AKG D 14S Dynamic Cardioid Microphone
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The instrument

The AKG D 14S Dynamic Cardioid Microphone was probably launched in 1957 or a little later. "The "sheet metal capsule", a dynamic capsule in a tight sheet-metal case, is developed and used over the following years in many AKG microphones including the D9, D 11, and D 14 as well as OEM microphones for Saba, Körting, Telefunken, Stuzzi, and Eumig." (Recordinghacks.com)

Details

Dual impediance (low-hi)
Frequency range: 60-50'000 Hz
Sensitivity: 0.22 mV/Pa
Impedance: 200 ohms