Shure GLXD14+/SM31 Digital Wireless Headset System with SM31 Headset Microphone

Dependable Wireless Audio that Anyone Can Use

The Shure GLXD14+ is a digital wireless fitness headset mic system that delivers reliable hands-free audio, great sound quality, and ease of use, even if you've never used a wireless system before. Shure's next-generation technology sets it up for you, automatically scanning the 2.4 and 5.8 GHz bands for the best possible digital transmission channel to ensure reliable performance for your training and exercise demonstrations, with a typical range of up to 100 feet indoors and 65' outdoors.

Bodypack Transmitter + SM31 Omnidirectional Fitness Headset Mic

This version of the GLXD14+ is equipped with a bodypack transmitter and SM31 fitness headset microphone, providing a safe and comfortable wearing experience for sports and aerobic trainers. The headset features an integrated moisture-wicking hydrophobic fabric that protects the microphone capsule from sweat and moisture, while a lightweight, flat profile reduces fatigue under heavy loads. The electret condenser capsule is tailored for presentations and produces crisp, clear vocals, and the cardioid polar pattern helps focus the audio pickup on the subject, picking up less ambient noise and reducing use of public address feedback issues with devices.

A windscreen is provided to reduce plosives and vocal pops. The mic plugs into the TA4F connector on the rugged, metal GLXD1+ bodypack transmitter, which offers an ergonomic design and a comfortable fit with a convenient on/off switch that can be operated by feel. Up to 12 hours of operation are supplied by the included SB904 rechargeable lithium-ion battery. A red and green LED indicator shows sync and battery statuses at a glance.

Portable Tabletop Receiver

This configuration includes a portable tabletop receiver made from durable ABS plastic with front-panel charging for the SB904 battery and an easy-to-read display that shows pertinent information. The system transmits audio with a flat, 20 Hz to 20 kHz frequency response and 120 dB of dynamic range, leaving the sound of your mic unaffected by the wireless components. The transmitter's input gain can be wirelessly adjusted right from the receiver's front panel to optimize the audio signal. The rear panel provides a balanced XLR output switchable between mic and line levels along with a balanced 1/4" Inst/Aux output.

GLX-D+ Dual-Band Digital Wireless systems operate in both the 2.4 and 5.8 GHz frequency ranges, automatically scanning both to select the one that offers the higher number of clean channels. The previous GLX-D only worked in the 2.4 GHz range, which offers 83.5 MHz of bandwidth. By expanding into the 5.8 GHz range, the GLX-D+ provides an additional 125 MHz worth of potential open frequencies for available channels, helping to minimize dropouts and enhance reliability.

The system offers true digital diversity, which means two antennas and two independent receiver modules work together to reduce RF signal dropouts. In addition to the main transmission frequency, the GLX-D+ is constantly monitoring 2 extra "backup frequencies", so if the system detects interference, it will switch to one of the backups automatically without the user even knowing. Besides the additional spectrum, there are other benefits to in operating in the 5.8 GHz range. In general, there are fewer devices operating in this range, making the spectrum cleaner. The 2.4 GHz range is home for Bluetooth devices and other devices, including Wi-Fi routers and repeaters, security cameras, baby monitors, garage door openers, and more. Operating in this range means competing with these devices for the same space. GLX-D+ receivers typically allow you to run up to 4 mics simultaneously in the same space. Under ideal conditions, up to 8 systems can be used. If you need more mics at once, consider a system with the GLXDR+ half-rack receiver, which offers removable antennas and can accommodate the GLXD+FM Frequency Manager (available separately). The frequency manager allows up to 11 mics to operate simultaneously (16 under highly optimal conditions) making it ideal for installations with multiple wireless systems.

Intelligent Battery Rechargeability

The GLXD1+ bodypack transmitter runs on an intelligent SB904 rechargeable lithium-ion battery (included). The battery provides up to 12 hours of continuous use on a full charge. The transmitter automatically powers off after approximately 1 hour to conserve battery life if the signal from a linked receiver is not detected. The SB904 battery can be recharged in the GLXDR4+ receiver's charging bay (located on the front panel). The charging bay can also be used to recharge a spare battery while the transmitter is in use. Alternately, the SB904 can be recharged while in the bodypack transmitter with a USB charging cable. Just a 15-minute quick charge provides 1.5 hours of use. The SB904's remaining battery life is displayed in hours and minutes from the receiver's front panel.

• For fitness and aerobics instructors
• SM31 omnidirectional fitness headset mic
• Lightweight bodypack transmitter
• Portable tabletop receiver
• Auto scans 2.4 and 5.8 GHz frequencies
• Easy setup with auto pairing
• 208.5 MHz total bandwidth
• Fixed front-panel antennas
• Front panel charges 12-hr SB904 battery
• Expandable to 4 mic channels/100' range

GLXD4+ User Guide

SM31FH Spec Sheet

• (1) GLXD4+ Dual-Band Wireless Tabletop Receiver (Z3: 2.4, 5.8 GHz)
• (1) GLXD1+ Dual-Band Wireless Bodypack Transmitter (Z3: 2.4, 5.8 GHz)
• (1) SM31FH Fitness Headset Condenser Microphone
• (1) PS43 Power Supply
• (1) SB904 Lithium-Ion Rechargeable Battery
• (1) Black Carrying Case