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AKG Acoustics C400BL User Manual

C 400 bl, Boundary layer condenser microphone description, Features

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C 400 BL

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.

Features

• Small & inconspicuous
• Speech optimized
• Unidirectional pickup
• Repaintable

Specifications

Transducer Principle:

Condenser prepolarized

Frequency Range:

40–14,000 Hz

Polar Pattern:

Hypercardioid

Sensitivity at 1,000 Hz: 13.5 mV/Pa (-37 dBV)

Equivalent Noise Level: < 32 dB-A

Sound Pressure Level for 1% THD: 115 dB

S/N Ratio (A-weighted) :> 62 dB

Electr. Impedance:

< 200 ohms

Load Impedance:

> 2,000 ohms

Power Requirement:

1.5 to 15 volts

Connector:

3-Pin XLR-type
(B-Lock Jack for C 400 BL-1)

Cable Length:

5 ft. (1.5 m)

Finish:

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