Model Beta 98A Wired Microphones
Specification Sheet
TL1074 (Rev. 1)
Printed in U.S.A.
©2010 Shure Incorporated
BETA 98A Instrument Microphone
General Description
The Shure Beta 98A is a compact, high-output,
condenser microphone for professional sound
reinforcement and studio recording. An ex-
tremely uniform cardioid polar pattern provides
excellent gain before feedback and off-axis
rejection of unwanted noise. Its high sound
pressure level (SPL) capability makes it useful
for a variety of acoustic or amplified instruments
including drums, piano, reed, wind, and strings.
Variations
•
Beta 98A/C
includes microphone, 7.6 m
(25 ft) light-weight interconnect cable,
preamplifier, and RK282 shockmount swivel
adapter.
•
Beta 98AD/C
includes microphone, 4.6 m
(15 ft) heavy-duty interconnect cable,
preamplifier, and A98D microphone drum
mount.
Performance Characteristics
•
Exceptional low-frequency reproduction
•
Extremely high SPL handling
•
High output level
•
No crossover distortion
Features
•
Premier live performance microphone with
Shure quality, ruggedness, and reliability
•
Uniform cardioid pick-up pattern for maximum
gain before feedback and superior rejection of
off-axis sound
•
Tailored frequency response specifically
shaped for drums, percussion, reeds, and
horns
•
Compact design reduces stage clutter
•
Wide dynamic range for use in high SPL
environments
•
Optional A98D mount is unobtrusive,
versatile, and easy to adjust
•
Enamel-coated metal construction and
stainless steel inner grille resist wear and
abuse
Interconnecting Cable
The supplied cable connects the BETA 98A to
the preamplifier. If necessary, up to 23 m (75 ft)
of cable can be used between the microphone
and preamplifier without signal loss.
Shockmount Swivel Adapter
Use the following procedures to mount the Beta
98A on the swivel adapter:
1. Connect the microphone to the adapter.
2. Thread the cable through the C-clamp and
slide the connector into the C-clamp until
snug.
3. To reduce wear on the cable, snap it into the
stress reliever clip leaving 5 to 7 cm (2 to 3
inches) of slack on the connector side.
BETA 98A MOUNTED WITH
SWIVEL ADAPTER
BETA 98A MOUNTED WITH A98D
A98D Drum Mount
The Shure A98D mounts the Beta 98A on a
drum or cymbal stand. Reference the furnished
A98D guide to correctly mount the microphone.
Applications and Placement
General Rules for Use
•
Aim the microphone toward the desired sound source; angle unwanted sounds toward its
null
point.
•
Use the fewest amount of microphones as practical to increase the
Potential Acoustic Gain
and
prevent feedback.
•
Follow the
3 to 1 Rule
by spacing each microphone by at least three times the distance to its
source to reduce
Phase Cancellation
.
•
Place microphones as far as possible from reflective surfaces to reduce
Comb Filtering
.
•
When using directional microphones, work closely to the microphone for extra bass response to
take advantage of
Proximity Effect
.
•
Avoid excessive handling to minimize pickup of mechanical noise and vibration.
•
Do not cover any part of the microphone grille, as this will adversely affect microphone
performance.
•
Add a windscreen when using the microphone outdoors.
