BEYERDYNAMIC Classis BM 43 BC 729515, Classis BM 43 B 723800, Classis BM 43 W 723819 Classis BM 43 Spec Sheet A2.pdf

Classis BM 43

Boundary Microphone

FEATURES

• Half-spherical polar pattern

• RFI-proof due Scudio™ technology

• High-quality non-glare design

• Linear frequency response

• Suitable for miking speech

TECHNICAL SPECIFICATIONS

Transducer type . . . . . . . . . . . . . . . . . . . Condenser

(back-electret)

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

Frequency response . . . . . . . . . . . . . . . . 40 - 20,000 Hz

Polar pattern . . . . . . . . . . . . . . . . . . . . . Half-spherical

Open circuit voltage . . . . . . . . . . . . . . . . 21 mV/Pa = -33.5 dBV

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

Nominal output impedance . . . . . . . . . . ≥ 1 kΩ

Max. SPL at 1 kHz. . . . . . . . . . . . . . . . . . 124 dB

Dynamic range . . . . . . . . . . . . . . . . . . . . 95 dB

Signal-to-noise ratio . . . . . . . . . . . . . . . . 65 dB [A, RMS]

Noise voltage . . . . . . . . . . . . . . . . . . . . . 9.1 µV [A, RMS]

A-weighted equivalent SPL . . . . . . . . . . . 29 dB

Voltage supply . . . . . . . . . . . . . . . . . . . . 8 - 52 V phantom power

Current consumption . . . . . . . . . . . . . . . approx. 2.3 mA

Dimensions without connector

(L x W x H) . . . . . . . . . . . . . . . . . . . . . . . 86 x 61 x 21 mm

[3.39" x 2.40" x 0.83"]

Weight with cable . . . . . . . . . . . . . . . . . 213 g [7.51 oz]

VERSIONS

Classis BM 43 B black, integrated pre-amp,

bare-ended 3 m

long cable . . . . . . . . . . . . . Order # 723.800

Classis BM 43 W white, integrated pre-amp,

bare-ended 3 m

long cable . . . . . . . . . . . . . Order # 723.819

Classis BM 43 BC black, integrated pre-amp,

3 m long cable with

3-pin XLR connector. . . . . . Order # 729.515

APPLICATIONS

The Classis BM 43 is a small condenser boundary microphone with a
half-spherical polar pattern for round table discussions, tele­conferences, studio and live recording. The robust housing is of a high­quality design and covered with very exclusive, dust repellent fabric.
The matt, non-glare surface allows integrating the Classis BM 43
discretely into each installation. The integrated high pass filter
reduces low-frequency noise from tables and other.
The increase of the sound pressure at a boundary results in a higher
gain, signal-to-noise ratio and comb filter effects cannot occur.

The Classis BM 43 is available in matt black or white.

ARCHITECT’S AND ENGINEER’S SPECIFICATIONS

The microphone shall be a fixed-charge condenser designed for use
in table or panel-mount boundary applications. It shall have a
frequency response of 40 Hz to 20,000 Hz and an omnidirectional
polar pattern. It shall have a built-in phantom power module and
shall operate from an external 8V to 52V DC phantom power
source. The filter in the microphone grille shall eliminate wind and
pop noise. The RFI shield technology shall eliminate radio frequency
interference of wireless communication devices. It shall be capable
of handling sound input levels up to 124 dB with a dynamic range
of 95 dB. Nominal open circuit output voltage shall be 21 mV/Pa at
1 kHz. Output shall be low impedance balanced (<200 ohms).
The microphone shall have a maximum size of 86 x 61 x 21 mm
(3.39" x 2.40" x 0.83"). Weight shall be 213 grams (7.51 oz). The
microphone shall provide an unobtrusive full metal housing for
discreet positioning. The steel mesh grille shall be covered by a
fabric. Finish shall be non-glare mat black [white]. Rubber pads shall
be mounted for reduction of mechanical noise transfer from the
mounting panel. The microphone shall have a 3 metre cable, with
bare end [3-pin male XLR connector].

Manufacturer: beyerdynamic
Type: Classis BM 43 B [W, BC]

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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. E2 / Classis BM 43 (07.16)

Classis BM 43

FREQUENCY RESPONSE & POLAR PATTERN

This frequency response curve (measuring tolerance ± 3 dB) and polar pattern correspond to a typical production sample for this microphone.

Frequency response curve ± 3 dB 0 dB 21 mV/Pa Classis BM 43

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WIRING DIAGRAM

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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. E2 / Classis BM 43 (07.16)