Beyerdynamic Opus 39 Information De Produit page 5

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Technical Specifications
Transducer type . . . . . . . . . . . . . . Dynamic
Operating principle . . . . . . . . . . . Pressure gradient
Frequency response:
Close miking. . . . . . . . . . . . . . . . . 50 - 16,000 Hz
Distant miking . . . . . . . . . . . . . . . 100 - 14,000 Hz (measured at 1 m)
Polar pattern . . . . . . . . . . . . . . . . Supercardioid
Rear attenuation at 1 kHz . . . . . . > 20 dB at 135°
Open circuit voltage at 1 kHz . . . 3 mV/Pa
Nominal impedance . . . . . . . . . . . 600 Ω
Load impedance. . . . . . . . . . . . . . 1 kΩ
Connection . . . . . . . . . . . . . . . . . . 3-pin XLR male
Dimensions . . . . . . . . . . . . . . . . . . Length: 179 mm
Weight without cable . . . . . . . . . 310 g
Shaft diameter: 25/33 mm
Head diameter: 45 mm