Shure BLX288/B58 Dual Beta 58 Wireless Handheld Microphone System

Working Range: 91 m (300 ft) Line of Sight (Note: Actual range depends on RF signal absorption, reflection and interference)
Audio Frequency Response: 50 to 15,000 Hz (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.

RF Sensitivity: -105 dBm for 12 dB SINAD, typical
Image Rejection: >50 dB, typical

Dimensions (H x W x D): 1.50 x 12.13 x 3.98" (38 x 308 x 101 mm)
Weight: 15.1 oz. (429 g)
Housing: Molded ABS
Power Requirements: 12-15 V DC @ 235 mA (BLX88, 320 mA), supplied by external power supply (tip positive)
Dimensions and Weight in Packaging
Band H10 (542-572 MHz)
Shipping Weight: 5 lbs
Shipping Dimensions: 20 x 16 x 4 in
Manufacturer Part Number (MPN): BLX288/B58-H10
Band H11 (572-596 MHz)
Shipping Weight: 5 lbs
Shipping Dimensions: 19 x 16 x 4 in
Manufacturer Part Number (MPN): BLX288/B58-H11
Band H9 (512-542 MHz)
Shipping Weight: 5 lbs
Shipping Dimensions: 19 x 16 x 4 in
Manufacturer Part Number (MPN): BLX288/B58-H9
Band J11 (596-616 MHz)
Shipping Weight: 5 lbs
Shipping Dimensions: 19 x 16 x 4 in
Manufacturer Part Number (MPN): BLX288/B58-J11
If you have additional warranty questions, please contact the manufacturer at 800-25-SHURE
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