Shure QLXD1-H51 Bodypack Transmitter
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Description
Description
Shure QLXD1-H51 Digital Wireless Bodypack Transmitter
The Shure QLXD1-H51 is a professional, metal-bodied digital wireless transmitter designed for use with QLX-D series receivers in the H51 frequency band (534–598 MHz). This compact device provides completely transparent 24-bit digital audio transmission and boasts a wide dynamic range of over 120 dB. This feature eliminates the need for input gain adjustment on the transmitter – it automatically adapts to various sound source levels, from a quiet whisper to a loud guitar.
The QLXD1 is an ideal choice for vocals and instruments in presentations, musical events, or church settings. Advanced AES-256 encryption is used to ensure secure data transmission, making the system suitable for confidential business meetings or government institutions. The transmitter features a standard TQG (TA4M) connector, compatible with Shure lavalier, headset microphones, and instrument cables. The device is powered by two AA batteries or a Shure SB900B lithium-ion rechargeable battery, which can be charged using external charging contacts (with an additional charging station).
Key Features
- Audio Quality: 24-bit digital audio without compression.
- Dynamic Range: Over 120 dB (A-weighted), no gain adjustment needed.
- Security: AES-256 bit encryption for secure signal transmission.
- Frequency Band: H51 (534–598 MHz).
- Power: Up to 9 hours with AA batteries or up to 10 hours with SB900B rechargeable battery.
- Construction: Durable metal construction, resistant to wear and tear.
- Control: Backlit LCD screen with an intuitive menu.
- Charging: External contacts for charging in a docking station (docking station sold separately).
Technical Specifications
- Type: Digital wireless transmitter (Bodypack)
- Frequency Band: H51 (534–598 MHz)
- Audio Input Connector: 4-pin mini Male connector (TA4M / TQG)
- Input Impedance: 1 MΩ
- RF Output Power: 1 mW or 10 mW (selectable)
- Operating Range: Up to 100 meters (line of sight)
- Power Supply: 2 x AA alkaline batteries or Shure SB900B Li-ion rechargeable battery
- Dimensions (Height x Width x Depth): 86 x 65 x 23 mm
- Weight: Approximately 138 g (without batteries)
Package Contents
- 1 x Shure QLXD1-H51 Bodypack Transmitter
- 2 x AA alkaline batteries
- 1 x Zippered pouch
- 1 x User documentation
Intended Use
- Musicians (guitarists, bassists, wind instrumentalists).
- Presenters and actors (when used with lavalier or headset microphones).
- Events requiring a high level of security (encryption).
- Users with QLX-D H51 receivers.

