The Shure SLX-D+ wireless system has officially launched as the successor to the SLX-D, offering a significant expansion in tuning range, control options, and RF reliability. Designed for use in live events, permanent installations, location sound, and rental, SLX-D+ builds on the original platform’s strengths while addressing the growing demand for more frequency flexibility and remote management.
Key Improvements Over SLX-D
Compared to the SLX-D system, SLX-D+ introduces several key upgrades:
- Wider Tuning Range: SLX-D+ offers up to 138 MHz tuning (up from 44 MHz on SLX-D), allowing more flexibility across frequency bands and accommodating up to 85 channels per band.
- Lower Latency: Latency is reduced from 3.2 ms to 2.8 ms for more responsive performance.
- Encryption: SLX-D+ includes AES-256 encryption for secure signal transmission, a feature not available in SLX-D.
- ShowLink® Ease: This system allows remote control of transmitters from the receiver, enabling frequency changes, gain adjustments, locking controls, and firmware updates without direct access to the transmitter.
- Digital Feedback Reduction (DFR): Patented DSP automatically suppresses audio feedback in real time.
- Optional Dante Networking: Select SLX-D+ models include Dante integration for IP-based audio routing.
DSP and Control Enhancements
SLX-D+ expands on the high-pass filter of SLX-D by adding:
- Digital Feedback Reducer (DFR)
- Audio Summing (for Dual and Quad receivers)
These features are accessible through Shure’s Wireless Workbench desktop software and WWB Mobile app via Wi-Fi or Bluetooth, simplifying system setup and adjustments from anywhere in the venue.
Compatibility and Transition Notes
- Backward Compatibility: SLX-D+ transmitters can be used with existing SLX-D receivers, though limited to SLX-D functionality.
- Phase-Out of SLX-D: SLX-D systems are being discontinued as of February 1, 2026, and will only be available while supplies last.
Power Options
Both systems use either AA batteries or the SB903 rechargeable lithium-ion battery. SLX-D+ offers up to 8 hours of battery life and integrates with optional charging accessories like the SBC203 dual dock or SBC80-903 8-bay charger.
Summary of Key Specs:
| Feature | SLX-D | SLX-D+ |
|---|---|---|
| Tuning Range | Up to 44 MHz | Up to 138 MHz |
| Channel Count | 32 per band | Up to 85 per band |
| Latency | 3.2 ms | 2.8 ms |
| Encryption | None | AES-256 |
| ShowLink® Control | No | Yes |
| DSP | High-Pass Filter | High-Pass Filter, DFR, Audio Summing |
| Audio Output | Analog | Analog + Optional Dante |
| Battery | AA / SB903 | AA / SB903 |