enormous flexibility in the design and installation of professional A/V systems.

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

Model SF-NP35E

PoE++ Network to 35 W Mono

Audio Amplier - 70 V or 100 V

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.

To install the amplifier
to 1/4”- 20 all-thread
install the mounting tab
to the bottom of the unit
with the included screw.
(Position the concave
side toward the bottom
of the unit.) Attach the
all-thread through the
large hole in the mouting
tab and another piece in
the mounting hole in the
chassis flange. Secure
with nuts. (All-thread and
nuts not included)

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), 88.2 kHz, 96 kHz
Bit Depth Supported: 24 bits
Reference Level: 0 dBFS = 35 W

Power Amplifier Output: 35 W RMS (70 or 100 V)
Frequency Response: +0/-3 dB (50 Hz to 20 kHz)
THD+N: < 1% (1 kHz)
Noise: <-90 dB (below max power); <-80 dB (below 1/8 power)
Indicators (3): Front-panel: Sync (green), Amplifier muted (yel),
Rear-panel: Port Protect (red), Ethernet Link and Speed (2)
VCA: 0 to 10 Vdc control, detachable terminal block
(compatible with RDL VCA wall controls)

Cut outs and
mounting tab may be
used to suspend the
unit above the ceiling
using hanger wire.

Ambient Operating Environment: 0° C to 40° C Maximum; 20° C Recommended
Power Requirement: 24 Vdc @ 2000 mA, or PoE
PoE: Class 4, IEEE 802.3at (PoE++, 4 pairs)
Plenum Rating Standard: UL 2043

Dimensions and Weight: Height: 1.7 in. (4,32 cm);
Width: 5.83 in. (14,8 cm);
Depth: 6.45 in. (16.38 cm)
Package Type: Cardboard Box
Package Dimensions: 10.75 x 9.125 x 3.9375 in.
Shipping Weight: 3.33 lbs.
WEEE weight: 2.97 lbs.
Tariff code: 8518.50.0000

891-7565

Radio Design Labs Technical Support Centers

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