Shure QLXD24/SM58 Digital Wireless Handheld Microphone System

The QLXD24/SM58 Wireless Vocal System with SM58, an industry-standard, highly versatile cardioid dynamic vocal microphone, combines automatic frequency management with true digital diversity for a rock-solid wireless signal with exceptional digital audio clarity.

The SM58 Vocal Dynamic Microphone

A legendary mainstay of live performances, the SM58 is the mic that set the world standard. Boasting a classic look and world-renowned engineering, the SM58 is a durable, versatile mic that handles vocals with clarity and precision. It features a uniform cardioid polar pattern that faithfully reproduces your vocals so that they sound their best. An integrated pneumatic shock mount absorbs handling noise, so your sound doesn’t get lost in vibration. Meanwhile, the iconic spherical mesh grille and the mic’s built-in pop filter protect your audio from wind and plosives. This ruggedly-built mic is designed specifically to handle the rigors of touring and travel, so you can take it anywhere with you and perform on the go with confidence. Also included with the SM58 is a break-resistant swivel stand adapter and a storage bag to protect it from dust or other debris while in storage.

The QLXD2 Handheld Microphone Transmitter

Great for wireless vocals in presentation spaces, music venues, and houses of worship, the QLXD2 is ruggedly built and simple to set up. Boasting transparent 24-bit digital audio quality and incredibly efficient RF spectrum usage, this handheld mic transmitter quickly syncs with a wireless receiver over IR at the push of a button, then maintains its clear, uninterrupted signal over its full 100 m (330 ft.) range. And, when using just 2 AA alkaline batteries, you can enjoy up to 9 hours of continuous, wireless use.

Freedom and flexibility are hallmarks of the QLXD2. Selectable display mode shows group/channel, frequency, or battery runtime for quick checks and adjustments. Choose from a wide selection of compatible microphone options to achieve legendary Shure sound signatures. (Note: When purchasing separate wireless components, please match their frequency bands to ensure proper system operation.)

The QLXD4 Digital Wireless Receiver

Get the perfect balance of professional features and intuitive efficiency with the QLXD4 digital wireless receiver. This receiver has transparent 24-bit digital audio quality and incredibly efficient RF spectrum usage. Streamline your workflow: Find open frequencies fast with automatic scanning, then deploy them to transmitters using one-touch IR sync.

Experience expanded capabilities with ethernet networking. This allows you to use networked channel scanning across multiple receivers, remotely control settings from your computer via Wireless Workbench® software integration, and remote monitoring from iOS devices is also available (via the ShurePlus™ Channels Mobile App).

More about QLX-D Digital Wireless Systems

QLX-D Digital Wireless systems deliver more wireless capacity to mid-size venues without compromising signal. Streamline setup across multiple receivers. The 24-bit digital audio and the wide frequency response capture the sound as clearly and accurately as it was produced. Wireless Workbench® software provides real-time access, monitoring and control throughout the performance, allowing you to manage the system from your iOS device for maximum convenience. The rechargeable lithium-ion battery option extends performance on stage.

Shure QLXD24/SM58 Features

• Transparent 24-bit digital audio
• Digital predictive switching diversity
• Easy pairing of transmitters and receivers over IR scan and sync
• Automatic channel scan
• Ethernet networking for multiple receiver systems
• Network channel scanning configures open frequencies for networked receivers
• Elegant and easy-to-use interface with high-contrast LCD menu
• Professional-grade all-metal construction

• QLXD4 receiver1
• SM58 wireless handheld microphone1
• AA batteries2
• 2 BNC cables2
• Zipper bag1
• BNC bulkhead adapters2
• Rackmount kit1
• Power supply1

• RF Carrier Range 174 - 216 MHz, 470 - 865 MHz, 1492 - 1525 MHz, 1785 - 1805 MHz, varies by region
• Working Range 100 m (Actual range depends on RF signal absorption, reflection and interference)
• RF Tuning Step Size 25 kHz, varies by region
• Image Rejection >70 dB, typical
• RF Sensitivity −97 dBm at 10−5 BER
• Latency <2.9 ms
• Audio Frequency Response
  • QLXD1: 20 Hz – 20 kHz (±1 dB)
  • QLXD2: Note: Dependent on microphone type
• Audio Dynamic Range System (Gain @ +10) >120 dB, A-weighted, typical
• Total Harmonic Distortion (−12 dBFS input, System Gain @ +10) < 0.1%
• System Audio Polarity Positive pressure on microphone diaphragm produces positive voltage on pin 2 (with respect to pin 3 of XLR output) and the tip of the 6.35 mm (1/4-inch) output.
• Operating Temperature Range -18 °C to 50 °C (Battery characteristics may limit this range)
• Storage Temperature Range -29 °C to 74 °C (Battery characteristics may limit this range)
• QLXD4
  • Dimensions: 41 mm x 197 mm x 151 mm (1.63 in. x 7.75 in. x 5.94 in.), H x W x D
  • Weight: 777 g (1.71 lbs), without antennas
  • Housing: steel
  • Power Requirements: 12 V DC @ 0.4 A, supplied by external power supply (tip positive)
  • RF Input
  • Spurious Rejection: >80 dB, typical
  • Connector Type: BNC
  • Impedance: 50 Ω
  • Audio Output
    • Gain Adjustment Range: -18 to +42 dB (in 1 dB steps)
  • Configuration
    • 1/4" (6.35 mm): Impedance balanced (Tip=audio, Ring=no audio, Sleeve=ground)
    • XLR: balanced (1=ground, 2=audio +, 3=audio −)
  • Impedance
    • 1/4" (6.35 mm): 100 Ω (50 ΩUnbalanced)
    • XLR: 100 Ω
  • Full Scale Output
    • 1/4" (6.35 mm): +12 dBV
    • XLR: LINE setting= +18 dBV, MIC setting= -12 dBV
  • Mic/Line Switch: 30 dB pad
  • Phantom Power Protection
    • 1/4" (6.35 mm): Yes
    • XLR: Yes
  • Networking
    • Network Interface: Single Port Ethernet 10/100 Mbps
    • Network Addressing Capability: DHCP or Manual IP address
    • Maximum Cable Length: 100 m (328 ft)
• SM58
  • Type: dynamic
  • Frequency Response: 50Hz to 15,000Hz
  • Polar Pattern: cardioid
  • Sensitivity (at 1000Hz open circuit voltage): –54.5 dBV/Pa (1.85 mV)
  • Impedance: rated impedance is 150 Ω (300 Ω actual) for connection to microphone inputs rated low impedance
  • Polarity: positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
  • Connector: 3-pin professional audio connector (male XLR type)