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AKG C 12 VR
Photo: AKG, from its quick guide, p. 1.

AKG

AKG C 12 VR

Tube (6072) condenser, large dual-diaphragm (CK 12), multi-pattern studio mic with nine patterns switched remotely from its N 12 VR power unit: the 1990s reissue of the C 12

Approximate Some readings for this mic are uncertain; see the graphs.

Type
Condenser
Pattern
Omni / cardioid / figure-8
Sensitivity
−40 dBV/Pa
Self-noise
22 dB(A)
Max SPL
128 dB SPL
Impedance
200 Ω
Rated range
30 – 20k Hz

Frequency response

Angle
Distance

Frequency response: from the quick guide, p. 9. "Frequency Response", "Omnidirectional"; relative dB, labelled +20 to -30. Distance, room and smoothing not stated.

Dashed: outside the rated range, or simulated (other angles and distances). Hover or tap the graphs for values.

Polar pattern

Polar pattern: from the quick guide, p. 9. "Polar Response", omni: two half-plots, 0° at the bottom (left: 125/250/500/1000 Hz solid; right: 2000/4000 Hz solid, 8000 Hz dotted, 16000 Hz dash-dot). Rings labelled 0, -10, -20 (5 dB per ring); centre circle -30 dB. Measuring conditions not stated. Approximate reading error up to about 1.5 dB.

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All specs

From the quick guide
CapsuleCK 12 dual-diaphragm capsule. Spare parts: "capsule CK 12", ordering code 2072 Z 0008.p. 9
Sensitivity−40 dBV/Pa (10 mV/Pa), 1 kHz. "10mV/Pa –40 dBV*)"; "*) The sensitivity may be increased by 10 dB with a switch on the p. c. board."p. 7
Self-noise22 dB(A), DIN 45412, A-weighted. "22 dB-A (acc. to DIN 45412, A weighted)".
Self-noise (CCIR 468)32 dB, DIN 45405 / CCIR 468-2
Max SPL128 dB SPL, 3% THD. "For k=3 %=128 dB SPL 50 Pa".
Output impedance200 ohm, ±25%
Rated load impedance1000 ohm, recommended
Rated frequency range30 Hz to 20 kHz, ±2.5 dB from published curve
PoweringN 12 VR power unit, 115/230 V AC +15/−10% (50-60 Hz). "Via the included powering unit N 12 VR"; it supplies the filament and plate voltages (page 6).
Pad−10 dB; also −20 dB. "Pre-attenuation: Switchable to –10 dB and –20 dB".
Connectorlarge 12-pin Tuchel on the mic (MK-Tube cable to the N 12 VR); XLR-3 audio output on the power unit. "Connector: Large-sized Tuchel, 12 pin"; page 6: "The audio frequency may be taken from the power unit transformer balanced by a conventional audio cable with standard XLR-type connector."
Weight680 g, net
Dimensions42 × 225 mm. "42 ø × 225 mm"; stored as diameter × length.
Supplied accessoriesN 12 VR powering unit; MK-Tube 10 m connection cable; H 15/T elastic suspension; W 42 foam windscreen; heavy-duty flight casep. 9
Tube6072 (specially selected)p. 6
Sensitivity switchInternal: three p.c. board switches raise the sensitivity by 10 dB
Roll-off filterTwo-position filter, remotely controllable from the power unitp. 7
Pattern selectionNine positions, remotely from the N 12 VR power unit
Cable lengthBeyond 20 m between mic and power unit, move the 250 mA fuse link in the N 12 VR to the "> 20 m" holderp. 6
Shipping weightapprox. 4.5 kg (~10 lbs)p. 7
Fuses (N 12 VR)Primary T 100 mA; anode circuit 50 mA fast-blowp. 6

Documents

Copies kept by Mic Archive, because manufacturers move and drop their documents. Each is © AKG, unchanged, with its original address.

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