Product Specification

PRODUCT SPECIFICATION
SpeechLine Digital Wireless
SL DI 4 XLR - Analog to digital audio converter
1/4
FEATURES
• 4 XLR balanced and RF filtered mic/line inputs
• Gain is individually adjustable per channel via software
• 802.3af compliant PoE powered to work with any
compliant PoE network switch, or an external +12 V DC
supply
• +48 V phantom power - powers virtually all types
of phantom powered microphones typically used in
installed AV systems. Phantom power is switchable per
channel via software
• ID LED allows easy identification of the SL DI 4 XLR
• Dante™ Daisy Chaining allows multiple SL DI 4 XLRs to
be connected over a single home-run to the Ethernet
switch
The SL DI 4 XLR four input Dante™ preamp is the ideal
interface for wireless microphone receivers and adding
mic/line inputs to a Dante™ system. The small form factor
of the SL DI 4 XLR allows them to be mounted almost any-
where, putting them close to audio sources and minimizing
interference-prone analog wiring.
The SL DI 4 XLR features four balanced mic/line inputs,
each with software selectable +48 V phantom power and
different gain levels.
Front panel indicators show each channel’s gain and
phantom power status for easy troubleshooting. The
SL DI 4 XLR has two network connections to allow Dante™
Daisy Chaining. Dante™ Daisy Chaining further simpli-
fies system infrastructure wiring by allowing multiple
SL DI 4 XLRs to use a single CAT 5 home run connection
to a network switch. Power can also be daisy chained. The
SL DI 4 XLR is powered by either external +12 V DC or any
PoE network switch. All adjustable parameters, like mic/
line gain and phantom power, are software controlled.
ARCHITECT‘S SPECIFICATION
The unit shall be a Dante™ interface for use with
Sennheiser SpeechLine microphone receivers and shall
be designed to add analog mic/line inputs to a Dante™
system. The unit shall feature four balanced and RF filtered
mic/line inputs on female XLR-3 connectors. Gain settings
of 0 dB, +15 dB, +30 dB, and +45 dB, as well as a 10 dB
pad and a +48 V phantom power option shall be provided
for each input and shall be software selectable. The unit’s
front panel shall feature status LEDs indicating gain/pad
settings and phantom power status for each of the four
inputs.
The unit shall provide two RJ-45 Ethernet connectors to
allow Dante™ daisy chaining (DDC) of multiple units. The
internal analog-to-digital signal conversion shall be per-
formed at 24-bit resolution with a sampling rate of 48 kHz.
Transmission speed shall be 100 Mbps.
Audio frequency response shall range from 20 – 20,000 Hz.
Input impedance shall be > 1.8 kΩ at any gain setting.
Equivalent input noise shall be -113 dBu. Maximum input
levels (without 10 dB pad) shall be +8 dBu @ 0 dB gain,
-7 dBu @ +15 dB gain, -22 dBu @ +30 dB gain, and -36 dBu
@ +45 dB gain. With the pad engaged, maximum input lev-
els shall be 10 dB higher. The system THD plus noise shall
be < 0.02 % at any gain setting (input signal 3 dB below
maximum).
The unit shall be powered over the CAT5 Ethernet cable
from an 802.3af PoE compliant network switch or from an
external +12 V DC power supply. The unit shall support dai-
sy chaining of two units when powered via PoE and shall
accept daisy chaining of up to three units when powered
via an external +12 V DC power supply. Power consumption
shall be 2.7 W (225 mA) @ +12 V DC without phantom pow-
er and 5.5 W (460 mA) @ +12 V DC with a 10 mA phantom
power load per input.
The unit shall have a rugged metal housing with integrated
mounting brackets; dimensions (W x H x D) shall be 219 x
38 x 120 mm (8.63" x 1.50" x 4.74"). Weight shall be 0.77 kg
(1.7 lbs). Operating temperature shall range from 0 °C to
40 °C (32 °F to 104 °F).
The unit shall be compatible with Sennheiser software for
flexible control and monitoring in system applications.
The unit shall be the Sennheiser SL DI 4 XLR.