Power Requirements; Optional Accessories - Shure BETA 98A Instrucciones De Uso

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Load Impedance
Maximum SPL capability, output clipping level, and dynamic range vary with the input
load impedance of the preamplifier to which you connect the microphone. Shure recom-
mends a minimum input load impedance of 1000 Ω. Most modern microphone preampli-
fiers meet this requirement. Higher impedance results in better performance for these
specifications.

Power Requirements

This microphone requires phantom power and performs best with a 48 Vdc supply (IEC-
61938). However, it will operate with slightly decreased headroom and sensitivity with
supplies as low as 11 Vdc.
Most modern mixers provide phantom power. You must use a balanced microphone
cable: XLR-to-XLR or XLR-to-TRS.
SPECIFICATIONS
Cartridge Type
Polar Pattern
Frequency Response
Output Impedance
@ 1 kHz
Sensitivity
open circuit voltage, @ 1 kHz, typical
Maximum SPL
1 kHz at 1% THD
[2]
Signal-to-Noise Ratio
[3]
Dynamic Range
@ 1 kHz
Clipping Level
20 Hz to 20 kHz, 1% THD
Self Noise
equivalent SPL, A-weighted, typical
Connector
Polarity
Power Requirements
Net Weight
1 Pa=94 dB SPL
[1]
THD of microphone preamplifier when applied input signal level is equivalent to cartridge output
[2]
at specified SPL
S/N ratio is the difference between 94 dB SPL and equivalent SPL of self noise, A-weighted
[3]
All specifications measured with a 48 Vdc phantom power supply. The microphone operates at
[4]
lower voltages, but with slightly decreased headroom and sensitivity.
Cartridge
FET
D
G
FI
S
4
Electret Condenser
Cardioid
20 to 20,000 Hz
179 Ω
–48.0 dBV/Pa
(4.0 mV)
[1]
2500 Ω load
150.5 dB
1000 Ω load
144.0 dB
64 dB
2500 Ω load
120.5 dB
1000 Ω load
114.0 dB
2500 Ω load
8.0 dBV
1000 Ω load
1.0 dBV
30.0 dB SPL-A
Three-pin professional audio (XLR), male, balanced
Positive pressure on diaphragm produces positive
voltage on pin 2 with respect to pin 3
11–52 V DC
phantom power (IEC-61938), 3.6 mA
[4]
12 g (0.6 oz.)
Cable
Bias
2 =
3 =
to source
1 =
Ground
Accessories and Parts
Furnished Accessories
Zippered Carrying Bag
In-Line Preamplifier (1 piece)
Snap-fit Windscreen
Shock-Mount Swivel Adapter (BETA 98A/C)
7.6 m (25 ft.) light-weight cable (BETA 98A/C)
Beta 98 Drum Mount (BETA 98AD/C)
4.6 m (15 ft.) Heavy-Duty Cable (BETA 98AD/C)

Optional Accessories

Metal Locking Windscreen
Universal Microphone Mount
Replacement Parts
Cardioid Cartridge
98A Replacement Housing
Clamp Assembly (A98D)
Snap-Fit Windscreen (4 per package)
CERTIFICATION
Eligible to bear CE Marking. Conforms to European EMC Directive 2004/108/EC. Meets
Harmonized Standards EN55103-1:1996 and EN55103-2:1996, for residential (E1) and
light industrial (E2) environments.
The Declaration of Conformity can be obtained from:
Authorized European representative:
Shure Europe GmbH
Headquarters Europe, Middle East & Africa
Department: EMEA Approval
Wannenacker Str. 28
D-74078 Heilbronn, Germany
Phone: +49 7131 72 14 0
Fax: +49 7131 72 14 14
Wiring Diagram
TA4F
TA4M
2
2
2 =
4
3 =
4
3
3
1 =
1
1
Preamplifier
Bias
to source
Ground
95A2314
RPM626
95A2064
RK282
95A2398
A98D
C98D
A412MWS
A75M
RPM98A/C
RPM98A-HT
RPM618
RK183WS
1
2
2
3
3
1
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