Beyerdynamic QUINTA MU 33
Quinta Chairman Microphone Unit with Revoluto Technology


The Quinta MU 33 chairman microphone unit is equipped with a clear, function...
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Beyerdynamic QUINTA MU 33
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The Quinta MU 33 chairman microphone unit is equipped with a clear, function, and a microphone button in the housing with which the participant can switch his microphone on and off. Additionally the unit features two buttons to adjust the level on the headphone output. The Revoluto microphone array technology with integrated microphone capsules provides a so-called corridor characteristic which ensures a wide range of good voice quality. The speaker can move freely, i.e. can stand up or sit down, can move his/her head and move towards or away from the microphone unit. The chairman microphone unit does not depend on the maximum number of simultaneous open microphones. Unlike the delegate microphone units the chairman microphone unit is not controlled by Automatic Channel Allocation, but has an extra transmitting channel exclusively for the chairman. The ready-to-talk status of the microphone is indicated by the red LED strips on both sides of the housing.

Using the clear butto all switched-on microphones of the delegate microphone stations are switched off.

With the function button there are various configurations possible via the “Quinta Conference” software:

Priority “Normal”
When the chairman switches his microphone on with the priority button the switched on delegate microphone units are switched off. The delegates can switch on their microphone again, when the chairman has switched off his.

Priority “Mute”
When the chairman switches his microphone on with the priority button the switched on delegate microphone units are muted as long as the chairman is speaking. If the chairman switches his microphone off, all delegate microphone units that had been switched on before, are switched on again.

Priority “Clear”
When the chairman switches his microphone on with the function button and the priority programming “Normal” the switched on delegate microphone units are switched off. Afterwards the delegates can switch on their microphone and take part into the discussion again, while the chairman's microphone is still switched on.

A command is sent via the RS 232, USB, TCP/IP serial interface from the Quinta CU control unit and a programmed function is carried out via a media control system for instance (e.g. light control). For the other functions there is also a command sent via the RS 232, USB, TCP/IP serial interface from the Quinta CU control unit.

Command A/B
Two different commands according to the duration of the push:

  • < 1 second = command “Short press string” is transmitted
  • > 1 second = command “Long press string” is transmitted

These commands can be set individually with the “Quinta Conference” software.

Audio Mute
An audio signal, e.g. from a wireless microphone, can be switched off. This function can be combined with a “Clear” command to switch off activated delegate microphones.

Depending on the configuration with the “Quinta Conference” software, the following operating modes are available:

Voice activation: the microphone is switched on, when someone speaks into it.

Push-To-Talk: the microphone button must be held down, while the participant is speaking.

The integrated loudspeaker reproduces the audio signal of the whole conference system. Depending on the audio signal routing in the control unit the loudspeaker can reproduce other audio signals such as a wireless microphone in the auditorium. The parameters of the microphone unit are adjusted via PC by using the “Quinta Conference” software. The parameters are set for all microphone units.

The volume of the loudspeaker is adjusted and can be controlled with the Quinta control unit or a media control system. Each microphone unit has its own address. An existing system can be complemented at any time.

The DSSS transmission offers high immunity against unauthorised listening with a 128-bit encryption. In addition to this, the conference system including the appropriate microphone units can be protected with PIN code (24-bit). A microphone unit that does not have the correct PIN code will be identified by the control unit and switched off immediately.

The integrated rechargeable battery allows an operation of the microphone unit of 20 hours depending on the amount of participation in the discussion. As soon as the remaining battery time is below a certain threshold of 1 hour, the power on LED on the rear of the microphone unit will flash or if the system is controlled by PC or a media control system, the low battery capacity can also be displayed. The charging time of a completely empty battery is max. 2.5 hours with the integrated processor-controlled charging electronics. Depending on the use of the microphone unit the charging time can be less.

As an option the microphone unit can be powered and charged by a DC power supply adapter.

Beyerdynamic QUINTA MU 33 Features:

  • Fully-digital audio and control
  • Direct Sequence Spread Spectrum (DSSS) provides high immunity from interference and unauthorized 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 unauthorized 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

Beyerdynamic QUINTA MU 33 Specifications:

  • 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 Ohm
  • 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 Ohms
  • Dimensions (L x H x D): 11.81" x 3.23" x 3.78"
  • Weight: approx. 2.34 Lbs

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