Next Generation Broadcast Microphone
The BCM 104 is a dedicated broadcast microphone for radio, streaming and podcast, designed to convey emotion with Neumann perfection. Its functionally optimized design features an integrated pop screen and a shock protected large diaphragm condenser capsule, specially developed for speech. Transformerless circuitry ensures a direct, noise-free sound.

You Speak – The World Listens
Broadcast, live streaming and podcast are the most immediate ways to reach your listeners. That’s why Neumann decided to develop the BCM line to specifically address the requirements of radio DJs, announcers, newscasters, talk show hosts, podcasters 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 ensures 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 is 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 pre-attenuation 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 pre-attenuation 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.

Features

• 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

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 = –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, 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, CCIR (re. 94 dB SPL)¹⁾	76 dB
Signal-to-noise ratio, A-weighted (re. 94 dB SPL)¹⁾	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
Weight	500 g
Diameter	64 mm
Length	85 mm
Height	110 mm (without suspension)
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