Williams AV BA-SYS4 Infinium Flex Assistive Listening Bundle

Williams AV BA-SYS4 Infinium Flex Assistive Listening Bundle

The Williams AV BA-SYS4 Infinium Flex Assistive Listening Bundle delivers FM, Wi-Fi, and Auracast broadcast audio from one integrated system. It combines an FM+ transmitter with Dante and an Infinium Auracast controller and remote transmitter, giving venues several ways to provide clear, accessible audio to guests.

The system suits theaters, lecture halls, houses of worship, conference centers, universities, government facilities, and transportation hubs. Guests can listen through compatible venue-provided FM receivers, the WaveCAST smartphone app, Auracast hearing aids, cochlear implants, earbuds, headphones, smartphones, or dedicated Infinium receivers. Receivers remain separately available, allowing integrators to configure quantities for each venue.

Both primary systems provide Dante connectivity for professional AV integration. The included rack kit mounts the FM and Infinium controllers side by side in one rack space, while the remote Auracast transmitter installs on a wall, ceiling, or shelf. The system is manufactured in the USA, is TAA compliant, and supports accessible system designs when the required receivers and accessories are provided.

Key Features

• Three Listening Technologies: Delivers FM, network-based Wi-Fi audio, and Bluetooth LE Auracast broadcasts from one bundled system.
• Flexible Listener Access: Supports compatible dedicated receivers, smartphones, hearing aids, cochlear implants, earbuds, and headphones.
• Dante AV Integration: Provides Dante connectivity on the FM+ transmitter and Infinium controller for networked professional audio systems.
• WaveCAST Smartphone Listening: Streams real-time audio through an established venue Wi-Fi network and the compatible mobile application.
• Scalable Auracast Management: The Infinium controller can configure, monitor, and manage up to 150 compatible transmitters.
• Single-Cable Remote Transmitter: Carries Auracast audio, control, status, and PoE power over one CAT5e connection.
• One-Rack-Space Installation: The included dual rack-mount kit positions both half-rack controllers side by side in a standard 19-inch rack.
• Accessibility Signage Included: Provides separate general hearing-assistance and Auracast wall plaques for visible system identification.

Technical Specifications

Bundle Configuration

• Brand: Williams AV
• Product Series: Infinium Flex
• Model: BA-SYS4
• Manufacturer Part Number: BA-SYS4-00
• Product Type: FM, Wi-Fi, and Auracast assistive listening bundle
• Supported Broadcast Technologies: 72-76 MHz FM, WaveCAST Wi-Fi audio, and Bluetooth LE Auracast
• Audio Networking: Dante
• Receiver Inclusion: Receivers are sold separately
• Regional Availability: Americas
• Rack Configuration: Two half-rack controllers mounted side by side in one standard 19-inch, 1U rack space
• Country of Manufacture: USA
• TAA Compliance: Yes

FM+ T55C D FM and Wi-Fi Transmitter

• Broadcast Modes: Simultaneous FM and Wi-Fi audio from one input source
• FM Frequency Range: 72.1-75.9 MHz
• FM Channels: 17 selectable wideband channels
• Maximum FM Range: Up to 1000 feet with the included ANT 005 remote coaxial antenna under appropriate installation conditions
• Frequency Accuracy: +/-2 ppm from 32 to 122 degrees Fahrenheit
• Maximum Deviation: +/-75 kHz
• Pre-Emphasis: 75 microseconds
• RF Field Strength: Does not exceed 80 mV/m at 9.8 feet
• RF Connections: One #10-32 stud connector and one rear F-connector
• RF Power Indication: OLED indicator with Off, Low, Medium, and Full Power states
• RF Sleep Settings: 30 minutes, four hours, or always on
• Analog Audio Input: One combination three-pin XLR and 1/4-inch TRS input
• Input Compatibility: Balanced or unbalanced microphone and line-level signals
• Phantom Power: 14.4V DC
• Audio Input Gain: +24 to -60 dB in 1 dB increments
• Dante Connection: One RJ45 connection on the FM T55C D model
• Ethernet Connection: 10/100BASE-T RJ45 for web control and streaming audio
• Maximum Ethernet Cable Length: 328 feet with CAT5e cable
• Network Requirement: Requires an established external network and router or DHCP server for Wi-Fi streaming
• User Interfaces: Front-panel controls, hosted web interface, and Ethernet Telnet commands
• Front Display: 3.12-inch high-resolution OLED
• Audio Processing: DSP with 1:1, 1.5:1, and 2:1 compression
• Filters: Adjustable high-pass and low-pass filters
• Audio Presets: Music, Voice, and Hearing Assistance
• Frequency Response: 31 Hz-16 kHz, +/-3 dB with the Music preset
• Signal-to-Noise Ratio: 64 dB typical through the transmitted FM signal at 1 kHz
• Total Harmonic Distortion: Less than 0.25% at 1 kHz through the RF output
• Common-Mode Rejection: Greater than 57 dB at 1 kHz in microphone or line mode
• Headphone Output: 1/4-inch TRS jack with mono audio
• Headphone Output Power: 7.8 mW total into 33 ohms
• Dimensions: 8.5 x 8.3 x 1.7 inches W x D x H
• Weight: 3.2 lb
• Color: Black
• Power: 24V DC, 750 mA, 18W
• Power Supply Input: 100-240V AC, 50/60 Hz

Infinium BA-C1 Auracast Controller

• Controller Type: Rack-ready Auracast audio controller
• Transmitter Management: Centralized configuration and monitoring for up to 150 compatible transmitters
• Management Interface: Front-panel controls and hosted web interface
• Front Display: 3.12-inch high-resolution OLED
• Analog Inputs: Combination XLR and 1/4-inch microphone or line input with terminal-block audio connections
• Audio Output: 1/4-inch headphone and monitoring output
• Dante and PoE Connection: Multipurpose RJ45 for digital audio, transmitter control, and PoE output
• Ethernet Control Port: 10/100BASE-T RJ45
• Maximum Control Cable Length: 328 feet with CAT5e cable
• Audio Processing: Compression, high-pass filtering, low-pass filtering, and selectable audio presets
• Audio Presets: Hearing Assistance, Music, Voice, and Disable
• Dimensions: 8.5 x 8.3 x 1.7 inches W x D x H
• Weight: 2.3 lb
• Color: Black
• Installation: Half-rack mount, shelf, table, or podium
• Power: 24V DC, 750 mA, 18W
• Power Supply Input: 100-240V AC, 50/60 Hz

Infinium BA-T1 Auracast Transmitter

• Wireless Technology: Bluetooth 5.4 Low Energy Auracast
• Operating Frequency: 2.4-2.4835 GHz
• Audio Streams: Two independent mono streams or one stereo stream
• Supported Sample Rates: 16, 24, and 48 kHz
• Audio Codec: LC3
• Dedicated Receiver Latency: Less than 40 milliseconds
• Broadcast Security: Open or password-protected channels
• Encryption: AES128-CCM with a 128-bit key
• Connection: One RJ45 for audio, control, device status, firmware updates, and PoE input
• Transmitter Power: Programmable
• Status Indicator: Programmable LED
• Installation: Ceiling, wall, or shelf mounting
• Dimensions: 4.7 x 5 x 1.2 inches W x D x H
• Weight: 0.4 lb
• Color: White
• Power: PoE from the Infinium controller

Environmental and Regulatory Specifications

• Controller Operating Temperature: 32 to 122 degrees Fahrenheit
• Controller Storage Temperature: -4 to 158 degrees Fahrenheit
• Transmitter Operating Temperature: 32 to 122 degrees Fahrenheit
• Transmitter Storage Temperature: -4 to 158 degrees Fahrenheit
• FM+ Approvals: FCC, RoHS3, WEEE, and Industry Canada
• Infinium Approvals: FCC, RoHS3, WEEE, Industry Canada/ISED, CE, UKCA, RCM, and CB Scheme
• Installation Requirement: The FM transmitter requires professional installation with an approved FCC 15.203-compliant antenna

What's In the Box

• Williams AV FM T55C D FM and Wi-Fi transmitter with Dante
• Williams AV BA-C1 Infinium Auracast controller
• Williams AV BA-T1 Infinium Auracast transmitter
• 10-foot CAT5e Ethernet cable
• RPK 006 dual rack-mount kit for half-rack products
• ANT 005 remote coaxial antenna
• IDP 008 general hearing-assistance wall plaque
• IDP 018 Auracast hearing-assistance wall plaque