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Load Impedance
Maximum SPL capability, output clipping level, and dynamic range vary with the in-
put load impedance of the preamplifier to which you connect the microphone. Shure
recommends a minimum input load impedance of 1000 Ω. Most modern microphone
preamplifiers 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
Common Mode Rejection
20 Hz to 200 kHz
Frequency Contour Switch
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.
4
Electret Condenser
Half-cardioid (cardioid in hemisphere above mount-
ing surface)
20 to 20,000 Hz
146 Ω
–48.5 dBV/Pa
(3.8 mV)
[1]
2500 Ω load
155 dB
1000 Ω load
151 dB
64.5 dB
2500 Ω load
125.5 dB
1000 Ω load
121.5 dB
2500 Ω load
12.5 dBV
1000 Ω load
7.5 dBV
29.5 dB SPL-A
≥55 dB
7 dB of attenuation centered at 400 kHz
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), 5.4 mA
[4]
470 g (16.6 oz.)
Accessories and Parts
Furnished Accessories
Zippered Carrying Bag
Optional Accessories
7.6 m (25 ft.) Cable
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
95A2314
C25E
RPM98A/C
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