Sennheiser 509545

Overview

The Sennheiser 509545 is a wireless plug-on transmitter designed to deliver professional audio performance in a compact and durable form. Operating within a UHF frequency range of 470 to 558 MHz, it offers up to 32 channels across an 88 MHz bandwidth, ensuring stable and interference-free sound transmission. This transmitter supports both dynamic and condenser microphones with switchable 48V phantom power, making it versatile for various audio setups in film production, live events, and presentations.

Equipped with a backlit LCD display, it provides real-time information on frequency, audio levels, battery life, and channel status, allowing easy monitoring during use. With a transmission range of up to 330 feet and adjustable RF output power settings of 10, 30, or 50 mW, it adapts well to different venue sizes and environments. The unit runs for approximately 8 hours on two AA batteries, with an option for extended use via a Sennheiser battery pack.

Key features

• Operates within an 88 MHz bandwidth offering up to 32 channels to minimize interference in crowded RF environments
• Transmission range up to 330 feet allows flexible placement and mobility during performances or recordings
• Switchable 48V phantom power supports both dynamic and condenser microphones for versatile audio input options
• Adjustable RF output power at 10, 30, or 50 mW to optimize signal strength based on venue size and distance
• Backlit LCD display provides clear, real-time feedback on frequency, audio levels, battery status, and channel information
• Built-in HDX compander technology reduces noise and enhances signal-to-noise ratio for clear, professional sound quality
• Compact and rugged design built to withstand the demands of professional use in various environments

Key specs

• Frequency range: 470 to 558 MHz (UHF band)
• Channel capacity: up to 32 channels within 88 MHz bandwidth
• Transmission range: up to 330 feet (100 meters)
• RF output power: selectable 10 mW, 30 mW, or 50 mW
• Power supply: two AA batteries providing approximately 8 hours of operation
• Phantom power: switchable 48V for condenser microphone support
• Display: backlit LCD showing frequency, audio level, battery life, and channel status

Connectivity and compatibility

This transmitter pairs seamlessly with compatible Sennheiser receivers and handheld microphones, offering flexibility in configuring your wireless audio system. Its support for both dynamic and condenser microphones broadens the range of compatible audio sources, making it suitable for diverse professional applications.

Performance and reliability

The adjustable RF output power allows you to tailor the transmitter’s signal strength to your environment, whether you are working in a small studio or a large auditorium. The HDX compander technology effectively reduces noise and improves the signal-to-noise ratio, ensuring your audio remains clear and consistent throughout your session. Its durable construction withstands the rigors of professional use, providing dependable performance in demanding settings.

Ideal uses and environments

This wireless plug-on transmitter is well suited to film production crews, live stage performers, and presenters who require reliable, high-quality audio transmission. Its flexible channel selection and robust signal range make it a strong choice for venues with busy RF environments or where mobility and clear sound are critical. Professionals who need a versatile and easy-to-monitor wireless solution will find this transmitter meets their needs effectively.

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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, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

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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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