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BLX
BLX1
BLX2
AudioInputLevel
gain 0dB -20 dBV maximum
-10dB -10 dBV maximum
GainAdjustmentRange
10 dB
RFTransmitterOutput
10 mW, typical
varies by region
Dimensions
224 mm X 53 mm dia. (8 7/8 X 2 1/8 in.)
Weight
218 g (7.7 oz.) (without batteries)
Housing
Molded ABS
PowerRequirements
2 LR6 AA batteries, 1.5 V, alkaline
BatteryLife
up to 14 hours (alkaline)
WorkingRange
91 m (300 ft) Line of Sight
Note: Actual range depends on RF signal absorption, reflection and
interference.
AudioFrequencyResponse
50 to 15,000 Hz
Note: Dependent on microphone type
TotalHarmonicDistortion
Ref. ±33 kHz deviation with 1 kHz tone
0.5%, typical
DynamicRange
100 dB, A-weighted, typical
OperatingTemperature
-18°C (0°F) to 57°C (135°F)
Note: Battery characteristics may limit this range.
Polarity
Positive pressure on microphone diaphragm (or positive
voltage applied to tip of WA302 phone plug) produces
positive voltage on pin 2 (with respect to pin 3 of low-
impedance output) and the tip of the 1/4-inch output.
AudioInputLevel
gain max -16 dBV maximum
min (0 dB) +10 dBV maximum
GainAdjustmentRange
26 dB
InputImpedance
1 MΩ
RFTransmitterOutput
10 mW, typical
varies by region
Dimensions
110 mm x 64 mm x 21 mm (H x W x D)
Weight
75 g (2.6 oz.), without batteries
Housing
Molded ABS
PowerRequirements
2 LR6 AA batteries, 1.5 V, alkaline
BatteryLife
up to 14 hours (alkaline)
BLX4 & BLX88
OutputImpedance
XLR connector 200 Ω
6.35 mm (1/4") connector 50 Ω
AudioOutputLevel
Ref. ±33 kHz deviation with 1 kHz tone
XLR connector –27 dBV (into 100 kΩ load)
6.35 mm (1/4") connector –13 dBV (into 100 kΩ load)
RFSensitivity
-105 dBm for 12 dB SINAD, typical
ImageRejection
>50 dB, typical
Dimensions
BLX4 40 mm X 188 mm X 103 mm (H x W x D)
BLX88 40 mm X 388 mm X 116 mm (H x W x D)
Weight
BLX4 241 g (8.5 oz.)
BLX88 429 g (15.1 oz.)
Housing
Molded ABS
PowerRequirements
12–15 V DC @ 160 mA (BLX88, 320 mA), supplied by
external power supply (tip positive)
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