The Neumann BCM 104 is a large-diaphragm condenser microphone from Neumann's Broadcast Line. It has a cardioid pickup pattern and is designed for speech and music in professional broadcast studios. Uses include news, round-table discussions, radio plays and musical recordings.
The frequency response is flat up to 3 kHz and then gradually boosted in the higher frequencies. Internal switches let you compensate for the proximity effect and reduce the sensitivity by 14 dB.
The microphone has integrated pop protection and an integrated elastic suspension. The headgrille attaches with a bayonet mount for easy removal and cleaning. Replacement headgrilles are identified by colored rings. The body is mechanically compatible with standard studio boom arms.
- Type
- Large-diaphragm condenser
- Directional pattern
- Cardioid
- Operating principle
- Pressure gradient transducer
- Frequency range
- 20 Hz to 20 kHz
- Sensitivity
- 22 mV/Pa at 1 kHz into 1 kohm; 4.4 mV/Pa at -14 dB attenuation
- Rated impedance
- 50 ohms
- Rated load impedance
- 1 kohm
- Equivalent noise level
- 18 dB (CCIR); 7 dB-A (A-weighted)
- Signal-to-noise ratio
- 76 dB (CCIR); 87 dB-A (A-weighted), rel. 94 dB SPL
- Max SPL
- 138 dB for THD 0.5%; 152 dB with pre-attenuation
- Max output voltage
- 10 dBu
- Dynamic range
- 131 dB (A-weighted, mic amplifier)