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Audix ADX51

Cardioid Pencil Condenser Microphone

The Audix ADX51 is a cardioid pencil condenser using a 14mm back-electret capsule.

The published frequency response describes a very bright microphone, with a low-frequency -3dB point at 200Hz and a generally rolled-off response below 1kHz. There is a +6dB peak at 9kHz.

The microphone’s polar pattern is described as Cardioid, but the published graphs show the mic tending toward Omnidirectional below 500Hz, with only ~7dB rear rejection at 125Hz. At higher frequencies, the pattern tightens up somewhat, but retains the characteristic rear lobe of a Supercardioid pattern.

Switches on the mic body enable the optional -10dB pad and high-pass filter (@ 150Hz).

The Audix ADX51 is also known as: ADX-51.

Specifications

Pickup Patterns	Pads & Filters
CHART Cardioid (17 mV/Pa; 200 - 18,000 Hz)	Pad: -10 dB (Via Switch) Filter: HPF @ 150Hz (Via Switch)

Capsule Dimensions	Impedance	SPL/Noise
Diaphragm diameter: 14mm	100 Ohms (Low)	Max SPL: 132 dB

Weight	Length	Max Diameter	Interface(s)
184g (6.49oz)	160mm (6.30'')	19mm (0.75'')	3-pin XLR male (1)

Power Specifications
Requires phantom power Phantom voltage: 9-52v

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