AKG HC644 MD Head-Worn Microphone

Following up on the legendary performance of the C544 and C555, AKG has created the next generation of head-worn microphone, the new HC644 MD. This high-performance head-worn condenser microphone is the perfect tool for presenters in the corporate market but also ideal for sport applications like aerobics. More and more wireless systems in the low to mid-price range are based on 2.4 GHz technology causing nasty interference with microphones. The new HC644 MD is well protected against those problems. The main improvements of the new version are a smaller capsule design with a higher sensitivity, an exceptional RF shielding, a sweat-resistant design and the ability to fit to all major wireless systems on the market.

Key Features

• Studio-quality sound
• High RF rejection
• Highly moisture-resistant design
• Uniform polar pattern
• Microdot adapter

Technical Specifications

Type
Back-electret condenser
Polar Pattern
Cardioid
Sensitivity (1m)
20 mV/Pa (9V/18kOhms)
Audio frequency bandwidth
100 - 15000 Hz (+/-3dB)
Electrical impedance
200 Ohms
Recommended load impedance
2000 Ohms
Equivalent noise level
34 dBA
Signal to Noise (1Pa)
60 dBA
Max. SPL for 1 % THD
135 dB
Temperature range
-20°C to +60°C (14°F - 140°F)
Dimensions
Length
200 mm
Width
130 mm
Height
35 mm
Net Weight
30 g (including cable)
Audio Output
Connector
2-pin Microdot
Powering Interface
Operation voltage
9V (2V - 10V)
Recommended serial impedance
18kOhms (2kOhms - 18kOhms)
Current Consumption
500A RL=2.2Kohms Vs=2.0VDC