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A

RCHITECT

S

S

PECIFICATIONS

The cardioid electret condenser boundary microphone shall be a
high-quality installation microphone for tabletops or ceilings. The
microphone shall be provided with an integrated amplifier and
power supply. The SCUDIO

®

technology shall eliminate inter-

ferences of other wireless communication devices. The microphone
shall be powered by phantom power between 8 V and 52 V. The 
filter in the microphone grille shall eliminate wind and pop noise.
The fully metal housing shall provide a M20 x 1.5 thread with 
fastening nut and black metal microphone grille. The delivery shall
include elastic bearing rings to compensate mechanical noise and
vibration. The frequency response shall be 50 Hz - 18 kHz. The open
circuit voltage shall be 19 mV/Pa. The nominal impedance shall be
200 ohms. The lower part of the housing shall provide a 3-pin male
XLR connector. The total length shall be 76 mm [3"], the shaft
length shall be 67 mm [2.6"], the shaft diameter shall be 20 mm
[0.8"] (M20 x 1.5 thread with fastening nut), the head diameter
shall be 30 mm [1.2"], the length of the head shall be 9 mm [0.4"].
The net weight shall be 0.085 kg [0.2 lbs].

Manufacturer:

beyerdynamic

Type:

Classis BM 32 B

The cardioid electret condenser boundary microphone shall be a
high-quality installation microphone for tabletops or ceilings. The
microphone shall be provided with an integrated amplifier and
power supply. The SCUDIO

®

technology shall eliminate inter-

ferences of other wireless communication devices. The microphone
shall be powered by phantom power between 8 V and 52 V. The 
filter in the microphone grille shall eliminate wind and pop noise.
The fully metal housing shall provide a M20 x 1.5 thread with 
fastening nut and a microphone grille with silver metal-look made
of double-layer, fine-meshed acuraLINE

®

wire mesh. The delivery

shall include elastic bearing rings to compensate mechanical noise
and vibration. The frequency response shall be 50 Hz - 18 kHz. The
open circuit voltage shall be 19 mV/Pa. The nominal impedance
shall be 200 ohms. The lower part of the housing shall provide a 
3-pin male XLR connector. The total length shall be 76 mm [3"],
the shaft length shall be 67 mm [2.6"], the shaft diameter shall be
20 mm [0.8"] (M20 x 1.5 thread with fastening nut), the head 
diameter shall be 30 mm [1.2"], the length of the head shall be 
9 mm [0.4"]. The net weight shall be 0.085 kg [0.2 lbs].

Manufacturer:

beyerdynamic

Type:

Classis BM 32 SE

The cardioid electret condenser boundary microphone shall be a
high-quality installation microphone for tabletops or ceilings. The
microphone shall be provided with an integrated amplifier and
power supply. The SCUDIO

®

technology shall eliminate inter-

ferences of other wireless communication devices. The microphone
shall be powered by phantom power between 8 V and 52 V. The 
filter in the microphone grille shall eliminate wind and pop noise.
The fully metal housing shall provide a M20 x 1.5 thread with 
fastening nut and white metal microphone grille. The delivery shall
include elastic bearing rings to compensate mechanical noise and
vibration. The frequency response shall be 50 Hz - 18 kHz. The open 

circuit voltage shall be 19 mV/Pa. The nominal impedance shall be
200 ohms. The lower part of the housing shall provide a 3-pin male
XLR connector. The total length shall be 76 mm [3"], the shaft
length shall be 67 mm [2.6"], the shaft diameter shall be 20 mm
[0.8"] (M20 x 1.5 thread with fastening nut), the head diameter
shall be 30 mm [1.2"], the length of the head shall be 9 mm [0.4"].
The net weight shall be 0.085 kg [0.2 lbs].

Manufacturer:

beyerdynamic

Type:

Classis BM 32 W

The omnidirectional electret condenser boundary microphone shall
be a high-quality installation microphone for tabletops or ceilings.
The microphone shall be provided with an integrated amplifier and
power supply. The SCUDIO

®

technology shall eliminate inter-

ferences of other wireless communication devices. The microphone
shall be powered by phantom power between 8 V and 52 V. The 
filter in the microphone grille shall eliminate wind and pop noise.
The fully metal housing shall provide a M20 x 1.5 thread with 
fastening nut and black metal microphone grille. The delivery shall
include elastic bearing rings to compensate mechanical noise and
vibration. The frequency response shall be 50 Hz - 18 kHz. The open
circuit voltage shall be 15 mV/Pa. The nominal impedance shall be
200 ohms. The lower part of the housing shall provide a 3-pin male
XLR connector. The total length shall be 76 mm [3"], the shaft
length shall be 67 mm [2.6"], the shaft diameter shall be 20 mm
[0.8"] (M20 x 1.5 thread with fastening nut), the head diameter
shall be  30 mm [1.2"], the length of the head shall be 9 mm [0.4"].
The net weight shall be 0.085 kg [0.2 lbs].

Manufacturer:

beyerdynamic

Type:

Classis BM 33 B

The omnidirectional electret condenser boundary microphone shall
be a high-quality installation microphone for tabletops or ceilings.
The microphone shall be provided with an integrated amplifier and
power supply. The SCUDIO

®

technology shall eliminate inter-

ferences of other wireless communication devices. The microphone
shall be powered by phantom power between 8 V and 52 V. The 
filter in the microphone grille shall eliminate wind and pop noise.
The fully metal housing shall provide a M20 x 1.5 thread with 
fastening nut and a microphone grille with silver metal-look made
of double-layer, fine-meshed acuraLINE

®

wire mesh. The delivery

shall include elastic bearing rings to compensate mechanical noise
and vibration. The frequency response shall be 50 Hz - 18 kHz. The
open circuit voltage shall be 15 mV/Pa. The nominal impedance
shall be 200 ohms. The lower part of the housing shall provide a 
3-pin male XLR connector. The total length shall be 76 mm [3"],
the shaft length shall be 67 mm [2.6"], the shaft diameter shall be
20 mm [0.8"] (M20 x 1.5 thread with fastening nut), the head 
diameter shall be 30 mm [1.2"], the length of the head shall be 
9 mm [0.4"]. The net weight shall be 0.085 kg [0.2 lbs].

Manufacturer:

beyerdynamic

Type:

Classis BM 33 SE

Classis BM 32 / 33 / 34

beyerdynamic GmbH & Co. KG 
Theresienstr. 8 | 74072 Heilbronn – Germany
Tel. +49 (0) 71 31 / 617 - 0 | Fax +49 (0) 71 31 / 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. E5 / BM 32/33/34 (08.12)

5 of 6

Summary of Contents for Classis BM 32

Page 1: ...evices such as mobile phones The Classis BM 32 has a half cardioid polar pattern which increases the gain before feedback and decreases the amount of diffuse ambience The Classis BM 34 corresponds to the Classis BM 32 but is provided with a bass roll off filter The Classis BM 33 has a half spherical polar pattern making it ideal for large rooms The high sensitivity guarantees a constant output lev...

Page 2: ...herical Half cardioid Open circuit voltage at 1 kHz 0 dB 1 V Pa 19 mV Pa 34 4 dBV 15 mV Pa 36 5 dBV 19 mV Pa 35 dBV Nominal impedance 200 Ω 200 Ω 200 Ω Load impedance 1 kΩ 1 kΩ 1 kΩ S N ratio rel to 1 Pa 69 dB A 68 dB A 60 dB Noise voltage 6 0 µV A 6 0 µV A Max sound pressure level 107 dB SPL 1 THD 107 dB SPL 1 THD Equivalent SPL 25 dB A 26 dB A 26 dB Phantom supply 8 52 V 8 52 V 8 52 V Current co...

Page 3: ...o www beyerdynamic com Non contractual illustrations Contents subject to change without notice E5 BM 32 33 34 08 12 3 of 6 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 2 5 dB 0 dB 19 mV Pa Classis BM 32 Frequency response 2 5 dB 0 dB 19 mV Pa Classis BM 34...

Page 4: ...butors worldwide please go to www beyerdynamic com Non contractual illustrations Contents subject to change without notice E5 BM 32 33 34 08 12 4 of 6 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 2 5 dB 0 dB 15 mV Pa Classis BM 33 Classis BM 33 ...

Page 5: ...ation The frequency response shall be 50 Hz 18 kHz The open circuit voltage shall be 19 mV Pa The nominal impedance shall be 200 ohms The lower part of the housing shall provide a 3 pin male XLR connector The total length shall be 76 mm 3 the shaft length shall be 67 mm 2 6 the shaft diameter shall be 20 mm 0 8 M20 x 1 5 thread with fastening nut the head diameter shall be 30 mm 1 2 the length of ...

Page 6: ...ne for tabletops or ceilings The microphone shall be provided with an integrated amplifier and power supply with bass roll off filter The SCUDIO technology shall eliminate inter ferences of other wireless communication devices The microphone shall be powered by phantom power between 8 V and 52 V The filter in the microphone grille shall eliminate wind and pop noise The fully metal housing shall pr...

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