Shure SLXD24D+/B58 Dual Wireless Handheld System with Beta 58A Microphones – CH38/CH70

Shure SLXD24D+/B58 – Dual Professional Wireless Handheld Microphone System with Beta 58A®

The Shure SLXD24D+/B58 Dual Wireless Handheld System combines two legendary Beta 58A® supercardioid dynamic microphones with the advanced SLX-D+ digital wireless platform, providing a powerful dual-channel solution for professional vocal applications.

Designed for engineers, performers, presenters and AV teams, this system delivers transparent 24-bit digital audio, rock-solid RF performance and intelligent remote management via ShowLink® Ease. It is ideally suited to live stages, houses of worship, theatres, conference venues and broadcast environments where multiple presenters or performers require dependable wireless operation.

The system features the half-rack SLXD4D+ dual-channel receiver paired with two SLXD2+ handheld transmitters, operating across a wide 138 MHz tuning range. This allows up to 11 simultaneous systems in 6 MHz TV bands and up to 14 systems in 8 MHz bands. Automatic Setup keeps transmitters and receivers securely linked even in challenging RF conditions, while ShowLink® Ease enables remote control of transmitter gain, frequency changes, locking, firmware updates and real-time monitoring via Shure Wireless Workbench or the mobile app.

• For the CH70 variant: This frequency band (823–865 MHz) is license-free in the UK, making it ideal for venues seeking simple, hassle-free wireless operation without licensing requirements.
• For the CH38 variant: This frequency band (606–694 MHz) is licensed in the UK, offering greater protection from interference and preferred for professional touring, theatre and large-scale productions.

Security and performance are further enhanced with built-in AES-256 encryption and Shure’s Digital Feedback Reducer (DFR), which automatically suppresses feedback before it becomes audible. With up to 8 hours of operation from two AA batteries or optional Shure SB903 rechargeable batteries, the SLXD24D+/B58 is designed for reliable performance across long events and demanding schedules.

The system includes the SLXD4D+ dual receiver, two SLXD2+ handheld transmitters with integrated Beta 58A® microphone capsules, antennas, rackmount kit, power supply and accessories — providing a complete professional dual wireless solution ready to deploy straight out of the box.

Shure SLXD24D+/B58 Key Features:

• Beta 58A® Microphones: Dual supercardioid dynamic vocal microphones with high gain-before-feedback and excellent off-axis rejection.
• 24-Bit Digital Audio: Transparent sound quality with >118 dB dynamic range.
• Dual-Channel Receiver: Half-rack SLXD4D+ receiver supports two simultaneous handheld systems.
• Reliable RF Performance: 138 MHz wide tuning range with automatic setup and ShowLink® Ease remote control.
• Digital Feedback Reduction: Patented Shure DSP automatically suppresses unwanted feedback.
• AES-256 Encryption: Secure wireless transmission for professional applications.
• Flexible Power Options: Up to 8 hours from AA batteries or optional SB903 rechargeable batteries.
• Mobile & Desktop Monitoring: Full system control via Wireless Workbench desktop or mobile app.
• Rugged Professional Design: Aluminium handheld transmitters built for touring and live use.
  

SLX-D+ vs SLX-D – What’s New?

Shure’s SLX-D+ Wireless Microphone Systems take everything that made SLX-D a trusted professional solution and make it even better. While the audio quality remains the same crystal-clear 24-bit digital sound you expect, SLX-D+ adds enhanced features for easier setup, more reliable performance, and greater flexibility across a wide range of venues.

Key Improvements in SLX-D+:

• Expanded Wide Tuning Range: 138 MHz coverage on all components gives you more flexibility to operate in different regions and crowded RF environments.
• ShowLink® Ease: Adjust transmitter settings remotely from the receiver, including gain control, firmware updates, and automatic frequency scanning — all without touching the transmitter.
• Digital Feedback Reduction (DFR): Shure’s patented DSP automatically suppresses unwanted feedback, ensuring smooth and uninterrupted audio.
• AES-256 Encryption: Each component includes advanced encryption for secure and private wireless transmission.
• Lower Latency: Improved 2.8 ms latency ensures audio remains perfectly in sync with live performance or presentations.
• Bluetooth & Wireless Monitoring: Track and manage system status via Wireless Workbench and mobile apps from iOS or Android devices.
• Flexible System Configurations: Choose from portable, ½ rack, or full rack quad receivers, plus bodypack, handheld, and plug-on transmitters for any scenario.
• Reliable Power Options: Use standard AA batteries for up to 8 hours, or Shure’s SB903 Li-ion rechargeable batteries for convenient charging solutions.

SLX-D+ is ideal for professional engineers, volunteers, and performers who want the simplicity and reliability of SLX-D, but with automated setup, smarter monitoring, and additional security. Whether you’re on stage, in a lecture hall, a place of worship, or managing a complex multi-channel installation, SLX-D+ makes wireless audio easier, faster, and more dependable.

RF Carrier Frequency Range:

• CH70: 823–865 MHz (License-Free UK)
• CH38: 606 to 694 MHz (Licensed)
  

Working Range: 100 m (328 ft) line-of-sight
RF Tuning Step Size: 125 kHz (JB Band), 25 kHz (other bands, region-dependent)
RF Sensitivity: −97 dBm at 10⁻⁵ BER
Image Rejection: >85 dB typical
Latency: 2.8 ms
High-Pass Filter: 160 Hz, –12 dB/octave (factory default off)
Audio Frequency Response: 50 Hz – 16 kHz
Audio Dynamic Range: 118 dB A-weighted (typical)
Total Harmonic Distortion: <0.02%
System Audio Polarity:

• XLR: Positive pressure on mic diaphragm produces positive voltage on pin 2 with respect to pin 3
• TRS: Positive pressure on mic diaphragm produces positive voltage on tip with respect to ring
  Mic Offset Range: 0–21 dB in 3 dB steps
  Operating Temperature: 0 °F to 122 °F (−18 °C to 50 °C)
  Storage Temperature: −20 °F to 165 °F (−29 °C to 74 °C)

SLXD2+ Handheld:

• Battery Type: AA or SB903 Li-ion rechargeable
• Dimensions (Dia × L): 37.1 × 176 mm (1.46 × 6.93 in)
• Weight: 144 g (5.1 oz)
• Housing: Aluminium
• Audio Input: Unbalanced, Max Input Level 8.2 dBV

SLXD4D+ Dual Receiver:

• Dimensions (H × W × D): 42 × 197 × 152 mm (1.65 × 7.76 × 5.98 in)
• Weight: 930 g (2 lbs) without antennas
• Housing: Galvanised steel
• RF Input: BNC, 50 Ω impedance, >75 dB spurious rejection
• Audio Output: XLR and 6.35 mm TRS, balanced, gain adjustment –18 to +42 dB
• Phantom Power Protection: Yes
• Network Interface: Single Port Ethernet 10/100 Mbps, DHCP/manual IP
• Max Cable Length: 100 m (328 ft)

WHAT'S IN THE BOX

• 1 x SLXD4D+ Digital Wireless Receiver
• 2 x SLXD2+/B58 Handheld Transmitter with Beta® 58A Cardioid Dynamic Microphones
• 2 x Microphone clips
• 2 x 1/4 wave antennas
• 1 x Rackmount kit
• 4 x AA batteries
• 1 x Power supply
• 2 x Carrying pouches