Power Requirements; Optional Accessories - Shure BETA 98AMP Manual Del Usuario

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
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
@ 1 kHz, 1% THD
Self Noise
equivalent SPL, A-weighted, typical
Common Mode Rejection
10 to 100,000 kHz
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.
4 4 4 4 4 4 4 4 4
Electret Condenser
Cardioid
20 to 20,000 Hz
150 Ω
–50.5 dBV/Pa (2.5 mV)
[1]
2500 Ω load: 157.5 dB SPL
1000 Ω load: 153.0 dB SPL
63 dB
2500 Ω load: 126.5 dB
1000 Ω load: 122.0 dB
2500 Ω load: 12.5 dBV
1000 Ω load: 7.5 dBV
31.0 dB SPL-A
≥60 dB
Positive pressure on diaphragm produces positive
voltage on pin 2 with respect to pin 3
11–52 V DC phantom power (IEC-61938), 5.5 mA
[4]
130 g (4.6 oz.)
Accessories and Parts
Furnished Accessories
Universal Microphone Mount
A75M Small Mic Clip
Zippered Carrying Bag
Snap-fit Windscreen

Optional Accessories

Snap-Fit Windscreen (4 per package)
Mic Clip
Metal Locking Windscreen
7.6 m (25 ft.) Cable
A75M Large Mic Clip
A75M Universal Microphone Adapter
Replacement Parts
Cardioid Cartridge
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
Note:
Information in this guide is subject to change without notice. For the additional
information about this product, please visit www.shure.com.
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