Engineered and manufactured in Austria, The OC818 is Austrian Audio’s premier, professional, large diaphragm microphone. Its high sensitivity, low self-noise and ability to handle everything from a whisper to extreme SPLs make it the most advanced microphone for studio, broadcast and live applications. As the unique ceramic capsule design is so consistent, any OC818 is match-paired with any other OC818, and when in cardioid mode, it can also be match-paired with any OC18, its affordable, smaller sibling.
The heart of the OC818
CKR12 Ceramic Capsule - Making Passion Heard
We bring passion to everything we do, and nobody brings more than our engineering team. Every CKR12 ceramic capsule is handmade in-house at our facility in Vienna and now we are developing the next generation of transducer and microphone builders to serve our expanding customer-base.
Key Features
- Handmade CKR12 ceramic capsule: Made to the same critical dimensions as the classic CK12 capsules
- Multiple polar patterns: Cardioid, omnidirectional & custom programmable
- Microprocessor control of polarisation voltages: Allows remote controlled polar pattern settings
- Two different analogue high-pass filters with three settings: 40 Hz, 80 Hz, 160 Hz
- Two different types of analogue pads: -10 dB, -20 dB
- Dual outputs: for recording each diaphragm separately
Technical Specifications
Directional characteristics: Multi
Impedance: 275 Ω (symmetrical)
Polar pattern: cardioid, omnidirectional, figure-8, supercardioid & custom programmable
Frequency range: 20 Hz - 20 kHz
Supply voltage: 48 V (< 4mA, typical 2.1mA)
Sensitivity (all directions): 13mV/Pa
Main Connector: XLR 3 pin
Equivalent noise level: 9 dB SPL (A)
or remote: Mini XLR 5 pin Connector for back membrane
Max SPL: 148 dB SPL (158 dB SPL)
Dimensions: 157 x 63 x 35 mm
Switchable pad: -10 dB, -20 dB
Analog Low Cut filter: 40 Hz (2nd order), 80 Hz (2nd order), 160 Hz (1st order down to 80Hz, 2nd order below)
