Models Beta 98H/C and
WB98H/C User Guide
Condenser Instrument
Microphone
2005, Shure Incorporated
Printed in U.S.A.
27E3102 (Rev. 5)
ENGLISH
FEATURES
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Tailored frequency response for open, natural sound reproduction
Adjustable gooseneck and ratcheting swivel joint allow for optimal microphone positioning
Gooseneck angle brace retains microphone placement in more active performances
Compact, lightweight construction provides a low degree of visibility
Designed for use in high SPL environments
Uniform cardioid pattern provides for high gain-before-feedback and excellent rejection of ambient sound
Interchangeable microphone cartridges with different pick-up patterns are available
Legendary Shure quality, ruggedness and reliability
MODEL VARIATIONS
BETA 98H/C includes microphone, 3 m (10 ft.) high-flex cable with attached preamplifier, two snap-on windscreens, a
gooseneck angle brace and a cable management device.
WB98H/C includes microphone, 1.6 m (5.3 ft.) high-flex cable terminated to mini-connector (TA4F) for wireless
applications, two snap-on windscreens, a gooseneck angle brace and a cable management device.
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APPLICATIONS AND PLACEMENT
The most common BETA 98H/C applications and placement techniques are described below. Keep in mind that micro-
phone technique is largely a matter of personal taste; there is no one “correct” microphone position.
SAXOPHONE (see Figure 4): Clamp the microphone onto the bell of the saxophone, so the microphone is a few inches
from and facing into the bell. This will produce a bright tonal balance while minimizing feedback and leakage.
SOPRANO SAXOPHONE (see Figure 5): Clamp the microphone onto the bell of the saxophone and adjust the gooseneck
so the microphone is facing the keys of the instrument, a few inches from the lower keys. This will produce a warm and
full tonal balance. For a brighter tone, adjust the gooseneck so the microphone is facing into the bell, a few inches away.
TROMBONE PLACEMENT (see Figure 6): Clamp the microphone onto the bell of the trombone and adjust the goose-
neck so the microphone is facing directly into the bell, a few inches away. This will produce a bright tonal balance while
providing maximum isolation.
TRUMPET PLACEMENT (see Figure 7): Clamp the microphone onto the bell of the trumpet and adjust the gooseneck
so the microphone is facing directly into the bell, a few inches away. This will produce a bright tonal balance while provid-
ing maximum isolation.
DRUM PLACEMENT (see Figure 8): Clamp the microphone onto the drum rim and adjust the gooseneck so the micro-
phone is aiming a few inches above the drum head and an inch from the rim. This provides a full tonal balance.
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SPECIFICATIONS
WB98H/C Microphone (with standard test cir- BETA 98H/C Microphone (with preamplifier)
cuit shown in Figure 1)
Type
Condenser (electret bias)
Unidirectional (cardioid). See Figure 2.
20 to 20,000 Hz. See Figure 3.
Polar Pattern
Frequency Response
Output Impedance
1200 W
Rated at 150.0 W (actual)
Recommended minimum load
impedance: 1 kW
May be used with loads as low as 150 W with re-
duced clipping level)
Output Level
Open Circuit Voltage: –56.5 dB (1.5 mV)
-9 dBV (0.35 V)
Open Circuit Voltage: -56 dB (1.6 mV)
(0 dB = 1 volt per Pascal)
Output Clipping Level
(at 1kHz, THD < 1%)
2.5 kW load . . . . . . . . . . . . . . . . 11 dBV (3.5 V)
1.0 kW load . . . . . . . . . . . . . . . . . 3 dBV (1.4 V)
Maximum SPL
143.5 dB
2.5 kW load . . . . . . . . . . . . . . . . . . . . . . . 163 dB
1.0 kW load . . . . . . . . . . . . . . . . . . . . . . . 155 dB
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SPECIFICATIONS
WB98H/C Microphone (with standard test cir- BETA 98H/C Microphone (with preamplifier)
cuit shown in Figure 1)
Dynamic Range (maximum SPL to 112.5 dB
A-weighted noise level)
132 dB (2.5 kW load)
Output Noise (equivalent SPL)
Signal-to-noise ratio
31 dB typical, A-weighted
63 dB at 94 dB SPL (IEC 651)
Polarity
Positive pressure on microphone diaphragm Positive pressure on microphone diaphragm
produces positive voltage on pins 3 and 4 with produces positive voltage on pin 2 relative to
respect to pin 1 (ground).
pin 3 of preamplifier output connector.
Recommended Operating Voltage
Environmental Conditions
5 V (pin 2 to pins 3 and 4)
11 to 52 Vdc Phantom
Operating temperatures: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –7° C to 49° C (20° F to 120° F)
Storage temperatures: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –29° C to +74° C (–20° F to 165° F)
Relative Humidity: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 95%
Net Weight
Microphone w/cable and mini-connector Microphone w/cable and preamplifier:
(TA4F): 65 g (2.3 oz.)
156 g (5.5 oz.)
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1,0 mF
V sortie
100 K
3
4
20 K
1
2
5 V
+
–
STANDARD TEST CIRCUIT
TYPICAL POLAR PATTERN
FIGURE 2
FIGURE 1
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61 cm (2 pi)
1 cm (0,4 po)
TYPICAL FREQUENCY RESPONSE
FIGURE 3
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CERTIFICATION
The Beta 98H/C conforms to European EMC Directive 89/336/EEC, and is elibible to bear the CE marking. Meets
applicable tests and performance criteria in European standard EN 55103 (1996), parts 1 and 2, for residential (E1)
and light industrial (E2) environments.
The WB98H/C comforms to European EMC Directive 89/33/EEC, and is eligible to bear the CE marking. Meets
Requirements of EMC Standard EN 301 489 Parts 1 and 9.
REPLACEMENT PARTS
Preamplifier Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RPM440
Clamp and gooseneck assembly (less cartridge, windscreen),
with 3 m (10 ft.) stripped and tinned cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RPM540
Windscreen (4 per package) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RK183WS
Cardioid cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RPM108
Supercardioid cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RPM110
Cable Management Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CMD–1
Battery Powered Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . MX1–BP
Cable connector (for WB98H/C only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WA330
Gooseneck Angle Brace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65A1963
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SAXOPHONE PLACEMENT
SOPRANO SAXOPHONE PLACEMENT
FIGURE 4
FIGURE 5
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TROMBONE PLACEMENT
TRUMPET PLACEMENT
FIGURE 6
FIGURE 7
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GOOSENECK ANGLE BRACE
DRUM PLACEMENT
FIGURE 8
FIGURE 9
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MODEL BETA 98H/C
CARTRIDGE
XLR CONNECTOR
FET
MIC
ELEMENT
D
G
BLACK (to source) (audio)
RED (to drain) (DC bias)
SHIELD
RC
FILTER
1
2
2
3
1
S
PREAMP
3
MODEL WB98H/C
CARTRIDGE
TA4F CONNECTOR
FET
D
RED (to drain) (DC bias)
BLACK (to source) (audio)
2
G
RC
FILTER
4
1
3
MIC
ELEMENT
S
SHIELD
FIGURE 10. WIRING DIAGRAMS
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 Intl 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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