Reference head-worn microphone
The HC577 L is an extremely small reference head-worn microphone, designed for on-stage use. The microphone uses a CK77 omnidirectional transducer that has been an industry standard for lavaliere capsules for years and ensures superior audio performance. A patented body design protects the microphone from moisture and perspiration. The capsule uses the signal of two vertical diaphragms mounted back to back, mixed out of phase to cancel out mechanical and cable noise.

The HC577 L provides a professional three-pin mini XLR connector that fits the body-pack transmitters of all AKG wireless microphone systems.

Adjustable headband and left/right selectable boom
for maximum comfort and flexibility
Dual-diaphragm transducer
for suppression of cable noise
Resistant to moisture, perspiration and salts
withstands sudorific stage performances
Interchangeable capsule module
for quick and easy service
Omnidirectional polar pattern
for unchanging sound quality in all directions

General
Audio Frequency bandwidth: 20 to 20000 Hz
Sensitivity: 8 mV/Pa
Equivalent Noise Level: 26 dB-A
Signal to Noise: 68 dB-A
Electrical Impedance: 3500 Ohms
Recommended Load Impedance: 10000 Ohms
Polar Patterns
Omnidirectional
Powering Interface
Voltage: 1.5 to 12 V
Current: 0.6 mA
Audio Output
Type: Mini XLR
Gender: Female
Contacts: 3-pin
Design
Finish: flesh tone
Dimensions / Weight
Height: 205 mm
Diameter: 145 mm
Net Weight: 28 g