Shure BLX2 - Receiver and Control Management; Manually Setting Receiver Group and Channel; Locking and Unlocking Controls; Tips to Improve Wireless System Performance

8
BLX
BLX1
BLX2
Audio Input Level gain position
0dB:
-23 dBV
maximum
-10dB:
-10 dBV
maximum
Gain Adjustment
Range
10 dB
RF Transmitter
Output
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
Power
Requirements
2 LR6 AA batteries, 1.5 V,
alkaline
Battery Life
up to 14 hours (alkaline)
Working Range
91 m (300 ft) Line of Sight
Note: Actual range depends
on RF signal absorption, re-
flection and interference.
Audio Frequency
Response
50 to 15,000 Hz
Note: Dependent on micro-
phone type
Total Harmonic
Distortion
Ref. ±33 kHz devia-
tion with 1 kHz tone
0.5%, typical
Dynamic Range
100 dBA-weighted, typical
Operating
Temperature
-18°C (0°F) to 57°C (135°F)
Note: Battery characteristics
may limit this range.
Polarity
Positive pressure on mi-
crophone 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 high impedance
1/4-inch output.
Audio Input Level gain position
max:
-16 dBV
maximum
min (0
dB):
+10 dBV
maximum
Gain Adjustment
Range
26 dB
Input Impedance
1MΩ
RF Transmitter
Output
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
Power
Requirements
2 LR6 AA batteries, 1.5 V,
alkaline
Battery Life
up to 14 hours (alkaline)
BLX4 & BLX88
Output Impedance XLR con-
nector:
200Ω
6.35 mm
(1/4")
connec-
tor:
50Ω
Audio Output Level
Ref. ±33 kHz deviation
with 1 kHz tone
XLR con-
nector:
–27 dBV
(into100kΩ
load)
6.35 mm
(1/4")
connec-
tor:
–13 dBV
(into100kΩ
load)
RF Sensitivity
-105 dBm for 12 dB SINAD,
typical
Image Rejection
>50 dB, typical
Dimensions BLX4:
188 mm X
103 mm X
40 mm (H x
W x D)
BLX88:
388 mm X
116 mm X
40 mm (H x
W x D)
Weight BLX4:
241 g (8.5
oz.)
BLX88:
429 g (15.1
oz.)
Housing
Molded ABS
Power Requirements
12–15 V DC @ 160 mA
(BLX88, 320 mA), supplied
by external power supply
(tip positive)