Shure QLXD2/KSM9B K51

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Shure QLXD2/KSM9B K51

Shure

QLXD2/KSM9B K51

4.4 Expert Rating

Product Info

Article Number: 585737
Brand: Shure
Model: QLXD2/KSM9B K51
Category: Transmitters
Price: $1,197.90

* Prices may vary. Check retailer for current pricing and availability.

This Shure QLXD2/KSM9B K51 is a serious tool for vocalists needing rock-solid wireless performance. The KSM9 capsule’s natural sound and the digital transmission offer incredible clarity, and the encryption provides peace of mind. It’s ideal for professional touring artists or venues demanding top-tier reliability.

Product Description

  • Shure QLXD2/KSM9B K51
  • Digital UHF Handheld Transmitter
  • Frequency band: K51 (606 - 670 MHz)
  • With SM9 condenser capsule
  • 24 Bit / 48 kHz audio signal
  • AES-256 encryption for tap-proof transmission
  • Up to 72 MHz switching bandwidth
  • 22 Compatible channels in an 8 MHz TV band
  • Switchable transmission power: 1/10 mW
  • 120 dB Dynamic range
  • Metal handheld transmitter with KSM9 condenser microphone capsule
  • Polar pattern switchable: cardioid/supercardioid
  • Frequency transmission via infrared interface
  • Transmitter operation with 1.5 V AA batteries - optionally also with SB 900A lithium-ion battery
  • Includes bag and microphone mount
PROS
  • • KSM9 capsule delivers exceptional clarity and detail for vocals.
  • • QLXD2 digital transmission ensures clean, interference-free audio.
  • • AES-256 encryption offers robust security for sensitive performances.
  • • Rugged metal build and KSM9 capsule inspire confidence onstage.
CONS
  • • The unit is relatively heavy, potentially fatiguing for extended use.
  • • The K51 frequency band might require coordination in crowded RF environments.
  • • Premium-priced, representing a significant investment for many performers.

Product Video

Key Features

Type Digital UHF Handheld Transmitter
Frequency Band K51 (606 - 670 MHz)
Channels 22
Power 1/10 mW (switchable)
Battery Life Approximately 8 hours with AA batteries, longer with SB 900A lithium-ion
Connector Infrared Interface

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Frequently Asked Questions

Infrared syncing is faster and more reliable than RF, preventing conflicts and simplifying setup, particularly in environments with numerous wireless systems.
Yes, the KSM9 capsule is a standard Shure component and is readily available for replacement, though it's a premium-priced item.
The QLXD2 system is proprietary; it’s designed to work exclusively with other QLXD2 receivers, ensuring compatibility and access to the full feature set.

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