USM 69 i stereo microphone: Detail view

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Compact switchable stereo microphone for MS and XY stereophony, with freely adjustable pickup angles and selectable directional characteristics.
Zoom: USM 69 i stereo microphone
Acoustical operating principle Pressure gradient transducer
Direct ional pattern Omnidirectional, wide-angle cardioid, cardioid, hypercardioid, figure-8
Frequency range 20 Hz ... 20 kHz
Sensitivity at 1 kHz into 1 kohm 13 mV/Pa
Rated impedance 150 ohms
Rated load impedance 1 kohms
Equivalent noise level, CCIR1) 24 dB
Equivalent noise level, A-weighted1) 13 dB-A
Signal-to-noise ratio, CCIR1) (rel. 94 dB SPL) 70 dB
Signal-to-noise ratio, A-weighted1) (rel. 94 dB SPL) 81 dB
Maximum SPL for THD 0.5%2) 132 dB
Maximum output voltage 3 dBu
Supply voltage (P48, IEC 61938) 48 V ± 4 V
Current consumption (P48, IEC 61938) 2 x 0.7 mA
Matching connector XLR5F
Weight 510 g
Diameter 30 + 48 mm
Length 293 mm
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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



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