Classis RM 30 | RM 31
Revoluto Microphone
APPLICATIONS
The Classis RM 30 or Classis RM 31 is a new desktop microphone
for round table discussions, podiums, tele/video conferencing,
announcements and lecterns.
The Revoluto technology with five integrated microphone capsules
provides a so-called corridor characteristic which ensures a wide
range of good voice quality. Within this range up to two speakers
can move freely, i.e. they can stand up or sit down, move their head
and move towards or away from the microphone.
The microphone features the innovative Scudio technology, making
it absolutely insensitive to wireless communication devices such as
mobile phones.
The microphone is available in four versions. The Classis RM 30 and
Classis RM 31 SP or RC versions can be installed into tabletops
when using shock-mounted holders.
The Classis RM 31 Q version is used with the microphone units of
the Quinta and Orbis conference systems.
With the SP variants you can select via the programmable button
between the operating modes ON/OFF, Push-To-Talk and Push-ToMute. The microphone button can also be disabled. The frequency
response can be set with a separate switch in two stages: Linear or
with low-cut filter to suppress low-frequency interference. The
illuminated ring indicating the microphone status can be
deactivated.
In addition to the features of the SP variants, the RC variant provides
the option of external control. Furthermore, when operating the
microphone button, an external device can be controlled via the
control output.
The LED ring of the Classis RM 31 variants displays the ready-totalk status of the microphone.
FEATURES
• Horizontal corridor characteristic for picking up
two speakers
• Large speaking distance
• Large freedom of movement
• Revoluto technology with vertical microphone array
• RFI-proof due to Scudio technology
• High gain before feedback
• Modern metal housing
beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. +49 (0) 71 31 / 617 - 0 | Fax +49 (0) 71 31 / 617 - 204
info@beyerdynamic.de | www.beyerdynamic.com
For further distributors worldwide, please go to www.beyerdynamic.com
Non-contractual illustrations. Contents subject to change without notice. E5/Classis RM 30|RM 31 (08.16)
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Classis RM 31 Q
Classis RM 30 Classis RM 31 SP / RC
Classis RM 31 Q with
Orbis MU 21 delegate
microphone unit
VERSIONS
Classis RM 30 3-pin male XLR connector,
filter, black . . . . . . . . . . . . . . Order # 729.388
Classis RM 31 SP 3-pin male XLR connector,
phantom power adapter,
programmable button
(PTT, PTM, ON/OFF) with
braille, switchable low-cut filter,
switchable LED ring . . . . . . . Order # 729.396
Classis RM 31 RC 5-pin male XLR connector,
phantom power adapter,
programmable button
(PTT, PTM, ON/OFF) with
braille, switchable low-cut filter,
switchable LED ring
remote control function . . . . Order #. 729.825
Classis RM 31 Q 5-pin male XLR connector,
LED ring . . . . . . . . . . . . . . . . Order # 729.302
winner
Classis RM 30 | RM 31
beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. +49 (0) 71 31 / 617 - 0 | Fax +49 (0) 71 31 / 617 - 204
info@beyerdynamic.de | www.beyerdynamic.com
For further distributors worldwide, please go to www.beyerdynamic.com
Non-contractual illustrations. Contents subject to change without notice. E5/Classis RM 30|RM 31 (08.16)
2 of 6
TECHNICAL SPECIFICATIONS
Microphone . . . . . . . . . . . . . . . . . Revoluto microphone array,
patented
Transducer type . . . . . . . . . . . . . . Electret condenser
Operating principle. . . . . . . . . . . . Pressure gradient
Polar pattern . . . . . . . . . . . . . . . . Corridor
Horizontal . . . . . . . . . . . . . . . . Cardioid
Vertical. . . . . . . . . . . . . . . . . . . Lobar
Optimal distance
to the speaker . . . . . . . . . . . . . . . 40 - 80 cm [15.75" - 31.5"]
Frequency response
Classis RM 31 Q/SP/RC . . . . . . . 110 - 20.000 Hz
Classis RM 30 . . . . . . . . . . . . . . 90 - 20.000 Hz
Sensitivity
Classis RM 31 Q . . . . . . . . . . . . 28.7 mV/Pa = -30.9dBV ±2dB
Classis RM 30/31SP/31RC . . . . . 28.5 mV/Pa = -30.9dBV ±2dB
Nominal impedance
Classis RM 31 Q . . . . . . . . . . < 20 Ω
Classis RM 30/31SP/31RC. . . < 200 Ω
Load impedance
Classis RM 31 Q . . . . . . . . . . ≥ 100 Ω
Classis RM 30/31SP/31RC. . . ≥ 1 kΩ
Signal-to-noise ratio /
noise voltage
Classis RM 31 Q . . . . . . . . . . 68 dB [A] / 11.5 µV [A]
Classis RM 30/31SP/31RC. . . 67.2 dB [A] / 12.5 µV [A]
Max. SPL . . . . . . . . . . . . . . . . . . . 107 dB [SPL @ 1% THD]
Equivalent SPL . . . . . . . . . . . . . . . 26.8 dB [A]
Connector
Classis RM 31 Q . . . . . . . . . . unbal. with 5-pin male XLR
connector
Classis RM 30/31SP . . . . . . . bal. with 3-pin male XLR
connector
Classis RM 31RC . . . . . . . . . bal. with 5-pin male XLR
connector
Supply voltage / supply current
Classis RM 31 Q . . . . . . . . . . 5 V / 8.5 mA (with LED)
Classis RM 30. . . . . . . . . . . . Phantom power
P48 (+48 VDC ±4 VDC, 6.8 kΩ ±20%, < 4.5 mA)
P24 (+24 VDC ±4 VDC, 1.2 kΩ ±20%, < 4.5 mA)
P12 (+12 VDC ±1 VDC, 680 Ω ±20%, < 4.5 mA)
Classis RM 31SP/31RC . . . . . Phantom power
P48 (+48 VDC ±4 VDC, 6.8 kΩ ±20%, < 9.5 mA)
P24 (+24 VDC ±4 VDC, 1.2 kΩ ±20%, < 9.5 mA)
P12 (+12 VDC ±1 VDC, 680 Ω ±20%, < 9.5 mA)
Temperature range . . . . . . . . . . . . . -10 °C bis +40 °C [14 °F to 104 °F]
OPTIONAL ACCESSORIES
GMB 33 S Microphone base with button,
3-pin XLR connection,
for Classis RM 30 and
RM 31 S only. . . . . . . . . . . . . . . . . Order # 725.242
GMS 32 Shock-mounted holder for
table installations, for Classis RM 30
and RM 31 S, 3-pin female
XLR connector, black . . . . . . . . . . . Order # 729.582
GMS 32 W same as above, but white . . . . . . . Order # 729.760
GMS 52 Shock-mounted holder for
table installations, for Classis RM 31 Q,
5-pin female XLR connector,
black . . . . . . . . . . . . . . . . . . . . . . . Order # 729.434
GMS 52 W ame as above, but white . . . . . . . . Order # 729.779
ZSH 20 Shock-mounted holder for
desktop installation . . . . . . . . . . . . Order # 454.559
Dimensions RM 30 RM 31 SP RM 31 RC RM 31 Q
Length (mm)
[inch]
260
[10.24"]
300
[11.81"]
300
[11.81"]
219
[8.62"]
Capsuleø (mm)
[inch]
25
[0.98"]25[0.98"]25[0.98"]25[0.98"]
Weight (g)
[pounds]
153
[0.34 lbs]
186
[0.41 lbs]
186
[0.41 lbs]
107
[0.23 lbs]
Classis RM 30 | RM 31
beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. +49 (0) 71 31 / 617 - 0 | Fax +49 (0) 71 31 / 617 - 204
info@beyerdynamic.de | www.beyerdynamic.com
For further distributors worldwide, please go to www.beyerdynamic.com
Non-contractual illustrations. Contents subject to change without notice. E5/Classis RM 30|RM 31 (08.16)
3 of 6
ARCHITECT’S & ENGINEER’S SPECIFICATIONS
The array microphone with a corridor characteristic shall be used for
high-quality conference, paging and PA applications. The microphone shall be connected to the Quinta or Orbis microphone unit.
The LED ring integrated in the microphone shall indicate the readyto-speak status. The vertical lobar and a horizontal cardioid microphone characteristic shall provide a maximum freedom of
movement without acoustic losses of the recording quality. The filter
in the microphone grille shall eliminate wind and pop noise. The
RFI shield technology shall eliminate interferences of other wireless
communication devices. The electret condenser microphone shall
provide an unobtrusive and modern full metal housing for discreet
positioning. The housing shall be coated with a non-glare mat black
textile and paint. The microphone diameter shall be 25 mm [0.98"].
The total length shall be 230 mm [9.05"] when connected to the
microphone unit (measured from the table’s edge). It shall be
suitable for discussions, podiums, tele and video conferences,
announcements and lecterns. The frequency response shall be
110 - 20,000 Hz. The open circuit voltage shall be 28.7 mV/Pa. The
nominal impedance shall be <20 ohms. The microphone shall be
provided with a 5-pin male XLR connector. The net weight shall be
0.107 kg [0.23 lbs].
Manufacturer: beyerdynamic
Type: Classis RM 31 Q
The array microphone with a corridor characteristic shall be used for
high-quality conference, paging and PA applications. The vertical
lobar and a horizontal cardioid microphone characteristic shall
provide a maximum freedom of movement without acoustic losses
of the recording quality. The filter in the microphone grille shall
eliminate wind and pop noise. The RFI shield technology shall
eliminate interferences of other wireless communi-cation devices.
The electret condenser microphone shall provide an unobtrusive
and modern full metal housing for discreet positioning. The housing
shall be coated with a non-glare mat black textile and paint. The
gooseneck diameter shall be 25 mm [0.98"]. The total length shall
be 261 mm [10.28"]. The phantom power shall be between 8 and
52 V (P12, P24, P48). A pre-amplifier shall be integrated in the base
and provided with a balanced signal output. It shall be suitable for
discussions, podiums, tele and video conferences, announcements
and lecterns. The frequency response shall be 90 - 20,000 Hz. The
open circuit voltage shall be 28.7 mV/Pa. The nominal impedance
shall be 200 ohms. The microphone shall be provided with a 3-pin
male XLR connector. The net weight shall be 0.153 kg [0.34 lbs].
Manufacturer: beyerdynamic
Type: Classis RM 30
The array microphone with a corridor characteristic shall be used for
high-quality conference, paging and PA applications. The vertical
lobar and a horizontal cardioid microphone characteristic shall
provide a maximum freedom of movement without acoustic losses
of the recording quality. The filter in the microphone grille shall
eliminate wind and pop noise. A programmable button shall
operate in the operating modes ON/OFF, Push-To-Talk and Push-ToMute. The microphone button shall be disabled when needed. The
frequency response shall be selectable in two stages: linear or with
low-cut filter to suppress low-frequency noise. The LED ring to
display the microphone status shall be deactivated when needed.
The microphone shall have an excellent RFI shielding and is immune
to wireless communication devices. The electret condenser microphone shall have a discreet and modern metal housing, which shall
be coated with a non-glare mat black textile and paint. The microphone diameter shall be 25 mm [0.98"]. The total length shall be
300 mm [11.81"]. The conference microphone shall operate with
a phantom power of 8 - 52 V (P12, P24 P48). A preamp with
electronically balanced signal output shall be integrated in the base.
It shall be used for round table discussions, panel discussions,
tele/video conferences, paging and lecterns. The frequency
response shall be 110 - 20.000 Hz. The open circuit voltage shall be
28.7 mV/Pa. The nominal impedance shall be 200 ohms. The
microphone shall be provided with a 3-pin XLR connector (male).
The net weight shall be 0.186 kg [0.41 lbs].
Manufacturer: beyerdynamic
Type: Classis RM 31 SP
The array microphone with a corridor characteristic shall be used for
high-quality conference, paging and PA applications. The vertical
lobar and a horizontal cardioid microphone characteristic shall
provide a maximum freedom of movement without acoustic losses
of the recording quality. The filter in the microphone grille shall
eliminate wind and pop noise. A programmable button shall
operate in the operating modes ON/OFF, Push-To-Talk and Push-ToMute. The microphone button shall be disabled when needed. The
frequency response shall be selectable in two stages: linear or with
low-cut filter to suppress low-frequency noise. The LED ring to
display the microphone status shall be deactivated when needed.
The microphone shall be externally turned on or off. Another
control output shall control an external device when operating the
button. The LED ring of the Classis RM 31 variants shall indicate by
a red illumination the ready-to-speak status. The microphone shall
have an excellent RFI shielding and is immune to wireless
communication devices. The electret condenser microphone shall
have a discreet and modern metal housing, which shall be coated
with a non-glare mat black textile and paint. The microphone
diameter shall be 25 mm [0.98"]. The total length shall be 300 mm
[11.81"]. The conference microphone shall operate with a phantom
power of 8 - 52 V (P12, P24 P48). A preamp with electronically
balanced signal output shall be integrated in the base. It shall be
used for round table discussions, panel discussions, tele/video
conferences, paging and lecterns. The frequency response shall be
110 - 20.000 Hz. The open circuit voltage shall be 28.7 mV/Pa. The
nominal impedance shall be 200 ohms. The microphone shall be
provided with a 3-pin XLR connector (male). The net weight shall be
0.186 kg [0.41 lbs].
Manufacturer: beyerdynamic
Type: Classis RM 31 RC
Classis RM 30 | RM 31
beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. +49 (0) 71 31 / 617 - 0 | Fax +49 (0) 71 31 / 617 - 204
info@beyerdynamic.de | www.beyerdynamic.com
For further distributors worldwide, please go to www.beyerdynamic.com
Non-contractual illustrations. Contents subject to change without notice. E5/Classis RM 30|RM 31 (08.16)
4 of 6
FREQUENCY RESPONSE & POLAR PATTERN
This polar pattern and frequency response curve (measuring tolerance ± 2 dB) correspond to a typical production sample for this microphone.
Frequency response ± 2 dB (1 m) Classis RM 30 / RM 31 SP / RM 31 RC 0 dB = 28.7 mV/Pa
horizontal vertical
Frequency response ± 2 dB (1 m) Classis RM 31 Q 0 dB = 28.7 mV/Pa0 dB = 11 mV/Pa
Classis RM 30 | RM 31
beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. +49 (0) 71 31 / 617 - 0 | Fax +49 (0) 71 31 / 617 - 204
info@beyerdynamic.de | www.beyerdynamic.com
For further distributors worldwide, please go to www.beyerdynamic.com
Non-contractual illustrations. Contents subject to change without notice. E5/Classis RM 30|RM 31 (08.16)
5 of 6
Classis RM 31 Q
WIRING DIAGRAMS
Classis RM 30
R
Classis RM 31 RC
Classis RM 31 SP
DIMENSIONS
LED ring
Lateral view Front view Rear view
Classis RM 30
Classis RM 30 | RM 31
beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. +49 (0) 71 31 / 617 - 0 | Fax +49 (0) 71 31 / 617 - 204
info@beyerdynamic.de | www.beyerdynamic.com
For further distributors worldwide, please go to www.beyerdynamic.com
Non-contractual illustrations. Contents subject to change without notice. E5/Classis RM 30|RM 31 (08.16)
DIMENSIONS
LED ring
Lateral view Front view Rear view
Classis RM 31 SP / RC
LED ring
Lateral view Front view
Rear view
Classis RM 31 Q
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