Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
www.audio-technica.com
P51964 ©2008 Audio-Technica U.S., Inc. Printed in Taiwan
SCALE IS 5 DECIBELS PER DIVISION
Polar Pattern
200 Hz
LEGEND
5 kHz
1 kHz
8 kHz
12" or more on axis
LEGEND
Frequency in Hertz
Frequency Response
Response in dB
• Ideal for interviews, sports broadcasting and as the “mono” mic
when used in conjunction with a stereo microphone
• Omnidirectional polar pattern provides natural reproduction of
surrounding ambience
•Rugged housing with hardened-steel grille stands up to field use
• Internal shock mounting minimizes handling and cable noise
Ou tput 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. For a high-impedance
(Hi-Z) mic input, connect a Lo-Z balanced cable to a Hi-Z matching
transf
ormer (Audio-Technica CP8201 or equal) at the equipment
input.
Plug Type Ground Audio “+” Audio “-”
XLR Pin 1 Pin 2 Pin 3
1
/4" “TRS” Sleeve Tip Ring
1
/4" Sleeve Tip Sleeve
The microphone is RoHS compliant–free from all substances
specified in the EU directive on hazardous substances.
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.
AT8004 SPECIFICATIONS
†
ELEMENT
Dynamic
POLAR PATTERN
Omnidirectional
FREQUENCY RESPONSE
80-16,000 Hz
OPEN CIRCUIT SENSITIVITY
–51 dB (2.8 mV) re 1V at 1 Pa*
IMPEDANCE
300 ohms
WEIGHT
160 g (5.6 oz)
DIMENSIONS
150.5 mm (5.93") long,
35.8 mm (1.41") head diameter
OUTPUT CONNECTOR
Integral 3-pin XLRM-type
ACCESSORIES FURNISHED
AT 8405a stand 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
1
Typical, A-weighted, using Audio Precision System One.
Specifications are subject to change without notice.
AT8004
OMNIDIRECTIONAL DYNAMIC MICROPHONE
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