AKG C-12

Classic Tube Microphone Daily Rate: $100

Features | Technical Specifications | Support

The C 12 is a studio condenser microphone of the highest professional quality. It has been specially designed for use in sound recording and broadcasting studios, and is therefore the choice of many studios both at home and abroad.

Nine different directional characteristics can be selected by means of a remote control unit without any change in frequency response or sensitivity. In addition to three basic characteristics, omni-directional, cardioid and bi-directional, six intermediate patterns (including hypercardioids) are available. The S 12 control unit is connected to the N 12 power supply unit by the RL 12 remote control cable, and the power supply unit to the microphone by the MK 12 microphone cable.

FEATURES:

The heart of the sound of the C12 is its capsule, which uses a dual-backplate design invented by two Siemens engineers and results in consistent on-axis sensitivity when the polar pattern is changed. The C12's CK-12 capsule paired the dual-backplate approach with two 10-micron diaphragms. (Two years later, the CK-12 capsule was upgraded to 6-micron Mylar capsules.) To expand AKG's postwar distribution, the mic was also re-branded by Telefunken as the M251 and as Siemens' SM 204. 

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TECHNICAL SPECIFICATIONS:

Frequency Range: 20 to 20,000 cps

Frequency Response: ± 2 dB related to published curve

Directional Characteristics (nine different positions): omni-directional. Cardioid: better than 20 dB front-to-back ratio at 180° sound incidence,
bi-directional: 20 dB front-to-back ratio

Sensitivity: 1.0 mV/µbar (-60 dB re 1 V/dyne/cm²), unloaded (200 ohms)

Equivalent Noise Level: less than 20 dB

Impedance: 50/200 ohms (change solder lugs)

Tube Complement: 1 x 6072, 6.3 volts DC filament voltage, 120 volts DC plate voltage

Mains Connection: 110/125/145/220/245 volts AC at 50/60 cps

Stand Connector: ³⁄₈", ½", ⁵⁄₈"-27 with microphone cable MK 12

Dimensions: 10" (255 mm) with connector, ¹¹⁄₁₆" diameter (43 mm)

Weight: 1 lb. 3.2 oz. net (560 g), shipping weight 29 lbs. 12.8 ozs. (13.5 kg) 

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SUPPORT DOCUMENTS, DOWNLOADS AND MANUALS:

• AKG C-12 Brochure (PDF, 122.4 M)
• AKG C-12 Polar Patterns (7.1 M)
• AKG C-12 Schematic (53.2 M)

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