Page 1
PRODUCT SPECIFICATION
SpeechLine Digital Wireless
SL Headmic Set
FEATURES
• Automatic frequency and interference management
• Excellent speech intelligibility
• Outstanding sound quality, omni-directional
• Extremely lightweight, but sturdy metal frame
• Sleek and unobtrusive appearance
• Lockable 3.5 mm jack socket
• Secure 256 bit AES encryption
The SL Headmic Set comes with the the brand new SL
Headmic 1 condensor headworn microphone, the bodypack
transmitter, stationary receiver and everything to use or
install.
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The SL Headmic 1 is very sleek, robust and wheighs only
7g without the cable. The black and silver design almost
disappears in the environment while still offering the best
sound perfomance.
All sets also come with rechargeable accupacks with up to
15 hrs of operating time. The accupack is also USB rechargeable, the cable is in the box, the USB socket is presumably just a step away from you.
The two types of sets are either Rackmount Sets (-R version), which come with everything needed for rack mounting, or Case Sets (-C version), in a transport case – without rackmounts, if you do not want to install the receiver.
ACCESSORIES
CHG 2 EU Art. No. 505980
CHG 2 UK Art. No. 506218
CHG 2 US Art. No. 506219
CHG 2 AU Art. No. 506220
CHG 4N EU Art. No. 506800
CHG 4N UK Art. No. 506801
CHG 4N US Art. No. 506802
CHG 4N AU Art. No. 506803
DELIVERY INCLUDES
• SL Headmic 1 SB
• SL Bodypack DW
• BA 30 accupack
• SL Rack Receiver DW (incl. power supply)
• Case (-C version) or GA 4 rackmount kit (-R version)
• Pouch
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)
Page 2
SPECIFICATIONS
PRODUCT SPECIFICATION
SpeechLine Digital Wireless
SL Headmic Set
2/6
SL Rack Receiver DW
RF sensitivity < -90 dBm
RF output power back
channel
XLR output level,
balanced
RCA output level,
unbalanced
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
Weight approx. 828 g
adaptive, up to 250 mW
(country-specific)
max. +18 dBu
max. +6 dBu
-3 dB at 120 Hz
Equalizer:
Sound profiles:
TCP/IP IPv4 (DHCP, manual)/
IPv6
hollow jack
7-band graphic
equalizer with
sound presets
• female voice
• male voice
• instrument/
media
Power supply units
NT 12-4C NT 2-3
Nominal input voltage 100 to 240 V–
Power frequency 50 or 60 Hz
Input current max. 120 mA
Nominal output voltage 12 V
Standby power
consumption
Energy efficiency level V IV
Operating temperature -10 °C to 55 °C (14 °F to 131 °F)
Storage temperature -20 °C to +70 °C (-4 °F to 158 °F)
Relative air humidity max. 95 %
Weight approx. 100 g approx. 105 g
≤ 0.3 W
Accupack
BA 30
Charging capacity 2030 mAh
Output voltage 3.7 V
SL Bodypack DW
RF output power adaptive, up to 250 mW
(country-specific)
AF frequency response Mic:
Line:
Max. input level Mic:
Line:
Line input impedance 1 MΩ
Input sensitivity automatic sensitivity adjust-
ment
Power supply Accupack:
Batteries*:
Operating time Accupack
Batteries*:
AF connection socket 3.5 mm jack socket, lockable
Mic
Weight (w/o accupack) approx. 88 g
* optional accessory
50 to 20,000 Hz
20 to 20,000 Hz
2.2 V RMS
3.3 V RMS
BA 30
(Li-Ion, 3.7 V)
2 x AA size
battery (1.5 V)
typ. 15 h
typ. 11 h
Line
Microphone
SL Headmic 1
Microphone type pre-polarized condenser
microphone
Sensitivity 5 mV/Pa
Pick-up pattern omni-directional
Max. SPL 142 dB SPL
Page 3
DIMENSIONS
SL Rack Receiver DW
PRODUCT SPECIFICATION
SpeechLine Digital Wireless
SL Headmic Set
3/6
Page 4
DIMENSIONS
Kabel mit 3,5 mm Klinkenstecker / cable with 3.5 mm jack plug
SL Bodypack DW
PRODUCT SPECIFICATION
SpeechLine Digital Wireless
SL Headmic Set
4/6
SL Headmic 1
64.91
[ca. 1600mm]
2. 24
R
ca . R 57 mm
Signal
4.85
ca. 123mm
Page 5
PRODUCT SPECIFICATION
SpeechLine Digital Wireless
SL Headmic Set
ARCHITECT‘S SPECIFICATION
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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 bodypack transmitter and a condenser headset microphone.
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).
The receiver’s audio output shall utilize a balanced XLR3M 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 transmitter 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 1.5 V 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 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 headset
microphone shall be the Sennheiser SL Headmic 1.
All devices can be monitored and controlled with the
Sennheiser Control Cockpit.
The wireless RF transmission system shall be the
Sennheiser SpeechLine Digital Wireless SL Headmic Set.
Page 6
PRODUCT SPECIFICATION
SpeechLine Digital Wireless
SL Headmic Set
PRODUCT VARIANTS
Set Art. no. Power supply / Set version Frequency range Countries
SL HEADMIC SET DW-3-EU C 505880 EU power supply / Case 1,880 – 1,900 MHz Europe, India Indonesia
SL HEADMIC SET DW-3-UK C 505890 UK power supply / Case 1,880 – 1,900 MHz UK, Hong Kong,
Singapore, Malaysia
SL HEADMIC SET DW-3-AU C 506162 AU power supply / Case 1,880 – 1,900 MHz Australia
SL HEADMIC SET DW-4-US C 505897 US power supply / Case 1,920 – 1,930 MHz USA, Canada
SL HEADMIC SET DW-4-EU C 506169 EU power supply / Case 1,920 – 1,930 MHz Latin America
SL HEADMIC SET DW-5-US C 505917 US power supply / Case 1,893 – 1,906 MHz Japan
SL HEADMIC SET DW-6-US C 505907 US power supply / Case 1,880 – 1,895 MHz Taiwan
SL HEADMIC SET DW-7-BR C 506701 BR power supply / Case 1,910 – 1,920 MHz Brazil
SL HEADMIC SET DW-3-EU R 505887 EU power supply /
Rackmount
SL HEADMIC SET DW-3-UK R 505894 UK power supply /
Rackmount
SL HEADMIC SET DW-3-AU R 506166 AU power supply /
Rackmount
SL HEADMIC SET DW-4-US R 505904 US power supply /
Rackmount
SL HEADMIC SET DW-4-EU R 506173 EU power supply /
Rackmount
SL HEADMIC SET DW-5-US R 505924 US power supply /
Rackmount
SL HEADMIC SET DW-6-US R 505914 US power supply /
Rackmount
SL HEADMIC SET DW-7-BR R 506708 BR power supply /
Rackmount
1,880 – 1,900 MHz Europe, India Indonesia
1,880 – 1,900 MHz UK, Hong Kong,
Singapore, Malaysia
1,880 – 1,900 MHz Australia
1,920 – 1,930 MHz USA, Canada
1,920 – 1,930 MHz Latin America
1,893 – 1,906 MHz Japan
1,880 – 1,895 MHz Taiwan
1,910 – 1,920 MHz Brazil
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