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Neumann BCM-104 Large Diaphragm Condenser Broadcast Microphone
  • Neumann BCM-104 Large Diaphragm Condenser Broadcast Microphone
  • Neumann BCM-104 Large Diaphragm Condenser Broadcast Microphone
  • Neumann BCM-104 Large Diaphragm Condenser Broadcast Microphone
  • Neumann BCM-104 Large Diaphragm Condenser Broadcast Microphone
  • Neumann BCM-104 Large Diaphragm Condenser Broadcast Microphone
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Neumann BCM-104 Large Diaphragm Condenser Broadcast Microphone

Manufacturer: Neumann

Item #: NEUM-BCM104   •   MFG #: BCM-104


Our Price:$1,079.95

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Availability: Usually ships in 3-10 business days
This item is currently out of stock and will ship the minute we receive it – normally 3-10 business days. Need it sooner? Call 800-522-2025 and we'll make it happen,or email Customer Service for expedited delivery options. Certain Non-Stock Items Valued over $50.00 may Ship FREE UPS GROUND in the Continental US. Multiple quantities of the same non-Stock Item Valued below $50.00 may be ordered to meet the $50 minimum order requirement to qualify for Free UPS Ground Freight. This offer does not apply to certain freight-intensive or hazardous items. Certain restrictions may apply.



    Emotion conveyed with technical perfection. This is the ideal which the Neumann microphones in the Broadcast Line have been designed to fulfill. The fine-tuning to the requirements of professional broadcast studios and the individual, functionally optimized design* ensure that these are microphones of character.

    With its large-diaphragm condenser capsule and cardioid directional characteristic, the BCM 104 is ideal for the faithful reproduction of speech and music. This is due, for instance, to the frequency response that is flat up to 3 kHz and then gradually boosted in the higher frequencies. If required, internal switches can be used to compensate for the proximity effect and to reduce the sensitivity by 14 dB. The versatility of the BCM 104 can be seen in its wide range of applications, from news, to round-table discussions, to radio plays, to musical recordings.

    Mechanical Features
    The microphone headgrille twists off easily for quick cleaning. Neumann offers optional color-coded headgrilles so that, for reasons of hygiene, each announcer can use his or her individual headgrille. In front of the capsule, mounted on a frame holder, a fine gauze serves as a built-in popscreen.

    The microphones of the Broadcast Line have an elastic mount against structure-borne noise, that is compatible with standard broadcast-segment microphone arms.

    Acoustic features
    The microphone headgrille houses the K 04 large-diaphragm capsule, which has a flat frequency response up to 3 kHz. Higher frequencies have an increased presence up to 2 dB.

    Since the above-mentioned microphone characteristics are obtained without the use of resonance effects, the microphone features excellent transient response and transmits all transient phenomena of music and speech without any coloration.

    The integrated Pop Screen
    A pop screen not only prevents the occurrence of plosive pop noises in vocal recordings, but also efficiently prevents unwanted particles, from respiratory moisture, nicotine, to food remnants, from settling on the diaphragm. The pop screen can be removed for cleaning without the use of tools.

    Electrical features
    Instead of a transformer to couple the microphone output to the supply voltage, the BCM 104 has an electronic circuit which, like a transformer, provides for good common mode rejection.

    Interference induced in the balanced modulation line is thus suppressed effectively.

    With a very low self-noise of 7 dB(A), and an overload capability extending to 138 dB SPL, the BCM 104 has a dynamic range of 131 dB (A-weighted).

    Filter and Preattenuation
    The BCM 104 amplifier has a linear operation down to 20 Hz. An active filter efficiently suppresses signals below this frequency. In order to compensate for the proximity effect, an electronic high-pass filter, activated by a switch, is built into the microphone. This filter reduces frequencies below 100 Hz by 12 dB/octave.

    A 14-dB preattenuation switch is provided in order to adjust the sensitivity, if necessary, to circuits designed for dynamic microphones. But this will increase the self noise accordingly.

    Both switches are located inside the microphone housing, since they will normally be operated only once, when the broadcasting facility is set up.

    The preferred mode of operation is to suspend the BCM 104 or BCM 705 from a standard studio boom arm.

    A thread adapter to fit different connector threads is included. In order to provide protection from structure-borne noise, both the capsule and the microphone in its mount are elastically suspended.

    The optional SG 5 swivel mount allows additional angling of the microphone by +/-90 degrees.

    * The design of the microphone is a registered design of the Georg Neumann GmbH in certain countries.

    • Features

      • Large-diaphragm condenser capsule
      • Cardioid directional characteristic
      • Characteristic, functionally optimized design*
      • Integrated pop protection
      • Integrated elastic suspension
      • Individual headgrilles for different users
      • Colored rings to identify the replacement headgrilles
      • Easy removal and cleaning of microphone headgrille (with bayonet mount)
      • Mechanical compatibility with standard studio boom arms
      • Internal switches: high-pass and pre-attenuation
      • * The design of the microphone is a registered design of the Georg Neumann GmbH in certain countries.
    • Specifications

      • Acoustical operating principle Pressure gradient transducer
      • Directional pattern Cardioid
      • Frequency range 20 Hz ... 20 kHz
      • Sensitivity at 1 kHz into 1 kohm 22 mV/Pa
      • Sensitivity at -14 dB attenuation 4.4 mV/Pa
      • Rated impedance 50 ohms
      • Rated load impedance 1 kohms
      • Equivalent noise level, CCIR¹) 18 dB
      • Equivalent noise level, A-weighted¹) 7 dB-A
      • Maximum SPL for THD 0.5%²) 138 dB
      • Maximum SPL for THD 0.5% with preattenuation²) 152 dB
      • Signal-to-noise ratio, CCIR¹) (rel. 94 dB SPL) 76 dB
      • Signal-to-noise ratio, A-weighted¹) (rel. 94 dB SPL) 87 dB
      • Maximum output voltage 10 dBu
      • Supply voltage (P48, IEC 61938) 48 V ± 4 V
      • Current consumption (P48, IEC 61938) 3.2 mA
      • Matching connector XLR3F
      • Weight 500 g
      • Diameter 64 mm
      • Length 85 mm
      • Height (without suspension) 110 mm
      • 1) according to IEC 60268-1; CCIR-weighting acccording to CCIR 468-3, quasi peak; A-weighting according to IEC 61672-1, RMS
      • 2) measured as equivalent el. input signal

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