The C 747 is hypercardioid pickup is designed to be forgiving in its placement, making it an excellent choice for critical podium, pulpit or boardroom applications where speakers tend to move and wander off-axis. It also works well for pickup of orchestra and choirs where close miking just is not practical. The C 747 is tuned interference tube provides uniform off-axis rejection to control ambient noise and feedback in difficult environments, such as houses of worship.
C 747 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)
C 747 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