Audio Technica OMNIDIRECTIONAL DYNAMIC AT804 Specifications

AT804
OMNIDIRECTIONAL DYNAMIC MICROPHONE
• Ideal for interviews, sportscasting 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
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. 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.
Plug Type Ground
XLR Pin 1
1 / " "TRS" Sleeve
4
1 / " Sleeve
4
The high sensitivity of the AT804 assures useful output and an
excellent match to most input sources. In some cases, however, an
attenuator such as the Audio-Technica AT8202 may be required
between the microphone and preamplifier to avoid overloading
sensitive input stages.
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.
Audio "+" Audio "-"
Pin 2 Pin 3
Tip Ring
Tip Sleeve
AT804 SPECIFICATIONS †
ELEMENT
POLAR PATTERN
FREQUENCY RESPONSE
OPEN CIRCUIT SENSITIVITY
IMPEDANCE
WEIGHT (less accessories)
DIMENSIONS
OUTPUT CONNECTOR
ACCESSORIES FURNISHED
† 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.
Polar Pattern
0
30
330
300 60
270 90
240
120
50 100
210 150
180
SCALE IS 5 DECIBELS PER DIVISION
LEGEND
LEGEND
200 Hz same as 1 kHz
1 kHz
5 kHz
8 kHz
Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
www.audio-technica.com
P51661-EN ©2004 Audio-Technica U.S., Inc.
Dynamic
Omnidirectional
50-15,000 Hz
–49 dB (3.5 mV) re 1V at 1 Pa*
600 ohms
7.5 oz (213 g)
5.94" (151.0 mm) long,
1.42" (36.0 mm) head diameter
Integral 3-pin XLRM-type
AT8405a stand clamp for 5 / "-27
8
threaded stands; soft protective
pouch
Frequency Response
200 500 1k 2k 5k 10k 20k
Frequency in Hertz
12" or more on axis
Printed in Japan
10 dB