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.

Features:
- 64 MHz tuning bandwidth (region dependent)
- More than 60 preset compatible channels per frequency band (region dependent)
- Up to 17 compatible systems per 6 MHz TV channel; 22 systems per 8 MHz channel
- 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 1/2" wave antennas
- Mic / line switchable XLR output
- 1/4" instrument output
- Durable aluminum 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 mobile app

Dimensions (H × W × D): 41 × 197 × 151 mm
Weight: 777 g, without antennas

Power requirements: 12 V DC @ 0.4 A, supplied by external power supply (tip positive)

Spurious Rejection: > 80 dB, typical

Connector Type: BNC
Impedance: 50 O

Gain Adjustment Range: -18 to +42 dB in 1 dB steps

Pin 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 O (50 O Unbalanced)
- XLR: 100

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: Yes