The Shure SM31FH is a water-resistant headset microphone for use with a wireless bodypack transmitter. It is ideal for fitness instructors and in situations where the microphone may be exposed to moisture.
45 Hz to 20,000 Hz
@ 1 kHz
@ 1 kHz
1000 Ω load, 1 kHz@ 3%THD
@ 1 kHz, 1000 Ω load
+5 V DC (nominal), 10 V maximum (DC bias)
Positive pressure on diaphragm produces positive voltage on pin 3 with respect to pin 1
1.1 m (45 in.)
60 g (2.11 oz.)
 Measurements taken using RPM626 preamp set @ 0 dB using 8k bias resistor.
*All specifications measured with a 48 Vdc phantom power supply. The microphone operates at lower voltages, but with slightly decreased headroom and sensitivity.
Note: Testing is based on the use of supplied and recommended cable types. The use of other than shielded (screened) cable types may degrade EMC performance.
The CE Declaration of Conformity can be obtained from: www.shure.com/europe/compliance
Authorized European representative:
Shure Europe GmbH
Headquarters Europe, Middle East & Africa
Department: EMEA Approval
75031 Eppingen, Germany
Phone: +49-7262-92 49 0
Fax: +49-7262-92 49 11 4