You Speak – the World Listens
Broadcast is a much more immediate way to reach the listeners than studio recording. That’s why Neumann decided to develop a microphone that specifically addresses the needs and working conditions of radio DJs, announcers, newscasters, talk show hosts, and all those who guide us through the day with their stories, good vibes, and the latest information.
The BCM 104 is designed to convey emotion with perfection. Its characteristic shape is functionally optimized for use with industry standard microphone boom arms. Thanks to its elastic mount, the BCM 104 is well protected against structure borne noise. An integrated pop screen behind the headgrille protects the capsule from air blasts and plosives. For increased hygiene, the headgrille twists off easily for quick cleaning.
The large diaphragm condenser capsule of the BCM 104 captures each nuance of your voice without coloration or unwanted artifacts. The BCM 104’s electronic circuit has an extremely low self-noise of only 7 dB-A and can handle enormous sound pressure levels of up to 138 dB without distortion. Its balanced output operates transformerless to ensure minimal hum interference and high common mode rejection against extraneous signals e.g. from computer screens. A subsonic filter suppresses frequencies below 20 Hz. For close speech operation, an optional 100 Hz low cut is available to compensate for the proximity effect. A second switch activates a –14 dB preattenuation to reduce the BCM 104’s output level for use with equipment designed for dynamic microphones (which typically have a much lower sensitivity than condenser microphones). Both switches are hidden inside the microphone as the low cut and preattenuation options are usually selected only once, at setup.
Designed for the Human Voice
The BCM 104 has a fixed cardioid pattern with excellent rejection of rearward sound. Its frequency response is very linear with a gentle presence boost around 4 kHz and a slight treble lift above 10 kHz for enhanced speech intelligibility. Due to its outstanding transient response, the BCM 104 captures each nuance of the human voice with stunning detail. Because of its wide frequency response, the BCM 104 can be used for much more than speech applications, e.g. sung vocals and a wide variety of instruments.
- Functionally optimized design
- Specially designed large diaphragm condenser capsule
- Tight cardioid pattern
- Integrated pop screen and shock mount
- Headgrille twists off easily for quick cleaning
- Internal pad and low cut switches
The Neumann BCM series also includes a variant with a dynamic capsule, the BCM 705
|Acoustical operating principle||Pressure gradient transducer|
|Frequency Range||20 Hz ... 20 kHz|
|Sensitivity at 1 kHz into 1 kohm||22 mV/Pa = –33.1 dBV ± 1 dB|
|Sensitivity at –14 dB attenuation||4.4 mV/Pa|
|Rated Impedance||50 ohms|
|Rated load impedance||1 kohms|
|Equivalent noise level, CCIR 1||18 dB|
|Equivalent noise level, A-weighted 2||7 dB-A|
|Maximum SPL for THD 0.5% 3||138 dB|
|Maximum SPL for THD 0.5% with preattenuation 4||152 dB|
|Signal-to-noise ratio, CCIR (re. 94 dB SPL) 5||76 dB|
|Signal-to-noise ratio, A-weighted (re. 94 dB SPL) 6||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||XLR 3 F|
|Height||110 mm (without suspension)|