AKG Acoustics GmbH

CK 77 WR/C 577 WR



  • Excellent tool for recording and broadcast applications
  • Resistant to moisture, perspiration, and salts
  • Dual-diaphragm transducer for suppression of cable noise
  • Superior sound, compatible to all popular wireless transmitters

Extremely small omnidirectional lavalier microphone. The patented dual-diaphragm capsule has been designed specifically to protect the transducer from moisture and perspiration. The capsule uses two vertical diaphragms mounted back to back and connected out of phase to cancel out mechanical and cable noise, etc..

Available versions:
CK 77 WR L (3-pin mini XLR)
CK 77 WR L/P (flesh tone)
C 577 WR (black)

© 2009 AKG Acoustics GmbH

CK 77 WR (C 577 WR)
The microphone shall be an extremely small condenser clip-on design with an omnidirectional polar pattern and dual-diaphragm transducer. A special design and a moisture shield shall prevent water from penetrating into the capsule. The microphone shall have a practically flat frequency response from 20 Hz to 20 kHz. Sensitivity: 8 mV/Pa (–42 dBV); electrical impedance: ≤3500 (400) ohms; power requirement: 1.5 to 12 V DC; cable length: 1.5 m (5 ft.); net/shipping weight: 0.4/85 g / 0.014/3 oz (0.4/146 g / 0.014/5.2 oz.); size: 5.5 mm (0.2 in.) in dia., 14 mm (0.55 in.) long. Standard accessories shall include a windscreen, moisture shield, and adhesive putty. The microphone shall be available in the following versions: CK 77 WR L with 3-pin mini XLR connector, black; CK 77 WR L/P with 3-pin mini XLR connector, flesh-tone. The C 577 shall be identical to the CK 77 except that it shall operate on 9 to 52 V phantom power and be finished in black. The C 577 shall include a phantom power adapter and 3 m (10 ft.) cable.
 


Polar patternomnidirectional
Frequency range20 to 20,000 Hz
Sensitivity8 mV/Pa (-42 dBV)
Max. SPL133 dB (k=1%)
Equivalent noise level (CCIR 468-3)37 dB
Signal/noise ratio (A-weighted)68 dB
Impedance3500 ohms
Recommended load impedance>10,000 ohms
Current consumption<0.6 mA
Cable1.5 m (5 ft.)
Finishvarious matte colors
Net weight0.4 g / 0.014 oz.
Shipping weight85 g / 3 oz.
Patent(s)Pressure compensation cavity for condenser transducer (Patent no. AT 407.322, US 6.351.543)


CK 77 WR/C 577 WR
High-resolution image (JPG, 115.84 KB)