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Shure BLX4=-H9 Wireless Receiver for BLX Wireless System (H9 Frequency Band)
Expected May 31, 2025
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Analog wireless receiver provides improved linearity and frequency response with group and channel scan for easy set-up. Features include microprocessor internal antenna diversity, frequency QuickScan, and two-color audio status indicator LED. The durable BLX4 features simple setup, intuitive controls, and microprocessor-controlled internal antenna diversity. One-touch QuickScan frequency selection quickly locates the best open frequency in case of interference. For use with BLX Wireless Systems.
Note: When purchasing separate wireless components, please match their frequency bands to ensure proper system operation.
Shure BLX4 Wireless Receiver Features:
- XLR and ¼" output connectors.
- Two-color audio status indicator LED.
- Green: Normal audio levels.
- Red: Excessive audio levels (overload / clipping.)
Shure BLX4 Product Specifications:
System
Working Range: 91 m (300 ft) Line of Sight (Note: Depends on RF signal absorption, reflection and interference.)
Audio Frequency Response: 50 to 15,000 Hz (Note: Dependent on microphone type)
Total Harmonic Distortion (Ref. ±33 kHz deviation with 1 kHz tone): 0.5%, typical
Dynamic Range: 100 dB, A-weighted, typical
Operating Temperature: -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 high impedance 1/4-inch output.
BLX4
Output Impedance
XLR connector: 200 Ω
6.35 mm (1/4") connector: 50 Ω
Audio Output Level (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)
RF Sensitivity: -105 dBm for 12 dB SINAD, typical
Image Rejection: >50 dB, typical
Dimensions: 1.57 in. X 7.40 in. X 4.06in. (40 mm X 188 mm X 103 mm) H x W x D
Weight: 8.5 oz. (241 g)
Housing: Molded ABS
Power Requirements: 12-15 V DC @ 235 mA (BLX88, 320 mA), supplied by external power supply (tip positive)
Each BLX4 Retail Box Includes:
(1) Shure BLX4 Wireless Receiver (H9 Band)