Specifications

CK 77 WR / C 577 WR
Item numbers
C 577WR 2441Z0031
CK 77WR OC 2441Z0042
CK 77WR OC/P 2241Z0045
CK 77WR L 2441Z0039
CK 77WR L/P 2441Z0040
CK 77WR OC/W 2441Z0052
Patents
AT 407.322
US 6.351.543
• Extremely small lavalier microphone, 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..
Installed
Sound
SPECIFICATIONS
Polar pattern: omnidirectional
Frequency range: 20 to 20,000 Hz
Sensitivity: 8 mV/Pa (-42 dBV)
Max. SPL for 1% THD: 133 dB
Equivalent noise level (CCIR 468-3): 37 dB
Equivalent noise level: 26 dB-A
Signal/noise ratio (A-weighted): 68 dB
Impedance: CK 77WR: ≤3,500 ohms, C 577WR: ≤400 ohms
Recommended load impedance: CK 77WR: ≥10,000 ohms
C 577WR: ≥2000 ohms
Powering: CK 77WR: 1.5 V to 12 V
C 577WR: 9 V to 52 V to DIN/ IEC
Current consumption: ≤0.6 mA
Connector: CK 77WR L: 3-pin mini XLR
CK 77WR OC: unterminated
C 577WR: 3-pin XLR
Cable: CK 77WR: 1.5 m (5 ft.), C 577WR: 3 m (10 ft.)
Finish: CK 77WR: various matte colors
C 577WR: matte black
Dimensions: 5.5 dia. x 14 mm (0.2 dia. x 0.55 in.)
Net/shipping weight: CK 77WR: 0.4/85 g (0.014/3 oz.)
C 577WR: 0.4/146 g (0.014/5.2 oz.)
Standard accessories: CK 77WR: adhesive compound,
H 40/1, H 41, moisture shield, PB 77, W 77
C 577WR: adhesive compound, H 39, H 40/1, H 41,
moisture shield, PB 77, W 77
Optional accessories:
CK 77WR: MPA IIIL, W 77 M, W 77 M/P, W 77 Set
C 577WR: B 15, B 18, MK 9/10, N 62E, N 66E,
W 77M, W 77 M/P, W 77 Set
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