Shure A27M Quick Start Manual page 3

The table below describes five popular stereo pickup sys-tems. It specifies microphone types, angles and spacing.
Those with coincident spacing have their diaphragms verti-cally in line. Closely spaced microphones have their
dia-phragms separated by the specified distance. These and other microphone systems are detailed in the book
"Stereo Microphone Techniques" by Bruce Bartlett (1991, Focal Press. ISBN 0-240-80076-1) and in "Microphone
Tech-niques for Music Studio Recording" (AL1265) available from Shure Incorporated.
Stereo Pickup Systems
X-Y
ORTF (French Broad-
casting Corporation)
NOS (Dutch Broadcast-
ing Foundation)
Blumlein Pair or stere-
osonic
MS (Mid-Side)
Full Two Year Warranty
Shure warrants this product to be free in normal use of any defects in workmanship and materials for two (2) years
from the date of purchase. If your Shure product fails within this period, call 1-800-516-2525 in the United States
for details on repair, replacement, or refund. In Europe, contact Shure Incorporated Europe GMBH at +49 (7262)
Microphone Types
2 Cardioid
2 Cardioid
2 Cardioid
2 Bidirectional
1 Cardioid
1 Bidirectional
Microphone Configurations
Axes of maximum re-
sponse at 135°; spacing:
coincident
Axes of maximum re-
sponse at 110°; spacing:
17 cm. (7 in.)
Axes of maximum re-
sponse at 90°; spacing:
30 cm. (12 in.)
Axes of maximum re-
sponse at 90°; spacing:
coincident
Cardioid and bidirectional
forward pointed; spacing:
coincident
Shure Incorporated
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