Shure SLXD4+ Wireless Reciever - S50 (823-865mhz)

The Shure SLXD4+ Wireless Receiver is a single channel, half-rack digital receiver designed to deliver rock-solid RF performance and pristine 24-bit audio in demanding real-world environments. With wide 138 MHz tuning, ShowLink Ease remote control and built-in digital feedback reduction, it gives engineers and volunteers alike the tools to run reliable, great-sounding wireless systems with confidence.

Operating in the S50 band (823 to 865 MHz), the SLXD4+ is ideal for venues needing flexible frequency options and secure, interference-resistant transmission. Once your transmitters and receivers are linked, the system automatically scans, coordinates and maintains clear channels, while you monitor and adjust everything from the front panel, Wireless Workbench software or the WWB Mobile app.

Professional Digital Audio, Accessible Control

At the heart of the SLXD4+ is transparent 24-bit digital audio with more than 118 dB of dynamic range, capturing every nuance of vocals, speech and instruments. The clean, low-noise signal path is designed to sit naturally in a mix, reducing the need for heavy EQ or dynamics processing. Despite its professional-grade performance, the receiver layout and setup workflow are straightforward, making it suitable for both seasoned engineers and trained volunteers.

Wide Tuning and Robust RF Performance

The SLXD4+ offers a generous 138 MHz tuning range, giving you far greater flexibility when working across different locations and RF environments. Within this range, you can run up to 11 simultaneous systems in 6 MHz TV bands or up to 14 in 8 MHz TV bands, subject to local conditions and configuration. Automatic setup routines help you quickly scan for clear spectrum and deploy channels, while the system maintains the link even as RF conditions change.

ShowLink Ease Remote Management

ShowLink Ease introduces a dedicated control link between SLXD+ transmitters and receivers, letting you adjust key transmitter parameters over the air. Once an open frequency is identified, you can change the transmitter channel, tweak RF power output, lock or unlock controls and even perform firmware updates without physically touching the transmitter. This is invaluable for theatre, corporate and house-of-worship applications where transmitters may be difficult to access mid-show.

Integrated Feedback Reduction and Secure Operation

Every SLXD4+ receiver includes Shure’s patented Digital Feedback Reducer, which automatically detects and reduces unwanted feedback if it starts to appear in the system. This safety net helps protect your audience’s ears and your loudspeakers, especially in challenging acoustic spaces. For security-conscious events, AES-256 encryption is built in as standard, ensuring that your audio remains private and protected from unauthorised listening.

• Transparent 24-bit Digital Audio - Delivers clear, detailed sound with more than 118 dB of dynamic range, so vocals and instruments remain natural and expressive without added noise or artefacts.
• 138 MHz Wide Tuning Range - Offers flexible frequency planning across the S50 band (823 to 865 MHz), supporting multiple simultaneous systems and helping you find clean spectrum in busy RF environments.
• ShowLink Ease Remote Control - Provides over-the-air adjustment of transmitter settings directly from the receiver, allowing you to change frequency, power level, control locks and firmware without interrupting the performance.
• Built-in Digital Feedback Reducer and AES-256 Encryption - Automatically tackles problem feedback if it occurs and keeps your audio secure, making the system suitable for both live performance and sensitive spoken-word applications.

General

• Product: Shure SLXD4+ Wireless Receiver
• Type: Single channel, half-rack digital wireless receiver
• Construction: Rugged metal chassis

Frequency & RF

• Band: S50
• Frequency Range: 823 to 865 MHz
• Tuning Range: 138 MHz
• Simultaneous Systems (6 MHz TV band): Up to 11 (subject to RF conditions and configuration)
• Simultaneous Systems (8 MHz TV band): Up to 14 (subject to RF conditions and configuration)

Audio

• Audio Format: 24-bit digital
• Dynamic Range: Greater than 118 dB

Control & Monitoring

• Automatic Setup: Scans and assigns clear frequencies, maintains link despite RF interference
• ShowLink Ease: Remote adjustment of transmitter frequency, RF power, control lock and firmware updates
• Software Control: Compatible with Shure Wireless Workbench desktop software
• Mobile Control: Compatible with WWB Mobile app over Wi-Fi or Bluetooth

Signal Management & Security

• Feedback Management: Embedded Shure Digital Feedback Reducer
• Encryption: AES-256 encryption installed as standard