Oktava MC 012 Condenser Microphone

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Technical Specifications

Mic type: Small diaphragm condenser
Phantom voltage required: ............................ 48 +\- 2V
Full impedance, module: .............. less than 300 ohms
Weighted SPL (ref. DIN 45412): ..................... 18 dBA
Maximum SPL in 250-8000Hz range,
(less than 0.5% THD): ...................................... 130 db
Weight: ................................................................... 70 gr.

Free field sensitivity at 1KHz: ...................... 10 mV/Pa
Free field sensitivity roll off from
40Hz to 20Hz should not exceed: ................. +\- 3 db

The difference in free field sensitivity between O° and
90° should be as follows:

For omnidirectional capsule:
in 40-1000 Hz range: .......................no more than 2 db
in 1-5 KHz range: .............................no more than 4 db
in 5-8 KHz range: .............................no more than 8 db

For cardioid capsule:
in 250-8000 Hz range: ......................no less than 4 db

For hypercardioid capsule:
in 250-5000 Hz range: .................. ...no less than 8 db

Average sensitivity difference between
O° and 180° for cardioid capsule
in 63-12500 Hz range: ........................................ 16 db

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A bit more info about Oktava mics can be found here:

http://microphones.ru/Oktava/Oktava_overview.html