Beyerdynamic Classis GM 30 Series, Product Information

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Model Description . . . . . . . . . . . . . . . Order #
ZSA 305 Mounting adapter for the use of
Classis GM 305 TG with ZSH 20. . 723.037
ZSH 20 Shock-mounted holder for
desktop installation . . . . . . . . . . . 454.559
Technical Specifications
Classis GM 303 - 306 / GM 313 - 315
Transducer type . . . . . . . . . . . . . . . Electret condenser
Operating principle . . . . . . . . . . . . . Pressure gradient
Polar pattern . . . . . . . . . . . . . . . . . Cardioid
Frequency response . . . . . . . . . . . . 50 - 19,000 Hz
Open circuit voltage . . . . . . . . . . . . 17 mV/Pa
Nominal impedance . . . . . . . . . . . . < 200 Ω
Load impedance . . . . . . . . . . . . . . . ≥ 1 kΩ
Signal to noise ratio / noise voltage . . 69 dB [A] / 6.0 µV [A]
Max. SPL . . . . . . . . . . . . . . . . . . . . 107 dB
[SPL @ 1% THD]
Equivalent SPL. . . . . . . . . . . . . . . . 25 dB [A]
Wiring GM 30x/31xSP . . . . . . . . . . . balanced with 3-pin
XLR-plug
Wiring GM 31x/31xRC. . . . . . . . . . . 5-pin XLR-plug
Wiring GM 305 TG . . . . . . . . . . . . . balanced, 2.5 m
[8.2 ft.] long
connecting cable with
4-pin female mini XLR
connector for
MA-PVA (TG) phantom
power adapter with
3-pin XLR connector
Supply voltage GM 30x/31x . . . . . . . Phantom power
8 - 52 V
Supply voltage GM 31x SP/RC . . . . . Phantom power
8 - 52 V
Current consumption GM 30x/31x . . 2 mA
Current consumption GM 31x SP/RC . 9 mA
Current consumption LED ring with
internal resistor of 500 Ω
at 5 V supply voltage . . . . . . . . . . . . 6 mA
at 12 V supply voltage . . . . . . . . . . . 20 mA
Dimensions
Length . . . . . . . . . . . . . . . . . . . . . . depending on the version
Head diameter . . . . . . . . . . . . . . . . 13.6 mm [0.5"]
Gooseneck diameter . . . . . . . . . . . . 6 mm [0.2"]
Shaft diameter . . . . . . . . . . . . . . . . 20 mm [0.8"]
Weight . . . . . . . . . . . . . . . . . . . . . . depending on the version