Shure BETA 98A - Manual (Page 4)

4
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.
Accessories and Parts
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: [email protected]
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.
Furnished Accessories
Metal Locking Windscreen A412MWS
Universal Microphone Mount A75M
Optional Accessories
Cartridge Type Electret Condenser
Polar Pattern Cardioid
Frequency Response 20 to 20,000 Hz
Output Impedance
@ 1 kHz
179 Ω
Sensitivity
open circuit voltage, @ 1 kHz, typical
–48.0 dBV/Pa [1] (4.0 mV)
Maximum SPL
1 kHz at 1% THD [2]
2500 Ω load 150.5 dB
1000 Ω load 144.0 dB
Signal-to-Noise Ratio [3] 64 dB
Dynamic Range
@ 1 kHz
2500 Ω load 120.5 dB
1000 Ω load 114.0 dB
Clipping Level
20 Hz to 20 kHz, 1% THD
2500 Ω load 8.0 dBV
1000 Ω load 1.0 dBV
Self Noise
equivalent SPL, A-weighted, typical
30.0 dB SPL-A
Connector Three-pin professional audio (XLR), male, balanced
Polarity Positive pressure on diaphragm produces positive
voltage on pin 2 with respect to pin 3
Power Requirements 11–52 V DC [4] phantom power (IEC-61938), 3.6 mA
Net Weight 12 g (0.6 oz.)
[1] 1 Pa=94 dB SPL
[2] THD of microphone preamplifier when applied input signal level is equivalent to cartridge output
at specified SPL
[3] S/N ratio is the difference between 94 dB SPL and equivalent SPL of self noise, A-weighted
[4] All specifications measured with a 48 Vdc phantom power supply. The microphone operates at
lower voltages, but with slightly decreased headroom and sensitivity.
SPECIFICATIONS
Zippered Carrying Bag 95A2314
In-Line Preamplifier (1 piece) RPM626
Snap-fit Windscreen 95A2064
Shock-Mount Swivel Adapter (BETA 98A/C) RK282
7.6 m (25 ft.) light-weight cable (BETA 98A/C) 95A2398
Beta 98 Drum Mount (BETA 98AD/C) A98D
4.6 m (15 ft.) Heavy-Duty Cable (BETA 98AD/C) C98D
Replacement Parts
Cardioid Cartridge RPM98A/C
98A Replacement Housing RPM98A-HT
Clamp Assembly (A98D) RPM618
Snap-Fit Windscreen (4 per package) RK183WS
Wiring Diagram
1 2
3
2
3
1
1 =
3 =
2 =
3 =
2 =
1 = 1
2
3 4
FI
FET
G
D
S 1
2
3
4
TA4F TA4M
Cartridge
Cable
Bias
to source
Ground
Bias
to source
Ground
Preamplifier