PRO 25ax

HYPERCARDIOID DYNAMIC

INSTRUMENT MICROPHONE

 

 

 

 

Ideal for kick drum, percussion, brass, and other highly dynamic

 

instruments

Excels in high-SPL applications

Warm low-frequency response with excellent presence

PRO 25ax SPECIFICATIONS

ELEMENT

Dynamic

POLAR PATTERN

Hypercardioid

 

 

FREQUENCY RESPONSE

30-12,000 Hz

 

 

OPEN CIRCUIT SENSITIVITY

– 54 dB (1.9 mV) re 1V at 1 Pa*

 

 

IMPEDANCE

600 ohms

 

 

WEIGHT (less accessories)

8.1 oz (230 g)

 

 

DIMENSIONS

4.45" (113.0 mm) long,

 

1.97" (50.0 mm) maximum diameter

 

 

OUTPUT CONNECTOR

Integral 3-pin XLRM-type

 

 

ACCESSORIES FURNISHED

AT8471 isolation clamp for 5/8"-27

 

threaded stands; 5/8"-27 to 3/8"-16

 

threaded adapter; soft protective pouch

In the interest of standards development, A.T.U.S. offers full details on its test methods to other industry professionals on request.

*1 Pascal = 10 dynes/cm 2 = 10 microbars = 94 dB SPL Specifications are subject to change without notice.

Superior off-axis rejection for maximum gain before feedback

Versatile mounting options and effective dampening of

 

mechanical noise thanks to included AT8471 isolation clamp

Corrosion-resistant contacts from gold-plated XLRM-type

 

connector

Rugged design and construction for reliable performance

Hypercardioid polar pattern improves isolation of desired sound

 

source

Output from the microphone’s XLRM-type connector is low impedance (Lo-Z) balanced. The signal appears across Pins 2 and 3; Pin 1 is ground (shield). Output phase is “Pin 2 hot”– positive acoustic pressure produces positive voltage at Pin 2.

To avoid phase cancellation and poor sound, all mic cables must be wired consistently: Pin 1-to-Pin 1, etc.

The PRO 25ax includes an AT8471 isolation clamp to provide secure mounting, versatile positioning, and effective dampening of unwanted mechanical noise.

Take care to keep foreign particles from entering the windscreen. An accumulation of iron or steel filings on the diaphragm, and/or foreign material in the windscreen’s mesh surface, can degrade performance.

Polar Pattern

 

0

330

30

300

60

270

90

240

120

210

150

 

180

SCALE IS 5 DECIBELS PER DIVISION

LEGEND

200 Hz

1 kHz

5 kHz

8 kHz

Frequency Response

 

 

in dB

 

 

 

 

10 dB

Response

 

 

 

50

100

200

500

1k

2k

5k

10k

20k

 

 

 

 

Frequency in Hertz

 

 

 

 

LEGEND

 

 

12" or more on axis

 

 

 

 

 

 

 

 

 

 

 

 

Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224

Audio-Technica Limited, Old Lane, Leeds LS11 8AG England

www.audio-technica.com

P51676-EN ©2004 Audio-Technica U.S., Inc. Printed in Japan

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Audio-Technica specifications PRO 25ax, Hypercardioid Dynamic, Instrument Microphone