SHURE QLXD24E/B58-K51 Microphone (Transmitter-Receiver)

Shure QLXD24E/B58-K51 Digital Wireless Vocal System (K51 Frequency Band)

The Shure QLXD24E/B58-K51 is a premium digital wireless system designed for professional events, concert halls, and installations where clear audio and reliable connectivity are essential. This package combines the Beta 58A supercardioid dynamic microphone with advanced QLX-D digital technology. The system operates in the K51 frequency band (606–670 MHz) and provides 24-bit digital audio transmission without any signal compression or artifacts.

The system features highly efficient radio frequency spectrum utilization, allowing more compatible channels to fit within a single 8 MHz TV channel compared to other systems in its class. The QLXD4 receiver has an Ethernet port for network scanning and control, while AES-256 encryption ensures secure data transmission for confidential events. The Beta 58A capsule provides excellent isolation from stage noise and allows for higher gain without feedback. The robust metal construction of both the receiver and transmitter ensures durability.

Key Features

• Capsule: Shure Beta 58A (Supercardioid) – for vocal enhancement and noise rejection.
• Audio Quality: 24-bit digital audio with >120 dB dynamic range.
• Frequency Band: K51 (606–670 MHz).
• Security: AES-256 bit encryption.
• Network Control: Ethernet port for network scanning and integration (Wireless Workbench, ShurePlus Channels).
• Stability: Digital Predictive Switching Diversity.
• Power: Up to 9 hours with AA batteries or up to 10 hours with SB900B rechargeable battery.
• Construction: Metal receiver (Half-rack) and metal handheld transmitter.

Technical Specifications

• Type: Digital Wireless System (Digital UHF)
• Frequency Band: K51 (606–670 MHz)
• Audio Frequency Response: 20 Hz – 20,000 Hz (microphone dependent)
• Dynamic Range: > 120 dB (A-weighted)
• Latency: < 2.9 ms
• Operating Range: Up to 100 meters
• Receiver Outputs: XLR Male connector (balanced) and 6.3 mm Female connector (instrumental)
• Network Connection: RJ45 Ethernet Female connector
• Receiver Dimensions: 41 x 197 x 151 mm
• Receiver Weight: Approximately 0.777 kg
• Transmitter Dimensions: 256 x 51 mm
• Transmitter Weight: Approximately 0.347 kg (without batteries)

Included in the box

• 1 x QLXD4 Digital Receiver
• 1 x QLXD2 Handheld Transmitter with Beta 58A capsule
• 1 x Microphone clip
• 1 x Power supply
• 2 x 1/2 wave antennas
• 2 x BNC cables and bulkhead adapters (for front mounting antennas)
• 1 x Rack mount hardware kit
• 2 x AA batteries
• 1 x Protective pouch for transmitter

Intended for:

• Professional vocalists and concerts.
• Conference centers and corporate events.
• Government agencies (due to encryption).
• Houses of worship and auditoriums.