Beyerdynamic OM304-US Specifications

FEATURES

• RFI-proof due to Scudio™ technology

• High sensitivity

• High gain before feedback

• Unobtrusive due to small dimensions

• Non-glare surface

• Phantom power 8 - 52 volts

APPLICATIONS

The gooseneck microphones of the Classis series are provided with
a very small cardioid gooseneck microphone for all kinds of
applications where a high-quality, but also discrete microphone is
demanded.
Due to the cardioid polar pattern this microphone has a high gain
before feedback and provides highest intelligibility of speech.
Therefore, the microphones are ideal for the use with lecterns, sound
reinforcement applications, conferencing, high quality talkback and
paging systems.
All microphones feature the innovative Scudio™ technology,
making the microphones absolutely insensitive to wireless
communication devices such as mobile phones.
The microphone is mounted on a 6 mm thick gooseneck and due to
its mat black, non-glare surface almost invisible.
The microphones can be powered with any phantom power source
supplying 8 to 52 volts.

Classis GM 302 - 305

Gooseneck Microphones

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. E3 / GM 302 - 305 (01.11)

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OPTIONAL ACCESSORIES

ZSH 23 FT Base plate with 3-pin

XLR-socket and cable . . . . . . . Order # 464.902

ZSH 20 Shock-mounted holder for

desktop installation . . . . . . . . . Order # 454.559

SUPPLIED ACCESSORY

WS 302 B Wind shield for

Classis GM 302 - 305, black . . . Order # 722.782

VERSIONS

Classis GM 302 XLR connector, 200 mm [8"]. . Order # 489.557
Classis GM 303 XLR connector, 300 mm [12"]. . Order # 722.383
Classis GM 304 XLR connector, 400 mm [16"]. . Order # 722.391
Classis GM 305 XLR connector, 500 mm [20"]. . Order # 722.405
Classis GM 305 T 5/8" internal thread / adapter to 3/8"

and M18x0.75 external thread,
length 500 mm [20"], connecting
cable 2.5 m [8.2 ft] with 4-pin female
mini XLR connector, incl. CVE 305.18
pre-amp, ZSH 305 small base plate,
ZSA 305 mounting adapter,

wind shield . . . . . . . . . . . . . . . Order # 722.421

GM 303

GM 302

Classis GM 302 - 305

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. E3 / GM 302 - 305 (01.11)

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TECHNICAL SPECIFICATIONS

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

Operating principle . . . . . . . . . . . . . . . Pressure gradient

Polar pattern. . . . . . . . . . . . . . . . . . . . Cardioid

Frequency response . . . . . . . . . . . . . . 50 - 19,000 Hz

Open circuit voltage . . . . . . . . . . . . . . 17 mV/Pa

Nominal impedance . . . . . . . . . . . . . . < 200 Ω

Load impedance . . . . . . . . . . . . . . . . . ≥ 1 kΩ

Signal to noise ratio / noise voltage. . . 69 dB [A] / 6.0 µV [A]

Max. SPL. . . . . . . . . . . . . . . . . . . . . . . 107 dB [SPL @ 1% THD]

Equivalent SPL. . . . . . . . . . . . . . . . . . . 25 dB [A]

Wiring . . . . . . . . . . . . . . . . . . . . . . . . balanced with 3-pin

XLR-plug

Supply voltage . . . . . . . . . . . . . . . . . . Phantom power 8 - 52 V

Current consumption . . . . . . . . . . . . . 2.0 mA

Dimensions

Length . . . . . . . . . . . . . . . . . . . . . . . . depending on the version

Head diameter . . . . . . . . . . . . . . . . . . 13.6 mm [0.5"]

Gooseneck diameter . . . . . . . . . . . . . . 6 mm [0.2"]

Shaft diameter . . . . . . . . . . . . . . . . . . 20 mm [0.8"]

Weight . . . . . . . . . . . . . . . . . . . . . . . . depending on the version

FREQUENCY RESPONSE & POLAR PATTERN

This frequency response curve (measuring tolerance ± 2.5 dB) and polar pattern correspond to a typical production sample for this microphone.

WIRING DIAGRAMS

Frequency response curve ± 2.5 dB 0 dB = 17 mV/Pa Classis GM 302 - 305

^

rt = rot / red / rouge
ws = weiß / white / blanc
Sch = Schirm / shield / écran

Classis GM 305 T

Classis GM 302 - 305

CVE 305.18

br = braun / brown / brun
rt = rot / red / rouge
ws = weiß / white / blanc
Sch = Schirm / shield / écran