Sennheiser 509654

Overview

The Sennheiser 509654 is the EM 100 G4 True Diversity Wireless Receiver, a professional-grade audio receiver designed to deliver reliable wireless sound for performers, presenters, and audio engineers. It features a 42 MHz tuning range with 1,680 selectable UHF frequencies, allowing up to 20 compatible systems to operate simultaneously without interference. With a wireless range of up to 300 feet and a signal-to-noise ratio of 110 dBA, it ensures clear and stable audio transmission in demanding environments.

Key features

• True diversity reception continuously compares two independent signals to minimize dropouts and maintain a strong connection.
• Infrared synchronization allows quick and effortless pairing of transmitters and receivers by simply holding the transmitter in front of the receiver.
• Backlit LCD screen provides intuitive navigation through menus for channel scanning, frequency selection, and output level adjustments.
• Robust metal chassis designed to fit into a half-rack space or sit securely on a desktop, built to withstand the rigors of touring and daily use.
• Balanced XLR and unbalanced 6.3 mm outputs offer flexible connectivity options for mixers, audio interfaces, and powered speakers.
• BNC antenna ports support remote or cascaded antenna setups, enabling expanded coverage for larger or more complex installations.
• Supports operation of up to 20 compatible wireless channels simultaneously, ideal for multi-mic setups in live performances or events.

Key specs

• Tuning bandwidth: 42 MHz
• Selectable UHF frequencies: 1,680
• Maximum wireless range: approximately 300 feet (100 meters)
• Signal-to-noise ratio: 110 dBA
• Outputs: balanced XLR and unbalanced 6.3 mm jack
• Antenna connectors: BNC
• Form factor: half-rack metal housing

Connectivity and compatibility

This receiver integrates seamlessly into professional audio setups with its balanced XLR output, which ensures low-noise, high-quality signal transmission to mixers or recording devices. The unbalanced 6.3 mm output provides additional flexibility for connecting to powered speakers or other audio equipment. BNC antenna connectors allow for enhanced antenna configurations, making it suitable for venues requiring extended range or complex wireless setups.

Performance and reliability

The true diversity technology significantly reduces signal dropouts by constantly selecting the strongest signal between two independent receivers. This ensures consistent audio quality even in environments crowded with radio frequency signals. The unit’s sturdy metal construction protects it during transport and daily use, making it a dependable choice for touring bands, corporate events, and broadcast studios alike.

Ideal uses and environments

The EM 100 G4 is well suited to live performances, corporate presentations, houses of worship, and broadcast applications where multiple wireless channels are needed simultaneously. Its long wireless range and robust signal quality make it a strong choice for large stages and venues where performers or speakers need freedom of movement without compromising audio clarity.

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.

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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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