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Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio-Technica Limited, Old Lane, Leeds LS11 8AG England
One-Year Limited Warranty
Audio-Technica microphones and accessories purchased in the U.S.A. are warranted for one year from date of
purchase by Audio-Technica U.S., Inc. (A.T.U.S.) to be free of defects in materials and workmanship. In event
of such defect, product will be repaired promptly without charge or, at our option, replaced with a new product
of equal or superior value if delivered to A.T.U.S. or an Authorized Service Center, prepaid, together with the
sales slip or other proof of purchase date.
Prior approval from A.T.U.S. is required for return.
This warranty
excludes defects due to normal wear, abuse, shipping damage, or failure to use product in accordance with
instructions. This warranty is void in the event of unauthorized repair or modification.
For return approval and shipping information,
contact the Service Department, Audio-Technica U.S., Inc.,
1221 Commerce Drive, Stow, Ohio 44224.
Except to the extent precluded by applicable state law,
A.T.U.S. will have no liability for any consequential,
incidental, or special damages; any warranty of merchantability or fitness for particular purpose
expires when this warranty expires.
This warranty gives you specific legal rights, and you may have other rights which vary from state to state.
Outside the U.S.A., please contact your local dealer for warranty details.
Form No. 0309-9200-02-B/W P50880
© 1996 Audio-Technica U.S., Inc. Printed in U.S.A.
Element Fixed-charge back plate
permanently polarized condenser
Polar Pattern AT845R Omnidirectional
AT847R Unidirectional (Cardioid in hemisphere
above mounting surface)
Frequency Response 30-20,000 Hz
Open Circuit Sensitivity –42 dB (7.9 mV) re 1V at 1 Pa*
Impedance 200 ohms
Maximum Input Sound Level 142 dB SPL, 1 kHz at 1% T.H.D.
Dynamic Range (Typical)
AT845R 112 dB, 1 kHz at Max SPL
AT847R 113 dB, 1 kHz at Max SPL
Signal-to-noise Ratio
1
AT845R 64 dB, 1 kHz at 1 Pa*
AT847R 65 dB, 1 kHz at 1 Pa*
Phantom Power Requirements 9-52V DC, 2 mA typical
Weight AT845R 2.1 oz (60 grams)
AT847R 2.2 oz (62 grams)
Dimensions AT845R 1.10" (28.0 mm) dia, 2.72" (69.0 mm) length
AT847R 1.18" (30.0 mm) dia, 2.72" (69.0 mm) length
Output Connector Integral 3-pin XLRM-type
Accessory Furnished One pair isolators
† 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.
AT845R, AT847R Specifications
†
1 kHz
5 kHz
8 kHz
LEGEND
SCALE IS 5 DECIBELS PER DIVISION
90
60
120
30
150
210
240
270
300
330
180
0
100 Hz
1 kHz
5 kHz
8 kHz
LEGEND
SCALE IS 5 DECIBELS PER DIVISION
90
60
120
30
150
210
240
270
300
330
180
0
AT847R Polar Pattern
AT847R Dimensions
AT845R Polar Pattern
AT845R/RW
AT847R/RW
FRONT OF MIC
LOGO DESIGNATES
1.02"
26.0 mm
30.0 mm
1.18"
ISOLATORS
TABLE
NUT
2.72"
69.0 mm
0.33"
8.5 mm
0.79"
20.0 mm
ISOLATORS
NUT
2.72"
69.0 mm
0.33"
8.5 mm
0.79"
20.0 mm
1.10"
28.0 mm
CEILING
AT845R Dimensions