C 400BL
Boundary Layer Condenser Microphone
Description
The AKG Model C 400 BL is a unidirectional boundary
layer microphone intended for table top use. The
microphone’s frequency range has been tailored for speech
applications through a gentle bass roll-off below 200 Hz and
a slight high frequency peak centered at 6 kHz, with a gentle
roll-off above that frequency.
The combination of both narrow pickup angle and
frequency response limited to the voice range makes the
microphone doubly insensitive to ambient noise, a design
known as DNC (Dual Noise Canceling).
The microphone has a high sensitivity of 13.5 mV/Pa and is
available with either a 3-pin XLR connector or a B-lock jack
for the Model C 400 BL/1. The microphone is universally
phantom powered over the range from 9 to 52 volts dc.
Cable length is 5 feet (1.5 meters).
The microphone’s matte black finish can be painted to
match surrounding decor.
Specifications
Transducer Principle: Condenser prepolarized
Frequency Range:
Polar Pattern:
40–14,000 Hz
Hypercardioid
Sensitivity at 1,000 Hz: 13.5 mV/Pa (-37 dBV)
Equivalent Noise Level: < 32 dB-A
Features
Sound Pressure Level for 1% THD: 115 dB
S/N Ratio (A-weighted) :> 62 dB
• Small & inconspicuous
• Speech optimized
• Unidirectional pickup
• Repaintable
Electr. Impedance:
Load Impedance:
Power Requirement:
Connector:
< 200 ohms
> 2,000 ohms
1.5 to 15 volts
3-Pin XLR-type
(B-Lock Jack for C 400 BL-1)
Cable Length:
Finish:
5 ft. (1.5 m)
Non-reflective black
Size:
1.7 x 0.9 x 0.5 in.
(43 x 23 x 13 mm)
Net Weight:
0.2 oz. (5.5 g)
Included Accessories: Clip-on mounting plate,
Phantom power adapter (for C400BL)
Optional Accessories: B 18 Battery power supply
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