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SPECIFICATIONS
Frequency Response (Figure 4)
50 to 17,000 Hz
Polar Pattern (Figure 5)
Cardioid
Output Impedance (at 1 kHz)
Rated at 150 Ω (180 Ω actual)
Open Circuit Sensitivity
(at 1 kHz, ref. 1 V/Pascal*)
–45.7 dB (5.19 mV)
*1 Pascal = 94 dB SPL
Maximum SPL
(1 kHz at 1% THD, 1 kΩ load)
129 dB
Equivalent Output Noise
(A-weighted)
29 dB SPL
Signal to Noise Ratio
(referenced to 94 dB SPL)
65 dB
Dynamic Range (at 1 kΩ Load)
100 dB
Common Mode Rejection
45 dB minimum
Preamplifier Output Clipping Level (1
kHz at 1% THD, 1 kΩ load)
–12.0 dBV (0.25 V)
Polarity
Positive sound pressure on dia-
phragm produces positive voltage on
pin 2 relative to pin 3 of output
connector.
Power Requirements
11 to 52 Vdc phantom, 2.0 mA
Environmental Requirements
Operating Temperature Range: –18°
C to 57° C (0° F to 135° F)
Relative Humidity: 0 to 95%
Dimensions (Figure 1)
Certification
Eligible to bear CE Marking. Conforms to
European EMC Directive 89/336/EEC.
Meets applicable tests and performance
criteria in European Standard EN55103
(1996) parts 1 and 2, for residential (E1)
and light industrial (E2) environments.
NOTE: For technical data by fax, phone
1-800-488-3297 and follow the recorded
instructions or, on the internet, go to
www.shure.com
REPLACEMENT PARTS
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Flange Mount Kit RPM640. . . . . . . . .