Beyerdynamic Quinta MU 33

• Fully-digital audio and control
• Direct Sequence Spread Spectrum (DSSS) provides high immunity from interference and unauthorised listening, even when using other radio systems
• Wireless transmission with integrated True Diversity antenna technology for transmitting and receiving
• Three selectable frequency bands : 2.4 / 5.2 / 5.8 GHz
• Automatic or manual silent change to an interference-free frequency response acc. to EN 3000328 ETSI
• Automatic recognition of interferences in all frequency ranges
• Processor-controlled and automatic audio channel allocation of the microphone units
• Digital 128-bit encryption and additional 24-bit PIN code against unauthorised listening
• Revoluto Microphone Array Technology
• Corridor characteristic
• LED strips on both sides of the housing indicate that the microphone unit is in ready-to-talk mode
• Touch buttons with backlit illumination in 3 colours and braille
• Microphone button to switch the microphone on / off
• Clear button to switch off all activated delegate stations
• Programmable function button for different priorities or external controls
• 2 buttons to adjust the level on the headphone output
• Voice-controlled activation of the microphone possible
• High-quality aluminium housing with a non-glare matt black coating of Alexit soft-touch paint (on the rear) and touch buttons (on the front)
• Integrated two-way speakers
• The loudspeaker is turned off when the microphone is activated
• Adjustable mini stereo jack output (3.5 mm) as documentation or headphones
• Parameters can be programmed via the control unit and the appropriate configuration software
• Automatic Power OFF when the control unit is in the stand-by mode or switched off
• Power on LED
• Charging status of the battery can be monitored and transmitted to the control unit
• Operating control LED indicates the status when the minimum capacity is too low
• Charging contacts for charging the integrated rechargeable batteries in the charging unit
• Reliable processor-controlled charging electronics avoids memory effect and ensures immediate use of the microphone units
• LED strip on the side of the housing indicates the charging status and the power on LED on the rear indicates the use of an external power adapter
• Maximum charging time of 2.5 hours when the battery (NiMH) is completely empty
• DC connection for battery recharging or powering via external power adapter
• Minimum operating time 20 hours

General
Frequency range . . . . . . . . . . . . . . . . . . 2400 - 2483.5 MHz
5150 - 5250 MHz
5725 - 5875 MHz
Modulation . . . . . . . . . . . . . . . . . . . . . . DSSS (Direct Sequence
Spread Spectrum) and
QPSK/BPSK (Quadrature/
Binary Phase Shift
Keying)
digital signal processing
acc. to own standard
Max. number of audio streams . . . . . . . 4 useable channels
per system
Signal-to-noise ratio . . . . . . . . . . . . . . . 80 dB typ.,
(unweighted
signal-to-noise ratio)
Range between microphone units
and control unit. . . . . . . . . . . . . . . . . . . > 100 m
Power supply . . . . . . . . . . . . . . . . . . . . . . 110 – 240 V AC 50/60 Hz
Approval . . . . . . . . . . . . . . . . . . . . . . . . world-wide
AVB
Transmission and reception
of audio data . . . . . . . . . . . . . . . . . . . . . acc. to IEC 61883-6
Format of the audio data . . . . . . . . . . . . AM824
Stream ID Quinta CU . . . . . . . . . . . . . . . Bit 63 - 16 /
MAC address
Microphone Units
Microphone. . . . . . . . . . . . . . . . . . . . . . Microphone Array
Pick up pattern . . . . . . . . . . . . . . . . . . . Corridor
T.H.D. . . . . . . . . . . . . . . . . . . . . . . . . . . < 0.1%

Transmitter power . . . . . . . . . . . . . . . . . max. 20 dBm per
channel (average,
duty cycle ≤ 30%)*
Battery voltage . . . . . . . . . . . . . . . . . . . 8 NiMH cells, 2080 mAh
External DC operation . . . . . . . . . . . . . . 15 V DC (±0.5 V),
residual hum < 20 mV,
400 mA
Charging time with charger. . . . . . . . . . max. 2.5 hours when the
battery is completely
empty
with mains charger adapter. . . . . . . . . . max. 2.5 hours when the
battery is completely
empty
Loudspeaker . . . . . . . . . . . . . . . . . . . . . Integrated, two-way
loudspeaker
Loudspeaker switch off at “Mic On” . . . yes
Headphone output. . . . . . . . . . . . . . . . . . jack socket
(3.5 mm, stereo)
Min. impedance . . . . . . . . . . . . . . . . . . 16 Ω
Power supply. . . . . . . . . . . . . . . . . . . . . 9.6 V with integrated
NiMH battery (8 cells)
Operating time depending on the type
of the microphone unit . . . . . . . . . . . . . min. 20 hours in
discussion mode;
operating time depends
on the volume
Temperature range
(at < 90% humidity) . . . . . . . . . . . . . . . +10 °C – +40 °C
Storage temperature
(at < 90% humidity) . . . . . . . . . . . . . . . -20 °C – +55 °C
Minimum impedance. . . . . . . . . . . . . . . 8 Ω
Dimensions (L x H x D). . . . . . . . . . . . . . 300 x 82 x 96 mm
Weight . . . . . . . . . . . . . . . . . . . . . . . . . approx. 1061 g