Shure miniature condesor microphone - Manual

1

MODEL WM98 AND SM98A MINIATURE CONDENSER MICROPHONES

MICROPHONE

POLAR
MODIFIER

SWIVEL
ADAPTER

PREAMPLIFIER

GENERAL

Shure Models WM98 and SM98A are miniature electret con-

denser microphones with a unidirectional (cardioid) pickup pat-
tern. A smooth wide frequency response from 40 to 20,000 Hz
makes the microphones well suited for musical instrument pick-
up. The WM98 is for wireless use; the SM98A is for wired applica-
tions. Both models feature the 98 microphone element.

The cardioid polar response of the 98 discriminates against

sounds coming from the rear, permitting higher gain before feed-
back in sound reinforcement applications. With its true cardioid
pattern extending to 20,000 Hz, the microphone can often be
used for pickup of a particular instrument in an ensemble or or-
chestra.

When still stronger rejection of off-axis pickup is required, the

A98SPM Supercardioid Polar Modifier should be used. This de-
vice changes the pickup pattern from cardioid to supercardioid
with minimal change of on-axis microphone frequency response.
With the A98SPM, the 98 becomes the smallest multi-pattern mi-
crophone available, eliminating the need for costly multiple cap-
sules. The A98SPM is supplied with the SM98A.

A very high maximum sound pressure level allows use of the

98 with all acoustic instruments including drum kits and other per-
cussion as well as brass, reed, wind, string, and keyboard instru-
ments. The 98 can also be used with amplified guitars and key-
boards.

The WM98 can be connected directly to a Shure wireless trans-

mitter using the supplied cable; other transmitters must be
checked for proper pin configuration, condenser microphone
power supply, and connector type.

TYPICAL FREQUENCY RESPONSE

FIGURE FIGURE 3

The WM98 is supplied with a versatile shock–mount swivel

adapter for mounting on a standard 5/8”–27 thread, a 1.47 m (5
ft) cable with miniature 3– and 4–pin connectors (Switchcraft TA3
and TA4 types), and an acoustic foam windscreen to minimize
wind noise in outdoor applications and from air–moving equip-
ment.

The Shure ILP-1, low-distortion high-clipping-level, phantom–

powered preamplifier, is furnished with the SM98A microphone.
Additional included accessories are: a windscreen for use with
the microphone alone, and a windscreen for use with the
A98SPM, a shock-mount swivel adapter and a detachable 4.6 m
(15 ft) cable with Switchcraft “Tini Q–G” connectors.

The ILP-1 preamplifier provides switchable gain of 0 or +10 dB

and switch-selectable Flat or Low-Cut response to suit pickup for
various instruments. The Low-Cut position is also useful to filter
out low-frequency noise from such sources as wind noise or air
conditioner or heater fans. The ILP-1 can be powered by any 11–
to 52–volt dc phantom supply from sound reinforcement, record-
ing, or broadcast equipment.

Optional accessories, designed exclusively for use with the

WM98 and SM98A, are available. These include the following:

•

A98MK Drum Kit, with gooseneck holder and clamp for
mounting the microphone directly on most drums.

•

A98KCS Horn Mount, a shock-mounted clamp designed es-
pecially for securely mounting the 98 on a horn, wind, or reed
instrument.

Microphone Features:

•

Smooth, wide frequency response for accurate sound repro-
duction across the entire audio spectrum

•

Symmetrical cardioid pattern, uniform with frequency to 20
kHz

•

Very high sound pressure level capability

•

Very low distortion and high output clipping level

•

Low susceptibility to RFI, electrostatic and electromagnetic
hum

•

Smallest multi-pattern microphone available – without the
need for multiple capsules

•

Rugged construction for outstanding reliability

•

Cable detachable at both microphone and transmitter
(WM98) or preamplifier (SM98A)

•

Usable over very wide range of temperature and humidity

•

Supplied with unique shock-mount swivel adapter for mount-
ing on conventional microphone stands or goosenecks

•

Optional accessories to increase microphone versatility

TYPICAL FREQUENCY RESPONSE – SM98A WITH

A98SPM POLAR MODIFIER INSTALLED

FIGURE FIGURE 4

27A2738 (RI)

E

1998, Shure Brothers Incorporated

Printed in U.S.A.

Shure Brothers Incorporated
222 Hartrey Avenue
Evanston IL 60202-3696 U.S.A.

Model WM98 and SM98A User’s Guide