Sennheiser 509542

Overview

The Sennheiser 509542 is a wireless bodypack transmitter designed for professional audio applications within the AW+ frequency range of 470 to 558 MHz. It provides clear and powerful audio transmission with up to 88 MHz of bandwidth and 3520 selectable UHF frequencies, making it suitable for complex multi-channel setups. With a transmission range of up to 330 feet and adjustable RF output power, it ensures stable performance even in environments crowded with wireless signals.

Its robust metal housing and secure locking 3.5 mm input make it reliable for use on stage, in houses of worship, corporate events, or touring. The transmitter runs on two standard AA batteries or an optional rechargeable Accupack, offering up to eight hours of continuous operation. Backward compatibility with earlier evolution wireless systems allows seamless integration into existing setups.

Key features

• Wide 88 MHz tuning range with 3520 selectable UHF frequencies for flexible and interference-free channel planning
• Transmission distance up to 330 feet (100 meters) to support mobility on stage or in large venues
• Adjustable RF output power at 10, 30, or 50 mW to adapt to different RF environments and reduce interference
• Fast and accurate IR sync pairing with compatible receivers for quick setup and reliable connections
• Durable metal housing designed to withstand the rigors of touring, daily stage use, and field applications
• Locking 3.5 mm audio input jack secures lavalier microphones, headsets, or instrument cables to prevent accidental disconnection
• Operates on two standard AA batteries or optional BA 2015 Accupack, providing up to eight hours of continuous use
• Backward compatibility with earlier evolution wireless systems protects existing investments and simplifies upgrades

Key specs

• Frequency range: 470 to 558 MHz (AW+ band)
• Tuning bandwidth: 88 MHz
• Selectable UHF frequencies: 3520
• Transmission range: up to 330 feet (100 meters)
• RF output power: switchable between 10 mW, 30 mW, and 50 mW
• Audio input connector: locking 3.5 mm jack
• Power source: two AA batteries or optional BA 2015 Accupack
• Battery life: up to 8 hours
• Housing: metal chassis for durability

Connectivity and compatibility

This transmitter integrates seamlessly with the Sennheiser evolution wireless G4 500 Series receivers, supporting IR sync for quick pairing. Its locking 3.5 mm input accommodates a variety of microphones and instruments, ensuring secure connections during performances. The backward compatibility with earlier evolution wireless systems allows it to fit into existing setups without compatibility issues, making it a versatile choice for expanding or upgrading wireless audio systems.

Ideal uses and environments

The Sennheiser 509542 is well suited for live performances, theater productions, corporate events, and houses of worship where multiple wireless channels are required. Its long transmission range and adjustable RF power make it effective in challenging RF environments, while the durable metal housing ensures it can handle the demands of touring and frequent use. This transmitter is a strong option for audio engineers and performers who need reliable, high-quality wireless audio transmission with flexible channel management.

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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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