AKG Acoustics C747 - Manual

C 747
Condenser Microphone
Description
The AKG Model C 747 gradient condenser microphone
uses a short section interference tube to enhance its
directional characteristics, making it an excellent choice for
unobtrusive speech applications when mounted on a podium
or lectern, or for teleconferencing activities. The microphone
is about the size of a ballpoint pen and the mini-gooseneck
extension facilitates adjustment and height. The finish is dark
gray matte. Frequency response extends from 30 Hz to 18
kHz, and polar response is very uniform. The microphone
can handle sound pressure levels of 133 dB with only 1%
THD and operates with phantom powering over the standard
ranges from 12 to 48 volts.
Features
• Slim profile for unobtrusive podium
mounting
• Extended low and high frequency
response
• Hypercardioid pattern for
excellent off-axis rejection
• High sensitivity (8.5 mV/Pa)
• High acoustic level capability
(133 dB-SPL for 1.0% THD)
Specifications
Transducer Principle: Pre-polarized condenser
Frequency Range: 30–18,000 Hz
Polar Pattern: Hypercardioid
Sensitivity at 1,000 Hz: 8.5 mV/ Pa =
^ -42 dBV
Equivalent Noise Level: 21 dB-A
Sound Pressure Level for 1% THD: 133 dB
S/N Ratio (A-weighted): 73 dB
Electr. Impedance: ≤ 400 ohms
Load Impedance: > 1,500 ohms
Power Requirement: 9-52 volts phantom powering
Connector: 3-pin XLR type
Cable Length: 10 ft. (3 m)
Finish: Dark gray matte
Size: Dia 0.35 in. (9 mm),
Length 5.4 in. (137 mm)
Net/Shipping Weight: .9 oz. (25 g)/26.5 oz. (750 g)
Included Accessories: H 47 Shock mount/adapter
W 70 Windscreen,
MSH 70 Short gooseneck,
SA 47 Swivel stand adapter,
SA 80 Clamp, SHZ 80 screw link
Optional Accessories: ST 45, ST 46 Table stands
MSH 80 Long gooseneck;
B 18 E Battery supply
MF-DA Mounting flange