The Shure GLXD14R+/SM31 is a digital wireless system complete with an SM31 FH cardioid condenser headset microphone that picks up sound from 45Hz to 20kHz. The system's water-repellent materials make it particularly suitable for use in fitness studios. The dual-band design can be operated both cost and licence-free as it works in the 2.4GHz and 5.8GHz frequency ranges and has a transmission output of 10mW, which provides a range of up to 60m. The system's automatic frequency management technology means that it always selects the signal frequency with the best reception, and it can also switch to interference-free carrier frequencies during operation without any loss of audio signal. The scope of delivery includes a rechargeable lithium ion battery for the transmitter, a power adapter for the receiver, a carrying case, and a rack-mounting kit.
The Shure GLXD14R+/SM31 digital wireless system generates a digital output signal via an XLR and 6.3mm jack socket and thus according to two different standards. The system additionally includes a USB-C interface to make firmware updates easy to install. Two different options are available for charging the lithium ion battery in the bodypack transmitter: The transmitter's USB-C connection or the battery charging socket on the front of the receiver. In addition to indicating which group and channel is active, the information provided on the receiver's high-resolution LC display also includes how much battery life remains (in hours and minutes) as well as the audio volume level and the signal gain level. The receiver's XLR output is ideal for forwarding the incoming signal to a mixing console, however, there is also the option of tapping the audio output using a jack cable if the intention is to use this to feed amplifiers or small active PA systems.
The Shure GLXD14R+/SM31 system's simple and intuitive operation makes it a good choice for newcomers to the world of wireless systems, but its design and features, such as the robust metal construction of the transmitter and stationary receiver, also make it an interesting proposition for more advanced users who plan to use it frequently. Those looking for an easy-to-use wireless system that can be operated with up to 16 transmission paths at once can do this by utilising the 2.4GHz and 5.8GHz frequency bands simultaneously. Alternatively, up to eleven receivers can be operated at the same time using just the 2.4GHz setting. And fans of rackmount installations will no doubt appreciate the 19" rack compatibility of the receiver, which measures 19.7cm in width and 4.2cm in height and features rear-mounted antennae.
The American company Shure began developing microphones during the early 1930s and is one of the pioneers of the audio engineering sector. Models such as the 55 Unidyne - known to many as the "Elvis microphone" - and the SM57 and SM58 which appeared in the mid-1960s are still ubiquitous in live sound production today. They enjoy cult status among musicians and technicians alike. In the 1990s, Shure introduced the first wireless microphones and in-ear monitoring systems and became a market leader in this field. In addition to microphones, Shure offers a wide range of earphones and headphones for studio and live use, as well as various accessories.
The Shure GLXD14R+/SM31 is a versatile wireless solution with a bodypack transmitter that is not restricted to operation with the included headset microphone: It can also be used in conjunction with handheld and lavalier microphones, and is even suitable for instrument signals, which not only makes the system ideal for fitness studios, but also for musicians, moderators, presenters, and dance schools. Whatever the case may be, users can look forward to up to 12 hours of operation on a single battery charge, and the battery level indicator makes it easy to see when the next recharge is needed. Even if only one transmitter can be used with the receiver at once, it is still possible to couple it with two transmitters simultaneously, allowing the user to change microphones or instruments much more quickly. Last but not least, the stationary receiver features a backlit display with three different brightness settings - a blessing on dark stages.