Shure Incorporated
18/23
Operating Temperature
-18°C (0°F) to 57°C (135°F)
Polarity
Positive pressure on microphone diaphragm (or positive voltage applied to tip of WA302 phone plug) pro
duces positive voltage on pin 2 (with respect to pin 3 of lowimpedance output) and the tip of the high im
pedance 1/4-inch output.
BLX1
Audio Input Level
max
16 dBVmaximum
min (0 dB)
+10 dBVmaximum
Gain Adjustment Range
26 dB
Input Impedance
1 MΩ
RF Transmitter Output
10 mW, typical
Dimensions
4.33 in. X 2.52 in. X 0.83 in. (110 mm X 64 mm X 21 mm) H x W x D
Weight
2.6 oz. (75 g), without batteries
Housing
Molded ABS
Power Requirements
2 LR6 AA batteries, 1.5 V, alkaline
Battery Life
up to 14 hours (alkaline)
BLX2
Audio Input Level
0dB
20 dBVmaximum
-10dB
10 dBVmaximum
Gain Adjustment Range
10 dB