Sennheiser SpeechLine DW Datasheet
SpeechLine Digital Wireless
SpeechLine DW
FEATURES
• Automatic frequency and interference management
• Speech optimized gain automatics
• License free 1.9 GHz frequency range
• Secure 256 bit AES encryption
• Remote control via Ethernet
• Advanced power management and Li-Ion rechargeables
• Up to 20 channels per range
SpeechLine Digital Wireless is a presentation solution
dedicated to speech. The digital wireless microphone system is a future-proof solution that’s easy to set up, use and manage. A microphone which lets the presenter concentrate on their words, not on
the technology.
SpeechLine Digital Wireless comprises of mobile transmitters (handheld or bodypack) tailored for presentation, speech optimized microphone capsules (condenser capsules, lavalier or headworn microphone) and an easy-to-integrate stationary receiver. For convenience,
the system relies on lithium-ion technology with a battery lifetime of
more than 15 h and flexible charging solutions of multi-device chargers or USB-charging on the fly. Thanks to the Automatic Frequency
Management, the system always finds a free frequency (no frequency planning is necessary anymore). The Automatic Interference Management always maintains a stable connection, which makes the
system very reliable. The Automatic Sensitivity Management makes
the setup even more convenient, no more gain settings are required.
With seamless network integration the system can be controlled via
AMX, Crestron or a dedicated remote control app available for iOS or
Android, which makes SpeechLine DW easy to monitor and to manage.
System Specification
For secure communication, SpeechLine Digital Wireless uses the secure advanced 256-bit AES encryption for secure wireless transmission.
Due to the 1.9 GHz frequency range SpeechLine DW is the future proof investment and already DD ready. Moreover, the 1.9 GHz is license
free and requires no registration.
ARCHITECT‘S SPECIFICATION
A wireless RF transmission system designed for presentation use and other applications where maximum speech intelligibility is required.
The system shall consist of a stationary receiver, a handheld transmitter with a condenser microphone head and a bodypack transmitter with
a condenser clip-on or headset microphone and shall be available in different sets of receiver/transmitter/microphone combinations.
Operating in the license-free 1.9 GHz band (frequency ranges are between 1,880 and 1,930 MHz, depending on country-specific regulations),
the system shall use automatic frequency management to determine the best free available frequency and to automatically start the transmission. Additionally, the system shall incorporate automatic interference management, allowing the transmitter and receiver to move to an
undisturbed, compatible frequency with no audio signal interruption, should interference occur. Furthermore, advanced 256-bit AES encryption shall be used for secure wireless transmission.
The system’s AF frequency response shall range from 20 – 20,000 Hz. The dynamic range shall be > 120 dB(A). Total harmonic distortion (THD)
at 1 kHz shall be typical 0.1 %. Signal-to-noise ratio shall be > 90 dB(A). Latency shall be 19 ms. Operating temperature shall range from -10 °C
to +55 °C (+14 °F to +131 °F).
The user interface of the receiver shall be operated by jog dial and OLED display. The receiver shall have dedicated pairing, escape and power
buttons.
The receiver shall feature a low-cut filter as well as speech-optimized sound profiles or custom settings with a 7-band graphic equalizer. The
receiver’s RF sensitivity shall be -90 dBm. RF output power of the receiver’s back channel shall be adaptive and up to 250 mW (country-specific).
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SpeechLine Digital Wireless System Specification
Architect's Specification continued
The receiver’s audio output shall utilize a balanced XLR-3M socket with a maximum output of +18 dBu along with two unbalanced RCA sockets
with a maximum output of +6 dBu. The receiver shall feature automatic gain optimization. Two reverse SMA sockets shall be provided for
connecting the antennas.
The receiver shall feature RJ-45 network connectivity compatible with IPv4 and IPv6 networks. For remote control the receiver shall have media
control protocol integration.
The receiver shall operate on 12 V DC power supplied from the NT 12-4C power supply unit (100-240 V AC, 50/60 Hz, for use in the USA, the
UK, and Europe) or the NT 2-3 power supply unit (100-240 V AC, 50/60 Hz, for use in countries other than the USA, the UK, and Europe). Power
consumption shall be 350 mA. The dimensions shall be approximately 168 x 212 x 43 mm (6.61" x 8.35" x 1.69"). Weight shall be approximately 828 grams (1.83 lbs). The receiver shall be the Sennheiser SL Rack Receiver DW.
The transmitters shall be powered by either one Sennheiser Lithium-Ion rechargeable accupack with a typical operating time of 15 hours or
with an optional battery case for two 1.5V AA size batteries. The accupack can be quickly charged through a wide variety of charging options,
including micro USB. The accupack shall have charging contacts on the outside for charging in the dedicated CHG 2 charger.
The handheld transmitter shall be equipped with a mute switch, which can be deactivated via the user interface. The handheld transmitter’s AF
frequency response shall range from 50 – 20,000 Hz. RF output power shall be adaptive and up to 250 mW (country-specific). The handheld
transmitter shall have automatic sensitivity adjustment. Dimensions shall be approximately 215 x 40 mm (8.46" x 1.57"). Weight (with microphone head, without accupack) shall be approximately 262 grams (9.24 oz). The handheld transmitter shall feature an LC display showing
wireless link name, battery status, and reception quality. The handheld transmitter shall be the Sennheiser SL Handheld DW.
The microphone head suitable for use with the handheld transmitter shall be a condenser type with a super-cardioid pick-up pattern and a
sensitivity of 1.6 mV/Pa. Maximum sound pressure level shall be 152 dB SPL. The microphone head shall be the Sennheiser MME 865-1.
The bodypack transmitter’s microphone/line input shall utilize a lockable 3.5 mm jack socket. The AF frequency response shall range from
50 – 20,000 Hz (mic) and from 20 – 20,000 Hz (line). RF output power shall be adaptive and up to 250 mW (country-specific). The maximum
input level shall be 2.2 Vrms (mic) or 3.3 Vrms (line). Input impedance shall be 1 MΩ (line). The bodypack transmitter shall have automatic
sensitivity adjustment. Dimensions shall be approximately 100 x 65 x 24 mm (3.94" x 2.56" x 0.94"). Weight (without accupack) shall be
approximately 88 grams (3.10 oz). The bodypack transmitter shall feature an LC display showing wireless link name, battery status, and
reception quality. The bodypack transmitter shall be the Sennheiser SL Bodypack DW.
The microphone suitable for use with the bodypack transmitter shall be a condenser type with an omni-directional pick-up pattern and a sensitivity of 5 mV/Pa. Maximum sound pressure level shall be 142 dB SPL. The clip-on microphone shall be the Sennheiser MKE 1 and the headset
microphone shall be the Sennheiser SL Headmic 1
The wireless RF transmission system shall be the Sennheiser SpeechLine Digital Wireless.
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SpeechLine Digital Wireless System Specification
SPECIFICATIONS
System
AF frequency response 20 to 20,000 Hz
Dynamic range > 120 dB(A)
THD (1 kHz) typ. 0.1 %
Audio sampling 24 bit/48 kHz
Signal-to-noise ratio > 90 dB(A)
Encryption AES 256
RF frequency ranges EU:
USA:
Brazil:
Taiwan:
Japan:
Modulation GFSK with back channel
Transmission method TDMA, space diversity
Latency 19 ms
Relative air humidity max. 95 %
Temperature range* Operation:
Storage:
* The temperature range is influenced by the battery characteristics
1,880 to 1,900 MHz
1,920 to 1,930 MHz
1,910 to 1,920 MHz
1,880 to 1,895 MHz
1,893 to 1,906 MHz
-10 °C to 55 °C
(14 °F to 131 °F)
-20 °C to 70 °C
(-4 °F to 158 °F)
SL Rack Receiver DW
RF sensitivity < -90 dBm
RF output power back channel adaptive, up to 250 mW
(country-specific)
Digital gain
adjustable in steps of 6 dB
Audio effects Low cut:
Display OLED
Network protocol Media Control Protocol,
Power supply 12 V DC
Current consumption 350 mA
AF connection sockets XLR/2 x RCA
Antenna sockets 2 x reverse SMA
Network sockets RJ-45
DC socket for power supply hollow jack
Weight approx. 828 g
Mic/line level
switch:
XLR, balanced:
RCA,
unbalanced:
Equalizer:
Automatic
gain control
AGC:
TCP/IP IPv4 (DHCP, manual)/
IPv6
-24 dB/0 dB
max. +18 dBu
max. +6 dBu
-3 dB at
120 Hz
7-band graphic
equalizer with
sound presets
compression/
expansion with
automatic
make-up gain
function
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