Williams AV FM 558-12 FM+ Large-Area Assistive Listening System Package with (12) R38 Receivers

Ensure every attendee hears clearly across theaters, auditoriums, houses of worship and conference centers with the Williams AV FM 558-12 FM+ large-area assistive listening system. Built for professional AV deployments, this assistive listening solution delivers reliable coverage up to 997.38 ft and a natural 31 Hz–16 kHz frequency response so speech and program audio remain intelligible even at a distance. The package includes twelve R38 receivers with bright OLED displays and long battery life (AA / up to 50 hours with NiMH), making distribution and user operation quick and dependable. Dual FM and Wi-Fi transmission gives you deployment flexibility and improved interference resilience—important for venues that also run security, surveillance or monitoring systems. With XLR inputs for direct integration into existing audio and security infrastructure and ADA-friendly compliance, the FM 558-12 improves accessibility, audience engagement and onsite communications. Backed by environmental certifications and a 2-year warranty, it’s a scalable solution for venues that require professional-grade assistive listening. Elevate accessibility and streamline event monitoring—invest in the Williams AV FM 558-12 FM+ today.

• Ensure clear, intelligible audio for every seat in large venues with coverage up to 997.38 ft
• Dual FM+ and Wi-Fi transmission offers flexible, interference-resistant deployment for events and monitoring
• Includes twelve user-friendly R38 receivers with OLED displays for fast distribution and simple operation
• Wide 31 Hz–16 kHz frequency response preserves speech and program audio for better comprehension
• Easy AV and security integration via XLR inputs, long battery life (AA / up to 50 hr) and scalable listener support