Beyerdynamic STEGOS Features And Specifications

STEGOS

Digital Wireless Boundary Microphone Set

APPLICATIONS

The wireless Stegos system consists of receiver and boundary
microphone and has been specially developed for the use with video
conference systems. In neighbouring rooms a maximum of three
Stegos systems can simultaneously be operated independing from
each other.
The receiver provides three different connections for video
conference systems: 3-pin Phoenix terminal strip, mini jack (3.5 mm)
and 3-pin XLR. The individual microphone signals can be picked up
via a multipin Phoenix terminal strip. An RS 232 interface and USB
connector are provided for the data exchange with media control
systems or PC. The channels LEDs indicate which channel is
occupied (red) and which channel is available (green).
With a PC connected to the receiver the volume of the individual
microphones and the operating modes On/Off or Push-To-Mute can
be selected with the supplied, user-friendly Stegos software.
For internal agreements the function “Global Mute” allows muting
all microphones simultaneously by pressing the button of just one
microphone. The battery status of the microphones is also
displayed. The individual channel settings are stored when the
receiver is turned off.
A maximum of four boundary microphones can be operated with
one receiver. The boundary microphone provides a semi-cardioid
polar pattern with a high gain before feedback. The microphone is
powered via integrated rechargeable NiMH batteries. The operating
time is not less than 14 hours. The microphone can be recharged
or permanently operated via a power supply unit connected to the
DC connector. The maximum charging time is 2 hours. An LED
on the rear of the microphone indicates the battery and charging
status.

FEATURES

• For use with standard video conference systems

• Wireless transmission in the approved frequency range of 2.4 GHz

• Immune against radiation of mobile communication devices due
to the patented Scudio™ technology

• High noise immunity and safe against unauthorised
listening due to Spread-Spectrum and 128-bit encryption key

• eco-friendly due to:
– Rechargeable NiMH batteries, automatic switch-off
– Low energy consuming receiver
– Eco friendly production in Germany
– Eco friendly disposal, especially of the rechargeable battery cells
– Compliant with RoHS and WEEE

Receiver

• Power on / Status LEDs for a maximum of four microphone channels

• Flush switch for RF band switching with LED

• Standby button to turn off the microphones

• Headphone connector with volume control to listen to individual
microphone channels or the mix signal

• USB connector and RS 232 interface for external
operation/monitoring via PC

• Open protocol for the connection of standard media control
systems (e.g. AMX®, Crestron®)

• Connection to video conference system via 3-pin Phoenix
terminal strip, mini jack (3.5 mm) or 3-pin XLR

• Selector switch for line/microphone level

• Phoenix terminal strip to pickup individual microphone signals
e.g. for the use of external DSP devices

• Two antenna connections for antenna diversity
(one Rx and one Tx/Rx antenna)

Microphone

• Semi-cardioid polar pattern

• Illuminated multifunction button

• Manual or Push-To-Mute operating mode

• Power on LED / Charging LED

• Operating time of max. 14 hours

• DC connector for power supply operation and charging

beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. [phone] / 617 - 0 | Fax [phone] / 617 - 199
[e-mail] | www.beyerdynamic.com

For further distributors worldwide, please go to www.beyerdynamic.com
Non-contractual illustrations. Contents subject to change without notice. E1 / Stegos (06.10)

1 of 4

Stegos receiver (RS) - front view

Stegos receiver (RS) - rear view

Stegos boundary microphone (TB)

ACCESSORIES

• Angled rod antennae (2 supplied with each receiver)

• Remote antennae (optional)

• Antenna cables and accessories (optional)

• AC adapter and charger (supplied with the microphone)

Stegos

beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. [phone] / 617 - 0 | Fax [phone] / 617 - 199
[e-mail] | www.beyerdynamic.com

For further distributors worldwide, please go to www.beyerdynamic.com
Non-contractual illustrations. Contents subject to change without notice. E1 / Stegos (06.10)

2 of 4

TECHNICAL SPECIFICATIONS

General

Frequency range. . . . . . . . . . . . . . 2400 – 2483.5 MHz

(ISM Band)

Bandwidth . . . . . . . . . . . . . . . . . . 22MHz

Modulation . . . . . . . . . . . . . . . . . Direct Sequence Spread

Spectrum DSSS

Transmission protocol . . . . . . . . . . Digital signal processing acc.

to own standard,

128 bit encryption
Max. number of audio channels . . 4 usable channels per system

Signal-to-noise ratio . . . . . . . . . . . 80 dB (digital transmission

network)

Transmitter power . . . . . . . . . . . . max. 20 dBm

Range between TB and RS . . . . . . > 100 m (328 ft) at line of sight

Approval . . . . . . . . . . . . . . . . . . . world-wide

Acoustical boundary microphone (TB)

Transducer type . . . . . . . . . . . . . . Condenser (back electret)

Operating principle. . . . . . . . . . . . Pressure gradient

Polar pattern . . . . . . . . . . . . . . . . Semi-cardioid

Frequency response . . . . . . . . . . . 20 Hz – 12 kHz

Dynamic range . . . . . . . . . . . . . . . 68 dB (A-weighted)

Open circuit voltage . . . . . . . . . . . 300 mV/Pa

Max. SPL at 1 kHz. . . . . . . . . . . . . 100 dB SPL

RFI proof . . . . . . . . . . . . . . . . . . . Scudio™ technology

Power consumption . . . . . . . . . . . approx. 100 mA

(microphone open)

Power supply . . . . . . . . . . . . . . . . 4.8 VDC via integrated

NiMH rechargeable batteries

(4 cells, each with 2100 mAh)

Operating time . . . . . . . . . . . . . . . 14 hours at least;

DC powered permanent

operation possible with

CA 2458 charging power

supply unit
Charging time with power

supply unit (15 VDC, 1.6 A) . . . . . max. 2 hours

Temperature range

(at < 90% humidity) . . . . . . . . . . . +10 °C – +40 °C

(+50 °F – +104 °F)
Storage temperature

(at < 90% humidity) . . . . . . . . . . . -20 °C – +55 °C

(-4 °F – +133 °F)

Dimensions (L x W x H) . . . . . . . . . approx. 138 x 76 x 38 mm

(5.4 x 3 x 1.5 in)

Weight . . . . . . . . . . . . . . . . . . . . . approx. 410 g (0.9 lbs)

Receiver (RS)

Connections (on the rear)
Balanced, per channel

(+6 dBu) . . . . . . . . . . . . . . . . . . . . Phoenix terminals (4x3)

Balanced, Mix Signal

(+6 dBu/-10dB switchable) . . . . . . Phoenix terminals / XLR (male) /

mini jack (3.5 mm)

Monitor headphone output . . . . . 1/4" jack (6.35 mm)

Media control / Service . . . . . . . . . RS 232, 57.6 kbps, 8-N-1

Media control / PC . . . . . . . . . . . . USB, type B (on the front)

Tx/Rx and Rx antennae . . . . . . . . . 2 N(HF)-connectors (socket)

Power connection. . . . . . . . . . . . . IEC power connection,

incl. power cable 1.5 m (4,9 ft)
Power supply unit

Voltage supply . . . . . . . . . . . . . . . 100 – 240 VAC, 50/60 Hz

Fuse . . . . . . . . . . . . . . . . . . . . . . . 0.5 A, slow-blow

Power consumption . . . . . . . . . . . typ. 3 W, max. 5 W

Indicators (on the front)

Power. . . . . . . . . . . . . . . . . . . . . . LED (green)

Channel (active/occupied). . . . . . . 4x LED (green/red))

Frequency range. . . . . . . . . . . . . . 3x LED (green)

Monitor selection (Channel / Mix) . . 5x LED (green)
Controls (on the front)

Standby microphones . . . . . . . . . . Push button

Selection RF band . . . . . . . . . . . . . Flush button

Volume control monitor-headphone
with monitor channel selection. . . Rotary potentiometer with

push button
General
Temperature range

(at < 90% humidity) . . . . . . . . . . . +10 °C – +50 °C

(+50 °F – +122 °F)
Storage temperature

(at < 90% humidity) . . . . . . . . . . . -20 °C – +55 °C

(-4 °F – +131 °F)

Dimensions (L x W x H) . . . . . . . . . 19", 1 U (238 x 450 x 44mm /

9.4 x 17.7 x 1.7 in)

Weight . . . . . . . . . . . . . . . . . . . . . 2.5 kg (5.5 lbs)