Beyerdynamic Classis GM 301 User manual

OPTIONAL ACCESSORIES
ZSH 301.18 Miniature mounting kit
for Classis GM 301 gooseneck
microphone for remote
installation of CVE 301.18
power supply or connection
to beltpack transmitters of
the Opus wireless series, cable
length approx. 140 cm . . . . . . . Order # 722.510
COMPONENTS
Classis GM 301 Set consisting of:
supercardioid Classis GM 301
miniature condenser microphone,
black, incl. wind shield and
CVE 301.18 power supply with
cover cap . . . . . . . . . . . . . . . Order # 489.336
Classis GM 301.18 Supercardioid miniature
condenser microphone, black,
with 4-pin female mini
XLR connection, incl.
wind shield . . . . . . . . . . . . . . Order # 489.328
TECHNICAL SPECIFICATIONS
Transducer type . . . . . . . . . . . . . . . . . . . Condenser
(back electret)
Operating principle . . . . . . . . . . . . . . . . . Pressure gradient
Frequency response . . . . . . . . . . . . . . . . 50 - 19,000 Hz
Polar pattern. . . . . . . . . . . . . . . . . . . . . . Supercardioid
Open circuit voltage at 1 kHz . . . . . . . . . 17 mV/Pa
Nominal impedance . . . . . . . . . . . . . . . . < 200 Ω
Load impedance . . . . . . . . . . . . . . . . . . . ≥1 kΩ
S/N ratio rel. to 1 Pa / noise voltage . . . . 69 dB [A] / 6.0 µV [A]
Equivalent SPL . . . . . . . . . . . . . . . . . . . . 25 dB [A]
Sound pressure level . . . . . . . . . . . . . . . . 107 dB [SPL @ 1% THD]
Supply voltage . . . . . . . . . . . . . . . . . . . . 8 - 52 V phantom
power
Power consumption . . . . . . . . . . . . . . . . 2.0 mA
Connection. . . . . . . . . . . . . . . . . . . . . . . 4-pin female mini XLR
Dimensions
Length . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mm
Head diameter . . . . . . . . . . . . . . . . . . . . 11 mm
Weight:
GM 301.18. . . . . . . . . . . . . . . . . . . . . . . 24 g
CVE 301.18 . . . . . . . . . . . . . . . . . . . . . . 72 g
GM 301 (Set) . . . . . . . . . . . . . . . . . . . . . 96 g
APPLICATIONS
The GM 301 has specially been designed for the installation into
tables or desks and is suitable for use in discussions and tele/video
conferences. The 85 mm long gooseneck is provided with a 4-pin
female mini XLR connection to connect the microphone to the
CVE 301.18 power supply which can be installed into tables or
desks and provides a protection against mechanical vibration. If the
microphone is not connected, the connection of the CVE 301.18
can be covered with the included covering cap. The GM 301 can
also be connected directly to a beltpack transmitter of the Opus
wireless systems series and is therefore ideal for lecture rooms,
forum discussions or presentations.
The Classis GM 301 microphone features the innovative Scudio™
technology, making the microphone absolutely insensitive to wire-
less communication devices such as mobile phones.
FEATURES
• RFI-proof due to Scudio™ technology
• Supercardioid polar pattern
• High gain-before-feedback
• Flat, wide range frequency response
• High-quality reproduction of speech
• Flexible gooseneck for optimum positioning
• Unobtrusive design
Classis GM 301
Gooseneck Microphone
beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. [phone] / 617 - 0 | Fax [phone] / 617 - 204
[email protected] | www.beyerdynamic.com
For further distributors worldwide, please go to www.beyerdynamic.com
Non-contractual illustrations. Contents subject to change without notice. E4 / GM 301 (05.11)
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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.
Frequency response curve ± 2.5 dB 0 dB 17 mV/Pa GM 301
=
^
Classis GM 301
beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. [phone] / 617 - 0 | Fax [phone] / 617 - 204
[email protected] | www.beyerdynamic.com
For further distributors worldwide, please go to www.beyerdynamic.com
Non-contractual illustrations. Contents subject to change without notice. E4 / GM 301 (05.11)
2 of 3
WIRING DIAGRAM
br = braun / brown / brun
rt = rot / red / rouge
ws = weiß / white / blanc
Sch = Schirm / shield / écran
Classis GM 301.18 CVE 301.18

Classis GM 301
beyerdynamic GmbH & Co. KG
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. [phone] / 617 - 0 | Fax [phone] / 617 - 204
[email protected] | www.beyerdynamic.com
For further distributors worldwide, please go to www.beyerdynamic.com
Non-contractual illustrations. Contents subject to change without notice. E4 / GM 301 (05.11)
3 of 3
DIMENSIONS
ZSH 301.18
Classis GM 301
max. 37 mm
[1.5 in]
ø20 mm
[0.8 in]
M16 x 1.5
24
visible part
built-in part