SHUQLXD4UKK51 - Shure QLXD4 Digital Wireless Half Rack Receiver K51 606 670 MHz Image 1

SHUQLXD4UKK51 - Shure QLXD4 Digital Wireless Half Rack Receiver K51 606 670 MHz Image 2

SHUQLXD4UKK51 - Shure QLXD4 Digital Wireless Half Rack Receiver K51 606 670 MHz Image 3

Featuring transparent 24 bit digital audio quality and incredibly efficient RF spectrum usage, the QLXD4 is a half-rack digital wireless receiver for use with QLX-D™ Digital Wireless Systems. Ideal for presentation spaces, music venues, and houses of worship, the QLXD4 combines professional features with streamlined setup and operation. Automatic scanning quickly finds open frequencies and one-touch sync quickly deploys them to transmitters. Ethernet networking enables networked channel scanning across multiple receivers and Wireless Workbench software integration for remote control of receiver settings from a PC or Mac.

Product Features

Up to 72 MHz tuning bandwidth (region dependent)
Up to 168 compatible channels per frequency band (region dependent)
Digital predictive switching diversity ensures solid RF connection
Automatic channel scan quickly finds the cleanest frequency
IR sync deploys selected frequency to transmitter
Ethernet networking provides streamlined setup across multiple receivers
Networked channel scan configures open frequencies for all connected receivers
AES 256-bit encryption for secure wireless transmission
Up to 60 dB of adjustable audio gain
High-contrast LCD menu and controls with lockout feature
Audio and RF LED meters with peak indicator
Detachable ½ wave antennas
Mic / line switchable XLR output
¼” instrument output
Durable steel construction with brushed finish
Professional-grade rack hardware included
Compatible with Shure Wireless Workbench® 6 control software
Remote monitoring and control from iOS devices via ShurePlus™ Channels app

Product Specifications

System Specifications

RF Carrier Range: 174 - 216 MHz, 470 - 865 MHz, 1492 - 1525 MHz, 1785 - 1805 MHz, varies by region
Working Range: 100 m Note: 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 Note: Battery characteristics may limit this range
Storage Temperature Range: -29 °C to 74 °C Note: Battery characteristics may limit this range

QLXD4 Specifications

Dimensions: 41 × 197 × 151 mm, H × W × D
Weight: 777 g, 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 Ω Unbalanced) 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 Ethernet Cable: Length 100 m