Shure BETA 98/S User manual

MODEL BETA 98/S
SUPERCARDIOID CONDENSER MICROPHONE
GENERAL
The Shure BETA 98/S is a compact, high-output, supercar-
dioid condenser microphone for professional sound reinforce-
ment and studio recording. Its extremely uniform supercar-
dioid pickup pattern provides high gain before feedback and
excellent rejection of unwanted noise. Its high maximum
sound pressure level (SPL) makes it useful for a variety of
acoustic instruments, including drums, percussion, piano,
reed, wind, and string instruments. The BETA 98/S can also
be used for amplified guitars.
The BETA 98/S includes either a shockmount swivel
adapter (BETA 98/S) or the A98D drum mount (BETA 98D/S).
The A98D drum mount has a specially designed gooseneck
that allows the microphone to be positioned freely, yet holds
it securely in place once the ideal placement has been found.
The BETA 98/S is supplied with a windscreen, storage bag,
preamplifier, and an interconnect cable. The preamplifier can
be powered by any 48 Vdc phantom power supply.
FEATURES
•Tailored frequency response for studio quality performance
•Wide dynamic range for use in high SPL environments
•Uniform supercardioid pattern for high gain before feed-
back and superior rejection of off-axis sound
•Optional A98D drum mount is unobtrusive and versatile—
allows precise positioning of the microphone while holding it
firmly in place
•Compact design reduces stage clutter
•Detachable cable for easy storage
•Interchangeable microphone cartridges with different polar
patterns are available
•Legendary Shure quality, ruggedness, and reliability
MODEL VARIATIONS
BETA 98D/S includes microphone, 4.6 m (15 ft) heavy-duty
interconnect cable, preamplifier, and A98D microphone drum
mount.
BETA 98/S includes microphone, 7.6 m (25 ft) light-weight
interconnect cable, preamplifier, and shockmount swivel
adapter.
GENERAL RULES FOR MICROPHONE USE
1. Aim the microphone toward the desired sound source and
away from unwanted sources. This may not be obvious or in-
tuitive, since supercardioid microphones such as the BETA
98/S can pick up sounds from the rear.
2. Place the microphone as close as practical to the desired
sound source (refer to the table below).
3. Work close to the microphone for extra bass response.
4. Use only one microphone to pick up a single sound source.
5. Use the fewest number of microphones as practical.
6. Keep multiple microphones separated by a distance equal
to at least 3times the distance to the nearest sound source.
7. Place mics as far as possible from reflective surfaces.
8. Use a windscreen when using the microphone outdoors.
APPLICATIONS AND PLACEMENT
The most common BETA 98/S applications and placement
techniques are listed in the following table. Keep in mind that
microphone technique is largely a matter of personal taste;
there is no one “correct” microphone position.
APPLICATION SUGGESTED MICROPHONE
PLACEMENT TONE QUALITY
Tom-Toms Using the A98D drum mount,
place one on each tom, or between
each pair of toms, 1 to 3 in. (2.5 to
7.6 cm) above drum heads. Aim
each mic at top drum heads.
On double head toms, remove bot-
tom head and place mic inside
pointing up toward top drum head.
Medium attack;
full, balanced
sound.
Medium attack;
full, balanced
sound.
Snare Drum 1 to 3 in. (2.5 to 7.5 cm) above rim
of top head of drum. Aim mic at
drum head.
If desired, place a second mic just
below rim of bottom head.
More “snap”
from drumstick.
More “snare”
sound.
Hi-Hat
Cymbals Using the A98D drum mount, place the mic close to the cymbal,
but far enough away that it doesn’t
touch it when cymbal is struck.
Bright,
with plenty of
attack.
Reed
Instruments Place microphone a few inches from and aiming into bell. Bright, mini- mizes feedback
and leakage.
Guitar
Amplifier Place microphone 4 inches from grille at center of speaker cone. Natural, well-balanced.
NOTE: Before each use, make sure the cartridge is tightly se-
cured on the microphone, as vibration and accidental hits with
drumsticks may loosen it, resulting in signal loss.
INTERCONNECTING CABLE
The supplied cable connects the BETA 98/S to the preampli-
fier. If necessary, up to 23 m (75 ft) of cable can be used be-
tween the microphone and preamplifier without signal loss.
USING THE SHOCKMOUNT SWIVEL ADAPTER
Use the following procedures to mount the Beta 98/S on the
swivel adapter (see Figure 1):
1. Connect the microphone to the connector.
Model Beta 98/S User Guide
27D3108 (Rev. 5)
2005, Shure Incorporated Printed in U.S.A.

2
2. Thread the cable through the C-clamp and slide the con-
nector into the C-clamp until snug.
3. To reduce wear on the cable, snap it into the stress reliever
clip leaving a couple of inches slack on the connector side.
BETA 98/S MOUNTED ON SWIVEL ADAPTER
FIGURE 1
SPECIFICATIONS
Type
Condenser (electret bias)
Frequency Response
20 to 20,000 Hz
(measured at 304.8 mm [1 ft] from a spherical sound
source, free field conditions)
TYPICAL FREQUENCY RESPONSE
FIGURE 2
Polar Pattern
Supercardioid (as supplied), uniform with frequency, sym-
metrical about axis. Cartridge for cardioid polar pattern also
available.
125 Hz
250 Hz
500, 1000 Hz
2500, 5000 Hz
6300, 10000 Hz
15000 Hz
TYPICAL POLAR PATTERN
FIGURE 3
Output Level (at 1,000 Hz)
Open Circuit Voltage: –59 dBV/Pa* (1 mV) typical
*1 Pa = 94 dB SPL
Maximum SPL
(20 Hz to 20 kHz, less than 1% THD)
2.5 kΩload 160 dB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 kΩload 156 dB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preamplifier Output Clipping Level
(20 Hz to 20 kHz, less than 1% THD)
2.5 kΩload + 6 dBV (2.0 V). . . . . . . . . . . . . . . . . . . . . . . .
1 kΩload + 2 dBV (1.26 V). . . . . . . . . . . . . . . . . . . . . . . .
Dynamic Range
(at 20 Hz to 20 kHz, less than 1% THD, 2.5 kΩload)
125 dB (max SPL minus A-weighted noise)
Output Noise
35 dB SPL, A-weighted
Signal-to-Noise Ratio
59 dB re 94 dB SPL
Output Impedance
Rated at 150 Ω(actual)
Recommended minimum load impedance: 1 kΩ
Hum Pickup
–7.5 dB equivalent SPL in 1 mOe field (60Hz)
Polarity
Positive pressure on diaphragm produces positive voltage
on pin 2 with respect to pin 3
Phantom Power
48 Vdc ±4 Vdc(IEC-268-15/DIN 45 596),
positive pins 2 and 3.
Cable
BETA 98/S: 7.6 m (25 ft) light-weight, two-conductor
shielded, TA4F to TA3F mini connectors.
BETA 98D/S: 4.6 m (15 ft) heavy-duty, two-conductor
shielded, TA4F to TA3F mini connectors.
Case
Microphone: Matte black enamel brass case and stainless
steel inner grille
Preamplifier: Matte black enamel finished steel
Dimensions
Microphone: 11.7 mm X 35.6 mm (0.46 in. X 1.40 in.)
Preamplifier: 20 mm X 99 mm (0.79 in. X 3.89 in.)
Net Weight
Microphone: 12 g (0.4 oz) less cable
Preamplifier: 96 g (3.4 oz)
Certification
Eligible to bear CE Marking. Conforms to European EMC
Directive 89/336/EEC. Meets applicable tests and perfor-
mance criteria in European Standard EN55103 (1996)
parts 1 and 2, for residential (E1) and light industrial (E2)
environments.
FURNISHED ACCESSORIES
Storage Bag 26B21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preamplifier RPM626. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gooseneck Drum Mount (BETA 98D/S) A98D. . . . . . . . . . . .
Shock-Mount Swivel Adapter (BETA 98/S) RK282. . . . . . . .
4.6 m (15 ft) heavy-duty cable (BETA 98D/S) C98D. . . . . . .
7.6 m (25 ft) light-weight cable (BETA 98/S) 90A4697. . . . .
ADDITIONAL ACCESSORIES
Cardioid cartridge RPM108. . . . . . . . . . . . . . . . . . . . . . . . . . .
Metal Locking Windscreen A412MWS. . . . . . . . . . . . . . . . . .
1.47 m (5 ft) light-weight cable 90A4039. . . . . . . . . . . . . . . .
REPLACEMENT PARTS
Windscreen (4 per package) RK183WS. . . . . . . . . . . . . . . . .
Supercardioid cartridge RPM110. . . . . . . . . . . . . . . . . . . . . . .
Gooseneck Assembly (A98D) RPM616. . . . . . . . . . . . . . . . .
Clamp Assembly (A98D) RPM618. . . . . . . . . . . . . . . . . . . . .
Case Assembly with Interface Board RPM624. . . . . . . . . . .

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