Audio-Technica condenser boundary microphones AT845R/RW AT847R/RW, AT845R, AT847R Specifications†

AT845R, AT847R Specifications†

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 Ratio1
	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/cm2 = 10 microbars = 94 dB SPL
		1 Typical, A-weighted, using Audio Precision System One.

AT845R Dimensions AT847R Dimensions

AT845R/RW

AT847R/RW

AT845R Polar Pattern

	0
330	30
300	60
270	90
240	120
210	150

180

SCALE IS 5 DECIBELS PER DIVISION

LEGEND

1 kHz

5 kHz

8 kHz

AT847R Polar Pattern

	0
330	30
300	60

0.79"

20.0 mm1.18"

30.0 mm

NUT

2.72"	ISOLATORS	TABLE
69.0 mm

CEILINGISOLATORS 1.10"

28.0 mm

0.33"

8.5 mm

1.02"

26.0 mm

0.79"

20.0 mm

LOGO DESIGNATES

FRONT OF MIC

0.33"

8.5 mm

2.72"

69.0mm

NUT

270	90
240	120
210	150
	180

SCALE IS 5 DECIBELS PER DIVISION

LEGEND

100 Hz

1 kHz

5 kHz

8 kHz

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.

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

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

Form No. 0309-9200-02-B/W P50880

© 1996 Audio-Technica U.S., Inc. Printed in U.S.A.