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• Professional-quality vocal pickup with hands-free operation
• Ideal for guitarists, keyboard players, drummers and others who
need the use of their hands during performance
• Hi-ENERGY
®
neodymium element for articulate vocal
reproduction
• Low-visibility, lightweight headband and cushioned support pads
provide stable, comfortable fit
• Pivot-mounted flexible mic boom descends from left or right side
• Hypercardioid polar pattern improves isolation of desired sound
source
• Also available as: PRO 8HEcW — 55" (1.4 m) cable terminated
with locking 4-pin connector for A-T UniPak
™
wireless systems
Output 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. For a high-impedance (Hi-Z)
mic input, connect a Lo-Z balanced cable to a Hi-Z matching
transformer (A-T CP8201 or equal) at the equipment input.
For maximum stability and minimum visibility, the adjustable
headband should be worn around the back of the head, with each
cushioned support pad resting on the temple in front of the ear.
The cable should remain clipped to the headband, with some slack
at the boom connection.
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.
PRO8HEx SPECIFICATIONS
†
ELEMENT Dynamic
POLAR PATTERN Hypercardioid
FREQUENCY RESPONSE 200-18,000 Hz
OPEN CIRCUIT SENSITIVITY –55 dB (1.7 mV) re 1V at 1 Pa*
IMPEDANCE 600 ohms
WEIGHT 2.1 oz (60 g)
DIMENSIONS
HEADSET
4.72" (120.0 mm) nominal at widest
point;
3.17" (80.5 mm) flexible boom
MICROPHONE 0.80" (20.4 mm) diameter
OUTPUT CONNECTOR 3-pin XLRM-type on cable
CABLE 7.2' (2.2 m) long, 0.11" (2.8 mm)
diameter miniature audio cable
permanently attached between
microphone and XLRM-type
connector
ACCESSORIES FURNISHED AT8139L large windscreen;
AT8139S small windscreen;
AT8439 clothing clip
†
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.
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
www.audio-technica.com
P51685-EN ©2004 Audio-Technica U.S., Inc. Printed in U.S.A.
PRO 8HEx HYPERCARDIOID DYNAMIC HEADWORN MICROPHONE
SCALE IS 5 DECIBELS PER DIVISION
Polar Pattern
200 Hz
LEGEND
5 kHz
1 kHz
8 kHz
240
180
210
270
300
330
0
150
120
90
30
60
12" or more on axis
100
50
200
LEGEND
10k
5k
1k
500
2k
20k
Frequency in Hertz
Frequency Response
Response in dB
10 dB