Product Specification SL Headmic Set

PRODUCT SPECIFICATION
SpeechLine Digital Wireless
SL Headmic Set
5/6
ARCHITECT‘S SPECIFICATION
A wireless RF transmission system designed for presen-
tation use and other applications where maximum speech
intelligibility is required.
The system shall consist of a stationary receiver, a bo-
dypack transmitter and a condenser headset microphone.
Operating in the license-free 1.9 GHz band (frequency ran-
ges are between 1,880 and 1,930 MHz, depending on coun-
try-specific regulations), the system shall use automatic
frequency management to determine the best free avai-
lable frequency and to automatically start the transmis-
sion. Additionally, the system shall incorporate automatic
interference management, allowing the transmitter and
receiver to move to an undisturbed, compatible frequen-
cy 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 spe-
ech-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 chan-
nel shall be adaptive and up to 250 mW (country-specific).
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 opti-
mization. Two reverse SMA sockets shall be provided for
connecting the antennas.
The receiver shall feature RJ-45 network connectivity com-
patible 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 opera-
ting time of 15 hours or with an optional battery case for
two 1.5 V AA size batteries. The accupack can be quick-
ly 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 adapti-
ve 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 trans-
mitter 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.