Shure QLXD2/KSM9 — Handheld Wireless Transmitter with KSM9 Capsule
QLXD2/KSM9 Overview
The Shure QLXD2/KSM9 is a professional handheld wireless transmitter pairing the QLXD2 body with the renowned KSM9 interchangeable microphone capsule for transparent vocal reproduction. Operating in the J50A band (572-616 MHz), it delivers 24-bit digital audio quality with highly efficient RF spectrum usage suited to congested RF environments. The transmitter maintains clear, uninterrupted signal over a range of 100 m (330 ft.), making it a reliable choice for audio engineers, system integrators, and technical directors in music venues, houses of worship, and corporate presentation spaces. All-metal construction provides the durability required for touring and permanent installation alike.
IR sync with a compatible QLXD receiver streamlines setup and frequency coordination, reducing deployment time in multi-channel configurations.
Key Features
- 24-Bit Digital Audio — Transparent signal path with no companding artifacts, preserving the full character of the KSM9 capsule
- KSM9 Interchangeable Capsule — Legendary Shure condenser capsule optimized for lead vocals, delivering consistent off-axis rejection and detailed high-frequency response
- J50A Band Operation (572-616 MHz) — Efficient RF spectrum usage designed for reliable performance in dense wireless environments
- 100 m (330 ft.) Operating Range — Maintains clear, uninterrupted signal throughout the full operating range
- IR Sync — One-button infrared sync to compatible QLXD receivers accelerates frequency coordination and system setup
- All-Metal Construction — Built to withstand the rigors of live performance and touring applications
- Interchangeable Capsule System — Compatible with a wide selection of Shure microphone capsules, allowing sound signature flexibility across applications

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