The Shure SLXD124+/85-M is a professional dual-microphone digital wireless system engineered to deliver exceptional audio quality, RF reliability, and operational simplicity for demanding presentation, performance, and worship environments. Combining the legendary SM58® handheld vocal microphone with the discreet WL185 omnidirectional lavalier microphone, this versatile combo system provides complete flexibility for events requiring both podium-style speaking and hands-free presentation capabilities.

Built on Shure's proven SLXD+ digital wireless platform, the system delivers transparent 24-bit digital audio with >118 dB dynamic range, ensuring pristine vocal reproduction with extremely low noise floor and minimal latency. The advanced digital transmission operates in the UHF spectrum with efficient channel density, allowing multiple systems to coexist in RF-congested environments without interference—critical for corporate events, educational facilities, houses of worship, and multi-presenter conferences.

The SLXD124+/85-M features Shure's innovative automatic setup capabilities including one-touch frequency scanning, infrared (IR) sync for instant transmitter-to-receiver pairing, and ShowLink® Ease remote control technology that enables wireless transmitter configuration directly from the receiver. These intelligent features dramatically reduce setup time and technical complexity, making professional wireless accessible to both seasoned audio engineers and occasional operators.

The system includes the SLXD4+ single-channel digital diversity receiver, SLXD2+/SM58 handheld transmitter with iconic SM58® capsule, and SLXD1+ bodypack transmitter pre-configured with WL185 lavalier microphone. All components feature robust metal construction, intuitive interfaces, and long battery life (up to 8 hours on two AA batteries or optional SB903 rechargeable batteries), ensuring reliable operation through the longest events.

Backed by Shure's legendary build quality, global support network, and decades of wireless expertise, the SLXD124+/85-M represents the ideal solution for venues and presenters requiring professional-grade wireless performance with maximum microphone versatility.

Shure SLXD124+/85M-G57 Key Features

  • Dual-microphone combo system – Includes both handheld (SM58®) and lavalier (WL185) microphones
  • 24-bit digital audio – Transparent sound quality with >118 dB dynamic range
  • SLXD+ digital platform – Professional-grade wireless with advanced features
  • SM58® handheld capsule – World-standard vocal microphone for warm, clear speech
  • WL185 omnidirectional lavalier – Discreet, professional-grade clip-on microphone
  • Automatic frequency scanning – Finds clean channels instantly in congested RF environments
  • IR sync technology – One-touch transmitter pairing via infrared communication
  • ShowLink® Ease remote control – Adjust transmitter settings wirelessly from receiver
  • Wide-tuning range – Greater geographical coverage and frequency flexibility
  • High channel density – Run up to 11-14 simultaneous systems (band-dependent)
  • Diversity reception – Two independent antennas eliminate dropouts
  • AES-256 encryption – Secure transmission prevents unauthorized monitoring
  • Long battery life – Up to 8 hours on two AA batteries or rechargeable SB903
  • Durable metal construction – Tour-grade reliability for permanent and portable use
  • Intuitive operation – Clear menus and displays simplify daily operation
  • Network-ready – Compatible with Wireless Workbench® control software
  • Rack-mountable receiver – Half-rack design (two fit in 1RU with optional kit)

Complete System Components

SLXD4+ Digital Wireless Receiver:

  • Single-channel true diversity receiver
  • Digital UHF operation
  • Front-panel LCD display with signal metering
  • Automatic frequency scanning and group/channel selection
  • IR sync window for transmitter pairing
  • XLR balanced and 1/4" (6.35mm) outputs
  • Adjustable audio output level (mic/line)
  • Ethernet port for Wireless Workbench® integration
  • External DC power supply (included)
  • Half-rack width (two units rack-mount in 1RU with accessory)

SLXD2+/SM58 Handheld Transmitter:

  • Digital handheld transmitter with SM58® capsule
  • Legendary SM58® cardioid dynamic microphone element
  • Durable metal construction with steel mesh grille
  • Backlit LCD display shows battery life, channel, encryption status
  • Mute switch with LED indicator
  • Powered by 2 × AA batteries (included) or SB903 rechargeable
  • IR sync port for receiver pairing
  • Adjustable RF power output (1mW/10mW)
  • Frequency lock prevents accidental changes

SLXD1+ Bodypack Transmitter:

  • Digital bodypack transmitter with belt clip
  • TA4F (4-pin mini XLR) connector for lavalier microphone
  • Includes WL185 omnidirectional lavalier microphone
  • Backlit LCD display with comprehensive status info
  • Mute switch with LED indicator
  • Powered by 2 × AA batteries (included) or SB903 rechargeable
  • IR sync port for receiver pairing
  • Adjustable input gain for optimal level
  • Locking power switch prevents accidental turn-off

WL185 Lavalier Microphone (Included):

  • Professional omnidirectional electret condenser
  • 5.0mm (0.2") diameter capsule
  • 4-foot (1.2m) detachable cable
  • TA4F connector (connects to SLXD1+ bodypack)
  • Rotating tie-clip for versatile placement
  • Includes windscreen and cable management accessories
  • Black finish for discreet appearance

Specifications

System Performance

  • Audio Quality: 24-bit digital, >118 dB dynamic range
  • Frequency Response: 50 Hz – 20 kHz (system-dependent on microphone)
  • Latency: <4 ms typical (ultra-low for live performance)
  • THD: <0.5% typical

RF Performance

  • Operating Band: M-band (varies by region; verify your specific band: G50, H55, J53, L50, etc.)
  • Tuning Bandwidth: 138 MHz (wide-tuning for geographical flexibility)
  • Switching Diversity: True diversity with two independent antennas
  • Operating Range: Up to 330 feet (100m) line of sight
  • Simultaneous Systems:
    • Up to 11 systems in 6 MHz TV bands
    • Up to 14 systems in 8 MHz TV bands
  • Automatic Frequency Selection: Scans environment and selects clean channels
  • Encryption: AES-256 digital encryption standard

Receiver (SLXD4+)

  • RF Connector: BNC (2× for diversity antennas)
  • Audio Outputs:
    • XLR balanced (mic/line switchable)
    • 1/4" (6.35mm) TRS unbalanced (mic/line switchable)
  • Output Level: Adjustable via front panel and remote
  • Display: High-contrast LCD with backlight
  • Control: Wireless Workbench® via Ethernet
  • Power: External 15V DC power supply (included)
  • Dimensions (W × H × D): 7.75" × 1.7" × 6.75" (197 × 43 × 171 mm) – half rack
  • Weight: 2.2 lbs (1.0 kg)

SLXD2+/SM58 Handheld Transmitter

  • Microphone Type: SM58® cardioid dynamic
  • Frequency Response: 50 Hz – 15 kHz (SM58® capsule)
  • Polar Pattern: Cardioid (unidirectional)
  • RF Power Output: Switchable 1mW / 10mW
  • Battery Type: 2 × AA alkaline or SB903 rechargeable
  • Battery Life: Up to 8 hours (AA alkaline)
  • Display: Backlit LCD (battery, channel, mute, encryption)
  • Dimensions: 9.9" × 2.0" diameter (252 × 51 mm)
  • Weight: 11.6 oz (330g) with batteries

SLXD1+ Bodypack Transmitter

  • Microphone Input: TA4F (4-pin mini XLR)
  • Input Gain: Adjustable -10 dB to +20 dB
  • RF Power Output: Switchable 1mW / 10mW
  • Battery Type: 2 × AA alkaline or SB903 rechargeable
  • Battery Life: Up to 8 hours (AA alkaline)
  • Display: Backlit LCD (battery, channel, mute, gain, encryption)
  • Dimensions: 3.3" × 2.6" × 0.9" (84 × 65 × 23 mm)
  • Weight: 4.2 oz (120g) with batteries
  • Belt Clip: Integrated, removable

WL185 Lavalier Microphone

  • Type: Omnidirectional electret condenser
  • Frequency Response: 50 Hz – 17 kHz
  • Polar Pattern: Omnidirectional
  • Sensitivity: -34.5 dBV/Pa (19 mV/Pa)
  • Impedance: 1800Ω
  • Cable Length: 4 feet (1.2m)
  • Connector: TA4F (to SLXD1+ bodypack)
  • Finish: Black
  • Accessories: Windscreen, tie-clip, cable management

Environmental

  • Operating Temperature:
    • Receiver: 0°C to +50°C (32°F to 122°F)
    • Transmitters: -18°C to +50°C (0°F to 122°F)
  • Storage Temperature: -29°C to +74°C (-20°F to 165°F)
  • Relative Humidity: <95% (non-condensing)

Certifications

  • FCC compliant (USA)
  • IC compliant (Canada)
  • CE compliant (Europe)
  • RoHS compliant

Why Choose the SLXD124+/85-M?

  • Complete dual-mic solution – Includes both handheld and lavalier in one package
  • Legendary microphones – SM58® and WL185 are industry standards
  • Professional digital audio – 24-bit, >118 dB dynamic range, ultra-low latency
  • Intelligent automation – IR sync, auto-scan, ShowLink® Ease simplify operation
  • Secure transmission – AES-256 encryption protects confidential communications
  • Maximum flexibility – Switch between handheld and lavalier for different presenters/situations
  • Reliable RF performance – Wide-tuning, high channel density, digital stability
  • Network-ready – Wireless Workbench® integration for multi-system management
  • Long battery life – 8 hours operation on AA or rechargeable SB903
  • Tour-grade durability – Metal construction withstands professional use
  • Shure quality – Decades of wireless expertise and global support network
  • Future-proof investment – SLXD+ platform continues to evolve with firmware updates

What's in the Box

Receiver:

  • SLXD4+ single-channel diversity receiver
  • 2 × BNC 1/4-wave antennas
  • External 15V DC power supply
  • Power cord
  • Rack ears (for optional rack mounting)

Handheld Transmitter:

  • SLXD2+/SM58 digital wireless handheld transmitter
  • SM58® cardioid dynamic microphone capsule (installed)
  • Microphone clip (for stand mounting)
  • 2 × AA alkaline batteries

Bodypack Transmitter:

  • SLXD1+ digital wireless bodypack transmitter
  • Belt clip (attached)
  • 2 × AA alkaline batteries

Lavalier Microphone:

  • WL185 omnidirectional lavalier microphone
  • Foam windscreen
  • Tie-clip (attached to microphone)
  • Cable management accessories

Documentation:

  • User guides for receiver and transmitters
  • Quick start guide
  • Safety and regulatory information
  • Warranty information

Frequently Asked Questions

Q: Can I use only the handheld or only the lavalier, or do I have to use both? A: The SLXD4+ receiver is a single-channel unit, so only one transmitter (handheld OR bodypack) can operate at a time on this receiver. To use both microphones simultaneously, you need two receivers (or one SLXD4D+ dual-channel receiver). This combo package provides flexibility to choose which microphone to use based on the situation.

Q: How do I switch between the handheld and lavalier microphones? A: Simply turn off the transmitter you're not using and turn on the one you want to use. Both transmitters are synced to the same receiver frequency, but only one can transmit at a time. If you need both operating simultaneously, purchase a second SLXD4+ receiver or upgrade to an SLXD4D+ dual-channel receiver.

Q: What's the operating range of the system? A: Up to 330 feet (100m) line-of-sight. Actual range depends on RF environment, obstacles, and whether you use 1mW or 10mW transmitter power. For longer range, use 10mW setting and ensure clear line-of-sight between transmitters and receiver.

Q: Can I use rechargeable batteries instead of AA alkaline? A: Yes. The system works with AA alkaline, lithium, or NiMH rechargeable batteries. However, Shure's SB903 lithium-ion rechargeable battery (sold separately) is specifically designed for SLXD+ transmitters and provides accurate battery metering, longer runtime, and faster charging compared to standard AA rechargeables.

Q: How many SLXD systems can operate simultaneously? A: Depending on your frequency band, you can run 11-14 systems in a 6-8 MHz TV band. For larger channel counts, use Wireless Workbench® software to coordinate frequencies across multiple systems and avoid interference.

Q: Is this system compatible with my country's wireless regulations? A: The SLXD124+/85 is available in multiple frequency bands for different regions (G50, H55, J53, L50, M-band, etc.). Verify that you purchase the correct band for your country. The "M" in SLXD124+/85-M indicates the frequency band—confirm this matches your local regulations.

Q: Can I replace the SM58® with a different microphone capsule? A: Yes. The SLXD2+ handheld transmitter accepts interchangeable Shure capsules including Beta 58A, Beta 87A, Beta 87C, SM86, Beta 57A, and others. Simply unscrew the SM58® capsule and attach your preferred capsule.

Q: Can I use a different lavalier microphone with the bodypack? A: Yes, but the microphone must have a TA4F connector (4-pin mini XLR) compatible with the SLXD1+ bodypack. Shure offers WL93, WL183, WL184, and other professional lavaliers. Third-party lavalieres with TA4F connectors may also work but performance will vary.

Q: Does the system require licensing or frequency coordination? A: In most countries, UHF wireless microphones operate in licensed spectrum or shared bands. Check your local regulations. You may need a frequency license depending on your region and frequency band. Wireless Workbench® can help with frequency coordination.

Q: What's the difference between SLXD and QLXD or ULXD systems? A: SLXD+ is Shure's mid-tier digital wireless platform with professional features at accessible pricing. QLXD offers similar quality with different feature set (no ShowLink® Ease). ULXD is Shure's flagship touring system with higher channel density, Dante networking, and advanced features. SLXD+ is ideal for permanent installations and portable applications where ULXD features aren't required.

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