Specifications - DPA BLM4060 User Manual

Boundary layer microphone
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Specifications

Directional characteristics
Omnidirectional, hemisphere
Principle of operation
Pressure
Cartridge type
Pre-polarized condenser element
Frequency range, ± 2 dB
20 Hz – 1 4 kHz
(with a 7 dB soft boost at 8 KHz)
Sensitivity, nominal ± 3 dB at 1 kHz
20 mV/Pa -34 dB re. 1 V/Pa
Equivalent noise level, A-weighted
Typ. 23 dB(A) re. 20 µPa (max. 26 dB(A))
Equivalent noise level ITU-R BS.468-4
Typ. 35 dB (max. 38 dB)
S/N ratio, (A-weighted) re. 1 kHz at Pa (94 dB SPL)
7 1 dB(A)
Total Harmonic Distortion (THD)
<1% up to1 23 dB SPL peak
<1% up to 1 20 dB SPL RMS sine
Dynamic range
Typ. 100 dB
Max. SPL, peak before clipping
1 34 dB
Output impedance
From MicroDot: 30 – 40 ohm
From DAD6001: 100 ohm
Cable drive capability
Up to 300 m (984 ft)
Power supply
For wireless systems: Min. 5 V – max. 50 V through
DPA adapter
With DAD6001-BC/DAD6024/DAD4099:
48 V phantom power ±4 V for full performance

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