AKG Acoustics Microphone C547BL User Manual

C 547BL  
Boundary Layer Condenser Microphone  
Description  
The C 547 BL is a condenser boundary layer microphone  
with a hypercardioid pickup pattern. Its rugged construction  
permits it to be used on the floor, where it can withstand  
accidental footsteps. It has a switchable low frequency roll-  
off filter to minimize footfalls on stage. The microphone  
works as well on a tabletop.  
Microphone sensitivity is 8.5 mV/Pa, and total harmonic  
distortion (THD) is 1% at an acoustical operating level of  
133 dB. The equivalent noise floor is 22 dB-A. The  
microphone operates on phantom powering over the range of  
9 to 52 volts dc. The finish is matte black, and the  
microphone can be painted any color to match decor.  
The connector is a 3-Pin XLR.  
Specifications  
Transducer Principle:  
Frequency Range:  
Polar Pattern:  
Condenser prepolarized  
3018,000 Hz  
Hypercardioid  
Features  
Sensitivity at 1,000 Hz:  
Equivalent Noise Level:  
8.5 mV/Pa (-42dBV)  
< 22 dB-A  
• Non-crush construction  
• Inconspicuous  
Sound Pressure Level for 1% THD: 133 dB  
S/N Ratio (A-weighted): > 72 dB  
• Unidirectional pickup  
• Paintable  
Electr. Impedance:  
Load Impedance:  
< 400 ohms  
> 1,000 ohms  
Low frequency roll-off:  
switchable bass-cut  
12 dB/octave, 200 Hz  
Power Requirement:  
Connector:  
Cable Length:  
Finish:  
952 volts phantom powering  
3-Pin XLR-type  
10 ft. (3 m)  
Matte dark gray  
Size:  
7.3 x 4.7 x 0.8 in.  
(185 x 120 x 20 mm)  
Net/Shipping Weight:  
Included Accessories:  
Optional Accessories:  
5.6 oz. (160 g)/14.8 oz. (420 g)  
W 547 Windscreen  
B 18 Battery power supply  
 

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