AKG Acoustics C400BL specifications Boundary Layer Condenser Microphone Description, Features

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:	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

Features

•Small & inconspicuous

•Speech optimized

•Unidirectional pickup

•Repaintable