Shure BLX14R/SM35 Wireless Rack-mount Headset System with SM35 Headset Microphone

Experience professional-grade wireless audio with the Shure BLX14R/SM35, a rugged, rack-mountable two-channel headset system designed for performers, presenters, educators, and worship teams. This bundle combines the stability of a dual-channel BLX receiver with the comfort and clarity of the SM35 headset microphone, delivering dependable RF performance, natural vocal reproduction, and streamlined operation in a compact 19" chassis. Whether you’re on a crowded stage, delivering a keynote, or teaching a roomful of students, this system makes wireless sound effortless, unobtrusive, and reliable every time you switch it on. The BLX14R/SM35 is built to endure demanding live environments, while remaining easy to set up and quick to deploy, so you can focus on your performance, speech, or lesson rather than troubleshooting signal issues.

• Two-channel rack-mount receiver in a sturdy 19" enclosure: This system consolidates dual wireless channels into a single, transportable solution, enabling seamless switching between two headset or lavalier configurations. The BLX14R receiver provides independent control for each channel, enabling reliable multi-mic setups for dynamic stage performances, panel discussions, or classroom presentations while keeping the gear organized and out of sight in a standard rack.
• SM35 headset microphone included for hands-free comfort and clarity: The SM35 is a lightweight, comfortable headset mic with a cardioid pickup pattern that stays close to the mouth for consistent vocal transfer, minimizing breath and handling noise. Its low-profile design accommodates long-wear use during rehearsals, fitness sessions, or long presentations, and its tonal balance works well with most vocal styles, delivering crisp intelligibility and natural presence across a range of voice dynamics.
• Professional audio quality and robust RF performance: Built on Shure’s proven wireless platform, this system delivers clean, transparent sound with low self-noise and high headroom, so performances retain their nuance even in challenging acoustic environments. The RF design provides reliable tracking and anti-interference features to help maintain solid signal integrity in venues with competing wireless devices, stage monitors, and crowded RF spectra.
• Simple setup and reliable operation: The BLX14R/SM35 is designed for quick, repeatable installations. Frequency coordination and auto-scanning help you locate open channels, and the front-panel controls give you intuitive, fast access to gain, input levels, and mute functions. The system integrates smoothly with standard mixers and PAs, enabling straightforward routing to XLR or line-level inputs while preserving the dynamic range of your performances.
• Versatile across applications: Whether you’re touring, teaching, hosting corporate events, running worship services, or leading fitness classes, this wireless headset system endows you with freedom of movement and dependable audio reproduction. The headset mic stays attached as you move, ensuring consistent voice pickup during transitions, choreography, or large-room coverage, and the rack-mount design keeps your rig tidy and secure backstage or on a live mixer setup.

Technical Details of Shure BLX14R/SM35 Wireless Rack-mount Headset System

• System type: Wireless headset system with a dual-channel rack-mount receiver (BLX14R) and included SM35 headset microphone
• Microphone: SM35 headset microphone with cardioid pickup pattern for focused voice clarity
• Transmitter compatibility: Requires compatible Shure wireless transmitters for headset operation (e.g., BLX1/BLX2 or other BLX-series transmitters); transmitters are not always included in every SKU
• Frequency range: UHF-based system with multiple frequency bands available; specifics vary by region and SKU; optimal performance depends on proper frequency coordination
• Receiver features: 19" rack-mount dual-channel receiver with status indicators for RF and audio, and front-panel controls for easy access to gain and pairing
• Connectivity: Outputs via standard XLR or 1/4" connections to mixers or PA systems; headset mic connection via 4-pin mini-XLR to the transmitter (not directly to the receiver)
• Power and durability: Universal AC input with included power supply; rugged metal chassis designed for frequent transportation and stage use

How to install Shure BLX14R/SM35 Wireless Rack-mount Headset System

• Unpack and inspect: Confirm you have the BLX14R rack-mount receiver, SM35 headset microphone, power supply, and any mounting hardware appropriate for your region. Inspect all components for any shipping damage before installation.
• Mount the receiver in a rack: Use the included rack ears to secure the BLX14R in a standard 19" rack. Ensure there is adequate ventilation around the unit and that it is accessible for front-panel adjustments and syncing.
• Connect antennas and power: Attach the supplied antennas to the receiver’s antenna ports if included, and connect the power supply to a clean, grounded AC outlet. Verify power is stable and that the rack is properly grounded to minimize hum and RF noise.
• Route audio to your sound system: Connect the receiver’s audio outputs to your mixer or PA system using balanced XLR or appropriate line-level connections. Set initial input gains conservatively and plan to adjust during soundcheck to avoid clipping or excessive noise.
• Prepare the mic and headset: Fit the SM35 headset microphone to the performer’s head for a comfortable and secure fit. Position the microphone just in front of the mouth for optimal noise rejection and consistent pickup, adjusting tension as needed to stay in place during movement.
• Sync transmitters and select a channel: Power on the transmitter(s) and use the BLX14R front-panel sync function to pair the microphone with the receiver. Run a quick scan to locate clean frequencies, then test with a live voice, adjusting mic gain and receiver settings to achieve clear, natural sound without distortion.
• Finalize and test: Conduct a thorough soundcheck with the performer, confirming consistent voice pickup, comfortable head placement, and reliable wireless range across the intended performance area. Document the selected frequencies for future reference and note any environmental RF changes that might require a re-scan.

Frequently asked questions

• Q: What is included in the BLX14R/SM35 package? A: The package typically includes the dual-channel BLX14R rack-mount receiver, the SM35 headset microphone, power supply, and installation hardware. Some SKUs may vary by region and may include additional accessories or alternative transmitters; verify the contents with your regional reseller.
• Q: Can I use the SM35 headset with other BLX transmitters? A: Yes. The SM35 headset is designed to work with compatible BLX-series wireless transmitters via the headset’s 4-pin mini-XLR connector, enabling flexible pairing with bodypack or handheld units depending on your setup.
• Q: Is this system suitable for large venues or classrooms? A: Absolutely. The BLX14R/SM35 is intended for a wide range of environments, from intimate stages to large rooms. Its dual-channel design and reliable RF performance help maintain strong audio in diverse spaces, provided proper frequency coordination and line-of-sight are maintained.
• Q: Do I need special training to operate the system? A: Not necessarily. The BLX14R/SM35 is designed for straightforward operation with intuitive controls, but it is recommended to perform a thorough soundcheck, understand impedance and level matching with your mixer, and practice syncing transmitters to prevent interference or channel clashes during events.
• Q: How do I avoid interference and dropouts? A: Use the receiver’s frequency scanning and select clear channels, position antennas to maximize line-of-sight, and keep transmitters within the recommended range of the receiver. In RF-dense environments, rotating to different frequency bands and ensuring that all devices are within legal operating parameters can significantly reduce interference.