Audio-Technica MICROLINE AT915AMRX/ML - Manual (Page 2)

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. 0309-9503-00-B/W P50883
© 1996 Audio-Technica U.S., Inc. Printed in U.S.A.
Audio -Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224
Audio -Technica Limited, Old Lane, Leeds LS11 8AG England
Element Fixed-charge back plate
permanently polarized condenser
Polar Pattern MicroLine 
Frequency Response 30-20,000 Hz
Low-frequency Roll-off 150 Hz, 6 dB/octave
Open Circuit Sensitivity – 36 dB (15.8 mV) re 1V at 1 Pa*
Impedance 200 ohms (1000 ohms without power module)
Maximum Input Sound Level 131 dB SPL, 1 kHz at 1% T.H.D.
Dynamic Range (Typical) 105 dB, 1 kHz at Max SPL
Signal-to-noise Ratio 1 68 dB, 1 kHz at 1 Pa*
Switch Flat response, low-roll-off (recessed)
Phantom Power Requirements 9-52V DC, 2 mA typical
Weight
Microphone (less cable) 3.9 oz (110 grams)
Power Module 2.1 oz (60 grams)
Dimensions
Microphone 20.28" (515.0 mm) to 22.83" (580.0 mm) long,
0.31" (8.0 mm) head diameter
Power Module 3.58" (91.0 mm) long, 0.83" (21.0 mm) diameter
Output Connector (Power Module) Integral 3-pin XLRM-type
Cable 9.8' (3.0 m) long (permanently attached to microphone),
0.10" (2.6 mm) diameter, 2-conductor, shielded cable;
free end attaches to screw terminals in power module
Accessories Furnished AT8138 MicroLine foam windscreen; AT8533x power
module; AT8425
5 / 8 "-27 threaded mounting stud
Optional Interchangeable AT853C-ELE cardioid (120 ° )
Elements 2 AT853H-ELE hypercardioid (100 ° )
AT853O-ELE omnidirectional (360 ° )
AT853SC-ELE subcardioid (170 ° )
† 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.
2 These elements require a P10929 element adapter.
AT915AMRx/ML Specifications †
Architects and Engineers Specifications
The microphone shall be a fixed-charge condenser with a MicroLine  polar pattern and a
frequency response of 30 Hz to 20,000 Hz. It shall be capable of accepting optional interchangeable
elements for additional polar patterns. It shall operate from an external 9V to 52V DC phantom
power source. Nominal open-circuit output voltage with the included power module shall be
15.8 mV at 1 kHz, 1 Pascal. Output shall be low impedance balanced (200 ohms).
The microphone shall have a permanently-attached 9.8' (3.0 m) miniature cable with a
pigtail output. The pigtail output shall connect to a power module via internal solderless screw
terminals. The power module shall include a switch for low-frequency roll-off and shall terminate
in a 3-pin XLRM-type output connector.
The microphone shall be a small-diameter alternating gooseneck design, with an overall
length from 20.28" (515.0 mm) to 22.83" (580.0 mm). Head diameter shall be 0.31" (8.0 mm).
The microphone shall include a
5 /
8
"-27 threaded flange to mate with the threads of a standard
microphone desk or floor stand. A 5 /
8
"-27 threaded stud shall be provided for permanent
installation to a mounting surface. The microphone weight shall be 3.9 oz (110 grams) without
cable. Finish shall be low-reflectance black.
The Audio -Technica AT915AMRx/ML is specified.
Polar Pattern
200 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
AT915AMRx /ML
Dimensions
21.0 mm
0.83"
91.0 mm
2.6 mm
0.10"
3.58"
30.0 mm
1.18"
8.0 mm
0.31"
580.0 mm
22.83"
20.28"
515.0 mm
TO
131.5 mm
5.18"