Sennheiser 509666

Overview

The Sennheiser 509666 is a wireless headset microphone system designed to provide clear and reliable audio for presentations, lectures, and professional events. It features the SL Headmic 1 omnidirectional microphone, which captures natural speech while remaining lightweight and comfortable for extended wear. The system includes a bodypack transmitter and a rackmount receiver, offering a transmission range of up to 330 feet and supporting up to 32 channels within an 88 MHz bandwidth, making it suitable for complex multi-channel setups in larger venues.

Key features

• Omnidirectional headset microphone that delivers clear and natural speech for hands-free communication
• Bodypack transmitter with remote control for convenient adjustments during use without interrupting the performance
• Transmission range of up to 330 feet, allowing freedom of movement across stages or rooms
• Supports up to 32 channels within an 88 MHz bandwidth, enabling flexible multi-system operation in busy environments
• Compatibility with Sennheiser Control Cockpit and Wireless Systems Manager software for real-time monitoring and management
• Durable all-metal rackmount receiver designed to withstand frequent professional use and ensure long-term reliability

Key specs

• Microphone type: SL Headmic 1 omnidirectional headset
• Transmission range: up to 330 feet (100 meters)
• Bandwidth: 88 MHz
• Number of channels supported: up to 32
• Transmitter type: SK 300 G4-RC bodypack with remote control
• Receiver type: EM 300-500 G4 rackmount, all-metal construction

Connectivity and compatibility

This system integrates seamlessly with professional audio setups, offering compatibility with Sennheiser’s Control Cockpit and Wireless Systems Manager software. These tools provide users with the ability to monitor signal strength, battery status, and channel management in real time, which is essential for maintaining smooth operation during live events or presentations. The rackmount receiver fits easily into standard audio racks, making it a practical choice for fixed installations or touring setups.

Ideal uses and environments

The wireless headset microphone system is well suited to speakers, trainers, educators, and event professionals who require hands-free, high-quality audio transmission. Its long transmission range and multi-channel support make it a strong choice for larger venues, conference rooms, classrooms, and corporate events where multiple wireless systems may be in use simultaneously. The lightweight microphone ensures comfort during extended wear, supporting clear communication without distraction.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, and include all tags, manuals, accessories, and original, unaltered packaging. To start a return, please email us for approval. Items sent back without approval may be refused or returned to the sender. If any item is kept, its value will be deducted from the refund.

Non-returnable items include opened TVs, combos, or monitors 37″ or larger, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method. Please allow 5–7 business days for the credit to post. Shipping and handling are nonrefundable. If an item is used, incomplete, or not in its original condition, a 30% restocking fee may apply. Direct exchanges are not offered. To exchange an item, please purchase the replacement separately and return the original for a refund.

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We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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