Beyerdynamic QUINTA-MU-31 Specifications

Quinta MU 31

Digital Wireless Delegate Microphone Unit

Order # 486.434

FEATURES

• 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

• 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

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beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. [phone] / 617 - 0 | Fax [phone] / 617 - 204
[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 / Quinta MU31 (01.13)

Quinta MU 31

DESCRIPTION

The Quinta MU 31 delegate microphone unit is equipped with 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 ready-to-talk status of the
microphone is indicated by the red LED strips on both sides of the
housing.
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.

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.

The microphone unit is switched on by briefly pressing the
microphone button once. There are various ways to switch off the
microphone unit:

1. Press the microphone button for 3 seconds.

2. Press the standby button of the Quinta control unit for
3 seconds to switch off all activated microphone units.

3. Switch off all microphone units via an RS 232 or TCP/IP
command from the PC or media control system.

4. Switch off the control unit; after approx. 3 minutes the
microphone unit will be switched off.

Each microphone unit has its own address. An existing system can
be complemented at any time.

ARCHITECT’S SPECIFICATIONS

The digital wireless microphone unit shall be available as delegate
version with Revoluto microphone array technology. The micro­phone unit shall provide three buttons: one for turning on/off and
two buttons for adjusting the level on the headphone output. The
DSSS modulation shall ensure high immunity from interference in
the frequency range of 2.4 / 5.2 and 5.8 GHz. The true diversity
antenna technology shall ensure highest transmission reliability. The
digital 128-bit encryption shall include an additional 24-bit PIN code.
There shall be an automatic recognition of interferences in all
frequency ranges. The silent change to an interference-free
frequency range shall be automatic or manual according the
EN 300328 ETSI. The audio channel allocation of the microphone
units shall be processor-controlled and automatic. The high-quality
aluminium housing shall feature a mat black coating with Alexit
soft-touch paint. The integrated wideband loudspeaker shall be
used for decentral sound reinforcement. The integrated limiter shall
be used against overdrive. The microphone unit shall use Revoluto
microphone array technology with 17 microphone capsules to
provide a corridor characteristic which ensures a wide range of good

voice quality. Two red LED strips on the sides of the housing shall
indicate that the microphone unit is in ready-to-talk mode. The
touch buttons shall be backlit in 3 colours and provided with Braille.
The integrated rechargeable NiMH battery shall provide a minimum
operating time of 20 hours. The processor-controlled, intelligent
charging technology shall provide a Quick-Charge function without
memory effect and charge the battery within a maximum of 2.5
hours depending on the charging state. The charging status of the
battery shall be monitored and transmitted to the control unit. The
operating control LED shall indicate the status when the minimum
capacity is too low. The microphone unit shall be provided with two
nickel-plated charging contacts. The headphone output shall be a
mini jack (3.5 mm) socket with adjustable control. The DC connec­tion shall be used for battery recharging or powering via external
power adapter. Dimensions (LxHxD) 300x82x96mm. Weight approx.
1061 g.

Manufacturer: beyerdynamic
Type: Quinta MU 31

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beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. [phone] / 617 - 0 | Fax [phone] / 617 - 204
[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 / Quinta MU31 (01.13)