Shure SLXD14/DL4B Digital Wireless DuraPlex Omni Lavalier Microphone System (J52: 558 to 602 + 614 to 616 MHz)

The Shure SLXD14/DL4B-J52 is a digital wireless lavalier microphone system designed for presenters, performers, and technical teams who demand reliable audio and an easy setup. The package combines the SLXD4 single channel receiver, the SLXD1 bodypack transmitter, and the DuraPlex DL4 subminiature omnidirectional lavalier mic, giving you a full signal chain that is ready to drop into conference rooms, classrooms, houses of worship, and small to mid-sized live venues.

At the heart of the system is 24-bit digital transmission that rides on the J52 UHF band from 558 to 602 MHz with a short additional span at 614 to 616 MHz. This range provides 1840 selectable frequencies and a 46 MHz tuning bandwidth, so coordination is straightforward even when up to 32 compatible systems are running side by side. An impressive 120 dB dynamic range preserves subtle speech details as well as louder passages, making the system useful for everything from calm board-room discussions to energetic theater productions.

The included DL4 lavalier features a 5 mm capsule for discreet placement on jackets, ties, or costume fabric. Its IP57 rating guards against water and dust, and the 1.6 mm Shure Plex cable resists tangles while reducing handling noise. Those qualities make the mic a dependable choice for outdoor ceremonies, long rehearsal days, or busy rental inventories where durability is a must.

The SLXD1 bodypack transmitter keeps the signal stable at distances up to 330 ft. You can select 1 mW for close-range work or 10 mW when you need extra reach in RF-dense environments. Power comes from two AA batteries for a quick swap or the optional SB903 lithium-ion unit for up to eight hours of continuous runtime.

On the rack side, the SLXD4 receiver provides removable antennas for remote placement, an intuitive LCD interface, and both XLR and 1/4 in balanced outputs with a 60 dB gain adjustment range. IR sync establishes a secure link to the transmitter in seconds, while Ethernet networking allows more advanced users to coordinate multiple channels from a single computer.

Whether you are building a portable audio kit for video shoots or installing a multi-mic system in a corporate auditorium, the SLXD14/DL4B-J52 delivers modern digital clarity, robust RF performance, and the stage-proven build quality expected from Shure.

Highlights:

• 24-bit digital UHF transmission with 120 dB dynamic range
• DuraPlex DL4 IP57 omnidirectional lavalier mic with 1.6 mm cable and 5 mm capsule
• SLXD1 bodypack transmitter with selectable 1 mW or 10 mW RF power and 330 ft range
• SLXD4 receiver with removable antennas, LCD interface, XLR and 1/4 in balanced outputs
• Operates up to 32 compatible systems per band across 1840 selectable frequencies
• 46 MHz tuning bandwidth on J52 band (558–602 MHz plus 614–616 MHz)
• Runs up to eight hours on two AA batteries or the optional SB903 rechargeable pack
• IR sync and Ethernet networking for fast, coordinated multi-unit setup