Professional fitness instructors and performers can now own the stage with confidence using the BLX14/SM31 Headworn Wireless System, a precision-built solution that combines legendary Shure audio quality with simple setup. This comprehensive system operates on the K14 frequency band and includes everything needed for professional performance: the BLX4R wireless receiver, BLX1 bodypack transmitter, SM31 fitness headset microphone, power supply, clothing clip, windscreens, and user guide. The BLX® Wireless Systems family brings professional-quality sound with an intuitive interface that works right out of the box.
The rack-mountable BLX4R receiver features rugged metal construction with XLR and ¼" output connectors, plus one-touch QuickScan frequency selection that quickly locates the best open frequency when interference occurs. Its microprocessor-controlled internal antenna diversity, adjustable output level, and LCD display with detailed RF and audio metering provide professional control, while removable antennas allow for quick antenna distribution. The lightweight BLX1 bodypack transmitter offers ergonomic design with adjustable gain control and runs up to 14 hours continuously on just 2 AA batteries, with quick and easy receiver frequency matching.
Built specifically for demanding fitness applications, the SM31FH cardioid condenser microphone stands apart with its hydrophobic materials and moisture-repellent cartridge housing that protects against the corrosion damage that typically causes fitness headsets to fail. The wireframe headset fits securely and comfortably during high-impact use, featuring a flexible gooseneck for discrete placement adjustment and optimal isolation. With its TA4F (TQG) connector compatible with any Shure wireless bodypack, included windscreen for clean sound reproduction, and tailored frequency response for crisp vocal clarity, this system provides the durability and performance that fitness and aerobics instructors demand.



