Load Impedance; Power Requirements; Specifications; Furnished Accessories - Shure BETA 98A User Manual

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
Email: EMEAsupport@shure.de
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