Beyerdynamic CLASSIS RM 31 User manual

Classis RM 30

Classis RM 31

KONDENSATORMIKROFON

CONDENSER MICROPHONE

MICROPHONE À CONDENSATEUR

Produktinformation

Product Information

Informations de produit

Classis RM 30 | RM 31 – Contents 9

english

1. Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . 10

2. Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3. Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4. Microphone Positioning . . . . . . . . . . . . . . . . . . . . . . 11

5. Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6. Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

7. Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

8. Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . 12

9. Technical Specifications . . . . . . . . . . . . . . . . . . . . . 12

10. Disposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Frequency Response Curve . . . . . . . . . . . . . . . . . . . . . . . 20

Polar Patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Classis RM 30 | RM 31

Thank you for selecting the Classis RM 30 or RM 31 Revoluto

microphone. Please take some time to read carefully through this

information before using the product.

1. Safety Information

• Protect the microphone from moisture and sudden impacts. You

could either injure yourself or others or damage the microphone.

• Do not blow into the microphone, you could damage the

transformer. It is preferable to carry out a speech trial.

2. Applications

The Classis RM 30 | RM 31 is a modern desktop microphone

which is ideal for discussions, podiums, tele/video conferencing,

announcements and lecterns.

The Revoluto technology with integrated microphone capsules provides

a 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.

3. Connection

For example an XLR flange socket is installed into the tabletop and

connec

ted to the amplifier input (pin 1: ground, pin 2: NF+,

pin 3: NF-). As an alternative there are installation and shockmounted

holders available (refer to “Optional Accessories”).

The microphone is connected and ready for operation.

The Classis RM 30 and RM 31 S microphones need a phantom

supply of 8 - 52 V for operation.

Q Version

In order to avoid interference, we recommend that the audio and

the supply to the illuminated ring are individually shielded. The

Classis RM 31 Q microphone requires a voltage of 5 V for operation.

Classis RM 30 | RM 31 11

english

4. Microphone Positioning

When notebooks are being used, it is

also necessary to consider the micro-

phones. Notebooks should always be

positioned to the side of the micro-

phones. Otherwise, when opened, the

LCD screen would obstruct the

sound. This also applies to free-

standing monitors. Sufﬁcient

distance is the key to the directional

effect and good feedback suppression.

Moreover, notebooks often have fans

at the back. The noise of the fan

would then be picked up by the

microphone.

Two Classis RM 31 Q should not be

directly placed back to back, because

the loudspeaker of the second built-

in or desktop microphone unit will be

picked up by the microphone and

cause feedback. The minimum

distance should be 15 to 20 cm.

In order to avoid feedback, the mini-

mum distance between external loud-

speakers and the Classis RM 30 or

Classis RM 31 should be 5 m.

For more information about application examples, please refer to the

beyerdynamic “Revoluto Design Guide”.

5. Maintenance

Use a soft, damp cloth for cleaning the microphone. If necessary,

you can use a gentle cleansing agent (such as washing-up liquid).

Make sure not to allow any water to enter the transducer

element and never use any solvent cleansers.

6. Service

Servicing must be carried out by qualified service personnel only.

Dismantling the microphone yourself will invalidate the guarantee.

15 cm

15 - 20 cm

5 m

Classis RM 30 | RM 31

7. Versions

Classis RM 30 3-pin male XLR connector,

ﬁlter . . . . . . . . . . . . . . . . . . Order # 729.388

Classis RM 31 S 3-pin male XLR connector,

ﬁlter, LED ring, programmable

switch . . . . . . . . . . . . . . . . . Order # 729.396

Classis RM 31 Q 5-pin male XLR connector,

LED ring . . . . . . . . . . . . . . . Order # 729.302

8. Optional Accessories

GMB 33 S Microphone base with button,

3-pin female XLR connector 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 52 Shock-mounted holder for

table installations, for

Classis RM 31 Q, 5-pin female

XLR connector, black . . . . . . Order # 725.757

ZSH 20 Shock-mounted holder for

table installations, black. . . . Order # 454.559

9. Technical Specifications

Microphone . . . . . . . . . . . . . Revoluto microphone array, patented

Transducer type . . . . . . . . . Electret condenser

Operating principle . . . . . . . Pressure gradient

Polar pattern . . . . . . . . . . . . Corridor

Horizontal . . . . . . . . . . . . Cardioid

Vertical . . . . . . . . . . . . . . . Lobe

Optimal distance to

the speaker . . . . . . . . . . . . . 40 - 80 cm [15.75" - 31.5"]

Frequency response

Classis RM 31 Q . . . . . . . . 110 - 20,000 Hz

Classis RM 30 . . . . . . . . . . 90 - 20.000 Hz

Sensitivity . . . . . . . . . . . . . . 28.7 mV/Pa = -30.9 dBV ±2 dB

Nominal impedance

Classis RM 31 Q . . . . . . . . < 20 Ω

Classis RM 30 . . . . . . . . . . < 200 Ω

Load impedance

Classis RM 31 Q . . . . . . . . ≥ 100 Ω

Classis RM 30 . . . . . . . . . . ≥ 1 kΩ

Signal-to-noise ratio /noise voltage

Classis RM 31 Q . . . . . . . . 68 dB [A] / 11.5 μV [A]

Classis RM 30 . . . . . . . . . . 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 . . . . . . . . unbalanced, 5-pin XLR male

Classis RM 30 . . . . . . . . . . unbalanced, 3-pin XLR male

Supply voltage / supply current

Classis RM 31 Q . . . . . . . . 5 V / 8.5 mA (with LED)

Classis RM 30. . . . . . . . . . . Phantom power

P48 (+48 VDC, 6.8 kΩ, < 4.5 mA)

P24 (+24 VDC, 1.2 kΩ, < 4.5 mA)

P12 (+12 VDC, 680 Ω, < 4.5 mA)

Temperature range . . . . . . . . -10 °C bis +40 °C [14 °F to 104 °F]

Dimensions: . . . . . . . . . . . . RM 30 RM 31 Q

Length (in mm) . . . . . . . . 261 219

[in inch]. . . . . . . . 10.28" 8.62"

Capsule ø (in mm) . . . . . . . . 25 25

[in inch]. . . . . . . . 0.98" 0.98"

Weight (in g) . . . . . . . . . . 153 107

[in pounds]. . . . . . 0.235 0.377

10. Disposal

This symbol on the product, in the instructions or on the

packaging means that your electrical and electronic equip-

ment should be disposed at the end of its life separately

from your household waste. There are separate collection

systems for recycling in the EU. For more information,

please contact the local authority or your retailer where

you purchased the product.

Classis RM 30 | RM 31 13

english

RM 30 | RM 31 – Revoluto Mikrofon

Frequenzkurve / Frequency Response Curve /

Courbe de fréquence

± 2 dB (1 m) Classis RM 30 0 dB = 28.7 mV/Pa0 dB = 11 mV/Pa

RM 30 | RM 31 – Revoluto Mikrofon 21

± 2 dB (1 m) Classis RM 31 Q 0 dB = 28.7 mV/Pa0 dB = 11 mV/Pa

Classis RM 30 | RM 31

Richtdiagramme / Polar Patterns /

Diagrammes de directivité

horizontal

vertical

Classis RM 30 | RM 31 23

Anschlussdiagramme / Wiring Diagrams /

Diagrammes de câblage

Classis RM 31 Q

Classis RM 30 | RM 31 S

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