Dynamic Microphone

Neumann BCM 705, dynamic microphone for "American-style" radio voices. Convey emotion, warmth, with exceptional speech intelligibility.

ARTICLE N° 9285
  • Neumann BCM 705
  • Acoustic principle of operation: Pressure gradient transducer
  • Directivity: Hypercardioid
  • Frequency range: 20 Hz - 20 kHz
  • Sensitivity at 1 kHz under 1 kΩ: 1.7 mV/Pa = –55.4 dB ± 1 dB
  • Nominal impedance: 200 ohm
  • Nominal load impedance: 10 kOhm
  • Equivalent noise level, CCIR: 32 dB
  • Equivalent noise level, A-weighted: 18 dB-A
  • Signal-to-noise ratio, CCIR (at 94 dB SPL): 62 dB
  • Signal-to-noise ratio, A-weighted (at 94 dB SPL): 76 dB
  • Compatible connector: XLR 3p
  • Weight: 500 g
  • Diameter: 64 mm
  • Length: 85 mm
  • Height: 110 mm (without suspension)
  • Manufacturer reference: 008507
  • Box contents: BCM 705 microphone, cylindrical cardboard box, quick start guide and safety guide
  • Also available in mt (black) color version
The first Neumann microphone with a dynamic capsule. Design and functions optimized for broadcast applications: integrated anti-plosive protection, suppression of noise transmitted to the microphone, hypercardioid polar pattern
Capsule type
 Dynamic
Application
 Speaking voice, Video / broadcast, Content creation
Directivity
 Hypercardioid
Switch On/Off
 No
Popfilter
 Inside
Power supply
 No power supply required
Vintage look
 Yes
Microphone clip
 Yes
Color
 Nickel
Connectors
 XLR male 3 pins
Frequency response
 20 Hz - 20 kHz
Frequency response, upper limit
 20 kHz
Frequency response, low limit
 20 Hz
Packaging
 Single unit
Emotion conveyed by technical perfection. Neumann microphones in the Broadcast range have been designed to achieve this ideal. They have been optimized for the needs of professional broadcast studios, and their optimized functional design ensures that they are microphones with character.

The BCM 705 is the first dynamic microphone from Neumann. Its body and grille are identical to those of the BCM 104 static model; only the green color of the logo indicates that it is a new product for Neumann. The dynamic capsule has been designed according to a principle of reduction to the essentials; it has a hypercardioid polar pattern, and is specifically designed for recording vocals in close proximity. Multiple levels of isolation from structure-borne noise ensure perfect insensitivity to interference, even in a live studio environment.
Mechanical characteristics
The microphone grille can be easily unscrewed for quick cleaning. Neumann offers optional color-coded grilles that allow each presenter to use their own grille for hygienic reasons. In front of the capsule, mounted on a support frame, a very fine gauze serves as an integrated pop shield.

The microphones of the Broadcast Line range also have an internal suspension that absorbs noise transmitted by the stand, ensuring compatibility with articulated microphone stands specific to broadcast applications.
Acoustic characteristics
The response curve has a slight accentuation in the treble, in a region of the spectrum between 2 and 9 kHz, for better intelligibility of the voice. The response in the low frequencies is optimized to avoid any overemphasis of the bass due to the proximity effect.
Integrated pop shield
The pop shield does not only serve to attenuate plosives, which cause unpleasant interference when recording voices; it prevents any unwanted bodies - spit, nicotine, water vapour from breathing, food particles, etc. - from attaching to the membrane. It can be easily disassembled, without tools, for cleaning.
Mounting
The recommended use is to mount the BCM 104 or BCM 705 on a standard studio boom stand.

A thread adapter is supplied, allowing screwing onto different stand models. To ensure effective protection against noise transmitted by the stand, both the capsule and the microphone have an elastic suspension.

The optional SG 5 mounting ball joint allows the microphone to be tilted by +/-90 degrees.
* The design of this microphone is registered by Georg Neumann GmbH in certain countries.

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