Model SM89 User Guide
FEATURES
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Designed especially for location film and TV prodution,
theater sound reinforcement, and spot news coverage
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Highly directional polar pattern optimized for distant
pickup
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Smooth, wide on-axis response
Greatly suppressed side pickup with minimum comb-filter
effects
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Two low-cut frequencies, switch selectable
Low impedance, high sensitivity
Extremely low hum, noise, and RF pickup
Uses readily available 11 to 52 Vdc phantom supply
Rugged and reliable, operates over wide range of tem-
perature and humidity
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Extremely lightweight, can be suspended on fishpole for
long periods of time without operator fatigue
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Aircraft-grade materials used throughout
Supplied with foam windscreen and strong luggage-grade
carrying case
MODEL SM89
CONDENSER SHOTGUN MICROPHONE
SPECIFICATIONS
Model SM89 is a highly directional condenser shotgun microphone
with distant pickup characteristics suitable for on-location film
and television production. The SM89 can also be used for theater
sound reinforcement, spot news coverage, or wildlife recording.
The SM89 discriminates at a distance in favor of desired dialogue
or effects and against ambient noise–even in noisy surroundings.
Type
Pressure gradient/line combination
Transducer
Condenser
Frequency Response
The on-axis frequency response of the SM89 is very smooth
and extended. For clarity and speech intelligibility, a slight
presence rise optimizes the high-frequency response to
compensate for high-frequency losses. A low-frequency roll-
off minimizes pickup of wind, mechanical vibration, ambient
noise, and rumble without affecting voice frequencies.
60 to 20,000 Hz*
The off-axis response of the SM89 is virtually free of comb-
filter effects. This is important when it is not possible
to aim the microphone precisely or when it is desirable
to pick up dialogue or sound from moving sources.
*Curves shown at 1.8m (6 ft)
TYPICAL ON-AXIS FREQUENCY RESPONSE
27C2365 (Rev. 4)
©2006, Shure Incorporated
Printed in U.S.A.
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However, because the 30° off-axis response is smooth, simple
equalization can compensate for its decreased high frequencies
if necessary. The curve below shows the SM89 response at 30°
off-axis, with the equalization that can be used to restore the high-
frequency response.
ACCESSORIES
The supplied windscreen is useful under most indoor-conditions
where minimal wind noise due to boom motion, air conditioners, or
heater fans is present. When structure-borne mechanical vibration
must be cancelled, the optional Model A89SM Shock-Mount can
be used. And for mounting on a conventional microphone stand,
use the Shure A57F Swivel Adapter.
TYPICAL SM89 RESPONSE, 30 ° OFF-AXIS
Additionally, because of such off-axis characteristics, the SM89
can be used for pickup at greater angles off-axis than is possible
with other shotgun microphones. This feature permits deliberately
locating the desired source up to ±30° off-axis in order to ensure
that an undesired source is entirely off-axis and will not be picked
up. Changes in frequency response above 1,000 Hz can then be
compensated by simple equalization if necessary.
SM89 WITH WINDSCREEN, CARRYING CASE AND
SHOCK MOUNT ADAPTER
IMPORTANT: To avoid degrading the response of the SM89,
never cover its grille perforations with anything except acoustically
transparent windscreen material.
Pickup (and cancellation) is symmetrical about the microphone
axis; it is unchanged when the microphone is rotated about its own
axis. In addition to its acoustical and electrical properties, the SM89
is extremely lightweight. This makes it easier for an operator to hold
it on a fishpole for extended periods of time, for instance, during
lengthy takes. The microphone length is optimized in relation to
its directional characteristics and ease of handling. Its aircraft-
grade materials withstand rough handling, and its unique internal
construction provides excellent wind noise rejection while protecting
against damage to the transducer or electronics.
CERTIFICATION
Eligible to bear CE Marking. Conforms to European EMC
Directive 89/336/EEC. Meets applicable tests and performance
criteria in European Standard EN55103 (1996) parts 1 and 2, for
residential (E1) and light industrial (E2) environments.
FURNISHED ACCESSORIES
Carrying Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90A4684
Foam Windscreen . . . . . . . . . . . . . . . . . . . . . . . RK257WS
The SM89 is supplied with a foam windscreen for use when the
microphoneissubjecttoquickboommotion, orwhenairconditioning
or other indoor wind noises may be a problem. A rugged carrying
case is also supplied. An optional accessory is a specially designed
shock-mount virtually eliminating mechanical vibration pickup.
OPTIONAL ACCESSORIES
Shock Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A89SM
Swivel Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A57F
The SM89 is field serviceable. The handle separates by unscrewing
from the head; the interconnection is gold-plated and extremely
reliable.
REPLACEMENT PARTS
Head Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R144
Handle Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 90A3123
RFI Filter and Plug Element . . . . . . . . . . . . . . . . . 90A3127
For additional service or parts information, please contact Shure’s
Service department at 1-800-516-2525. Outside the United
States, please contact your authorized Shure Service Center.
3
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United States, Canada, Latin America, Caribbean:
5800 W. Touhy Avenue, Niles, IL 60714-4608, U.S.A.
Phone: 847-600-2000 U.S. Fax: 847-600-1212 Int’l Fax: 847-600-6446
Europe, Middle East, Africa:
Shure Europe GmbH, Phone: 49-7131-72140 Fax: 49-7131-721414
Asia, Pacific:
Shure Asia Limited, Phone: 852-2893-4290 Fax: 852-2893-4055
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