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RPK 006 Dual Rack Mount Kit for 1/2 space products
RPK 006 Dual Rack Mount Kit for 1/2 space products

Infinium Flex Bundle | FM, Wi-Fi, & Auracast Broadcast Audio

Auracastā„¢, FM Transmitters

BA-SYS4

One Flexible Bundle. More Ways to Listen.

The InfiniumĀ® Flex Bundle brings together two proven assistive listening solutions in one convenient package: the FM+ T55C D transmitter and the Infinium CT1 controller and transmitter. Together, they deliver FM, Wi-Fi, and Auracastā„¢ broadcast audio, allowing venues to accommodate guests using venue-provided receivers, smartphones, hearing aids, cochlear implants, earbuds, headphones, and Auracast compatible receivers. Both systems include DanteĀ® connectivity for seamless integration into modern AV environments. Both are also Dante AES67 compliant and compatible with all three Dante Domain Manager (DDM) tiers, Silver, Gold, and Platinum, so IT and AV teams can interoperate with other AES67-compatible professional audio equipment and manage the entire bundle, FM+ T55C-D and Infinium CT1 alike, from a single interface.

Designed for venues that want to offer more listening choices, the Infinium Flex Bundle helps venues support a broad range of accessibility needs and listening preferences. Both the FM+ T55C D and Infinium CT1 are designed, engineered, and manufactured in the USA and are TAA compliant, making the bundle perfect for government, higher education, transportation, and other public-sector projects.

*Receivers sold separately. The Infinium Flex Bundle is available only in the Americas, where operation in the 72-76 MHz FM band is permitted.

The Infinium Flex Bundle brings together the FM+ T55C D transmitter and Infinium CT1 controller and transmitter in a single package. Together, they deliver FM, Wi-Fi, and Auracast broadcast audio, giving venues more ways to connect guests.

The FM+ T55C D uses dual-broadcast technology to deliver audio over both FM and Wi-Fi. Guests can listen using a venue-provided FM or Wi-Fi receiver, or stream the Wi-Fi audio directly to their smartphone using the free WaveCASTĀ® app. The Infinium CT1 adds Auracast broadcast audio, enabling direct streaming to compatible hearing aids, cochlear implants, earbuds, headphones, smartphones, and Infinium receivers.

This flexible approach allows venues to accommodate a wide range of listening preferences without requiring guests to use a specific device or technology. Whether someone relies on a dedicated receiver or prefers to use their own compatible device, they can access the audio in the way that works best for them.

Both units include Dante networking for integration with modern AV systems. The included dual rack-mount kit provides a clean, professional installation within a single rack unit.

The Infinium Flex Bundle is ideal for theaters, performing arts centers, houses of worship, conference centers, lecture halls, universities, government facilities, transportation hubs, and other public venues seeking a flexible assistive listening solution.

AES67 & Native DanteĀ® Integration: Both the FM+ T55C D and Infinium CT1 in this bundle are Dante AES67 compliant, so they connect natively with Dante devices and interoperate with other AES67-compatible professional audio equipment, giving integrators more flexibility to build mixed-brand systems without extra hardware.

Enterprise-Ready with Dante Domain Manager: Both the FM+ T55C D and Infinium CT1 in this bundle work with all three Dante Domain Manager tiers, Silver, Gold, and Platinum, giving IT and AV teams secure, login-based permissions, room-by-room device grouping, and the ability to manage and scale the system across an entire building or campus from one place.

For complete specifications and feature details, visit the FM+ T55C D and Infinium CT1 product pages.

Receivers are sold separately.

System Includes

(1) FM T55C D FM and Wi-Fi Transmitter with Dante
(1) BA CT1 Infinium Auracast Controller and Transmitter
(1) RPK 006 Dual rack-mount kit for 1/2 space products
(1) ANT 005 remote coaxial antenna
(1) IDP 008 ADA General hearing assistance wall plaque
(1) IDP 018 ADA Auracast hearing Assistance wall plaque

BA-SYS4

Infinium Auracast Controller (BA-C1)

Dimensions 8.45″ W x 8.25″ D x 1.72″ H (21.5 cm x 21 cm x 4.4 cm)
Weight 2.3 lbs (1.04 kg)
Color Black
Installation Rack Mount: Standard 19″ Rack, one EIA space high, 1/2 space wide. 1-2 units per rack space with RPK 005 or RPK 006. Shelf mount available.
Temperature (Operating) +32Ā°F to +122Ā°F (0Ā°C to 50Ā°C)
Temperature (Storage) -4Ā°F to +158Ā°F (-20Ā°C to 70Ā°C)
Power Supply Desktop transformer (TFP 062): 100-240 VAC, 50/60 Hz input; 24 VDC, 750 mA, 18W output; 2.5mm ID center-positive barrel connector
Power Button Push On/Push Off latching with indicator
Ethernet Control Port (1x) RJ-45; supports CAT 5e to 328 feet (100 meters); 10/100 Base-T
Front Panel Display 3.12″ High Resolution OLED with button entry programming
Dante (1x) RJ-45 jack
Networking AES67 Compliant: Yes. Dante Domain Manager (DDM) Compatible: Yes (Silver / Gold / Platinum).
PoE Power Out PoE supported
Compliance FCC, RoHS3, WEEE, Industry Canada/ISED, CE, UKCA, RCM, CB Scheme, AES67
Warranty 2-year parts and labor

Infinium Transmitter (BA-T1)

Dimensions 4.7″ W x 5.0″ D x 1.19″ H (119 mm x 127 mm x 30 mm)
Weight 0.4 lbs (0.18 kg)
Color White
Installation Ceiling mount, wall mount, or shelf
Temperature (Operating) +32Ā°F to +122Ā°F (0Ā°C to 50Ā°C)
Temperature (Storage) -4Ā°F to +158Ā°F (-20Ā°C to 70Ā°C)
Power PoE (input)
Connection RJ45 (1x) with DanteĀ® audio, control, and PoE
Networking AES67 Compliant: Yes. Dante Domain Manager (DDM) Compatible: Yes, as part of an Infinium system (Silver / Gold / Platinum).
Power Indicator Programmable LED
Transmitter Power Programmable
Compliance FCC, RoHS3, WEEE, Industry Canada/ISED, CE, UKCA, RCM, CB Scheme, Gitecki (Japan), AES67
Warranty 2-year parts and labor

 

FM+ C | FM and Wi-Fi Transmitter with Dante (FM T55C D)

NOTE: The FCC requires this device to be used with approved, FCC 15.203 compliant antennas and be professionally installed. Refer to Williams AVā€™s Antenna Selection Install Guide for compliant antennas for this product.

The FM+ C with Dante connects to the installation location’s Wi-Fi Network. It does not provide a network on its own. The Wi-Fi network will need to be installed and established before the FM+ C with Dante can be used.

Audio Inputs (1x) Combination 3-pin XLR, 1/4″ (TRS) jack for balanced or unbalanced line level, or balanced or unbalanced microphone with selectable phantom power. Optional RJ-45 Dante Input (“D” models only).

Dimensions 8.45″ W x 8.25″ D x 1.72″H (21.5 cm x 21 cm x 4.4 cm)
Weight Transmitter: 3.2 lbs (1.45 kg)
Color Black
Rack Mount Standard 19ā€ Rack, one EIA rack space high, 1/2 space wide
1ā€“2 units can be mounted in a single rack space with optional RPK 005 (single) or RPK 006 (double) Rack Mount Kits
Power Supply Desktop Style Transformer (TFP 062); Input: 100-240 VAC, 50/60 Hz. IEC Line Cord; Output: 24 VDC, 750 mA, 18W. 2.5mm ID center positive barrel connector
Power ON Indicator Push On/Push Off latching power button with backlight. Green backlight indicates power ON, backlight off indicates power OFF.
Temperature Range Operating: +32Ā° F to +122Ā° F (0Ā° C to 50Ā° C); Storage: -4Ā° F to +158Ā° F (-20Ā° C to 70Ā° C)
User Interface 1. 3.12ā€ High Resolution OLED display with selections via buttons. 2. Hosted Web page. 3. Telnet commands over ethernet (see our WaveCAST and FM+ Programmers Guide” for available commands and protocol).
Dante (1x) RJ-45 jack. Only available on FM T55C D
Networking AES67 Compliant: Yes. Dante Domain Manager (DDM) Compatible: Yes, as part of an Infinium Flex Bundle (Silver / Gold / Platinum).
Ethernet RJ-45 on back of unit supports CAT 5e cable lengths up to 328 feet (100 meters); 10/100 Base-T IEEE 802.3 compliant, unique MAC address. RJ-45 jack used for web page and streaming audio out. An external Router/DHCP Server is required to stream audio to receiving devices.
RF Section
Operating Frequencies 72.1-75.9 MHz , 17 wideband channels (selectable)
Frequency Accuracy Ā± 2 ppm stability, 0-50Ėš C
Deviation Ā± 75 kHz maximum
Pre-Emphasis 75 microsec
RF Field Strength Does not exceed 80 mV/m at 3 m
Compatible Antennas ANT 005, ANT 021, ANT 024, ANT 025, ANT 028, ANT 029, ANT 034

Refer to Williams AVā€™s Antenna Selection Install Guide for FCC-compliant antennas for this product.
Transmission Range Up to 1000 ft (304 m) with ANT 005 coaxial antenna mounted on rear chassis F-connector
RF Outputs (1x) #10-32 stud connector in center of unit (pcb mounted)
(1x) F-connector on rear chassis
RF Transmit (RF) Power Indicator 1 OLED On Air Indicator with 4 states indicating power level Off, Low, Medium, and Full Power.
RF Time Out (sleep mode) 30 min. duration, 4 hr. duration, or Always On; selected via web page. When audio drops below -18dB, the selected duration begins, and when it expires the unit stops transmitting and goes into a low-power (“sleep”) mode. Any button press or resumption of audio above -18dB “awakens” the unit and it begins transmitting again.
Audio Section
Audio Inputs (1x) Combination 3-pin XLR, 1/4ā€ (TRS) jack for balanced or unbalanced line level, or balanced or unbalanced microphone with selectable phantom power. Optional RJ-45 Dante Input (ā€œDā€ models only).
Audio Processor Functions DSP based; Compression: 1:1, 1.5:1 or 2:1; High-pass and Low-pass Filter Frequency control, Music, Voice, and Hearing Assistance Audio Presets
Frequency Response 31-16000 Hz, Ā±3 dB (re: 1 kHz) (ā€œMusicā€ Audio Preset)
Signal-to-Noise Ratio 64 dB (typical) Transmitted RF @ 1kHz
Total Harmonic Distortion Less than 0.25% @ 1 kHz (RF output)
Common Mode Rejection Greater than 57 dB @ 1 kHz, Mic or Line mode
Audio Input Gain Adjust Adjustable from +24dB to -60 dB, in 1dB steps from front screen or web page
Phantom Power 14.4 VDC applied through 2.2 kOhms resistors to analog combo jack: Pin 2 and Pin 3 on XLR jack, or tip and ring on 1/4″ TRS jack
Audio Level Display Front screen bar graph display, each segment representing 3dB. It ranges from -18 (1 segment lit) to +12dB (10 segments lit). Over-range warning is indicated by ‘OLVD’ and flashing empty bar.
Headphone Output 1/4″ TRS stereo jack, mono signal, 7.8 mW total power with 33 Ī©.
Dante Output (1x) RJ-45 jack
Input Level (Bal or Unbal) (at Audio Input Gain = 0dB)
Nominal (@7th Segment Lit) Overload Warning (Displayed on Screen) Absolute Max. Rating*
Microphone
-45 dBV (5.6 mV RMS) -20 dBV (100 mV RMS) +20 dBV (10.0 V RMS)
Line
-8.4 dBV (380 mV RMS) +16 dBV (6.5 V RMS) +20 dBV (10.0 V RMS)
Approvals FCC, RoHS3, WEEE, Industry Canada, AES67
Warranty 2-year warranty against component failure and manufacturing defects. See the Full Warranty statement on the website for details.* Stresses above these ratings may cause permanent damage or degrade reliability.

Warranty

2 Years

How to Use the Williams AV Infinium Design Estimator | AuracastĀ® System Design Tutorial

Tech Tutorial: Infinium Front Panel UI Walkthrough

Infinium Controller WebUI

FM T5C & WaveCAST C | WebUI Walkthrough

  1. What is the Infinium Flex Bundle? The InfiniumĀ® Flex Bundle is an assistive listening package that includes the FM T55C-D FM+ transmitter and the Infinium CT1 controller and transmitter. Together, these systems deliver FM, Wi-Fi, and Auracastā„¢ broadcast audio, giving venues multiple ways to deliver accessible audio to guests.
  2. What products are included in the Infinium Flex Bundle? The Infinium Flex Bundle includes:
    • FM+ T55C D Dual broadcast transmitter (FM and Wi-Fi) with Dante
    • Infinium CT1 controller and transmitter (Auracast) with Dante
    • Dual Ā½-Rack Mount Kit
    • ADA Signage for FM/Wi-Fi and Auracast Assistive Listening Systems

    Receivers and transmitters are sold separately.

  3. Why should I consider the Infinium Flex Bundle? The Infinium Flex Bundle is ideal for venues that need to support multiple assistive listening technologies. It combines two proven Williams AV systems in a single package, allowing guests to listen using handheld receivers provided by the venue for ADA compliance, smartphones for Wi-Fi streams, and compatible hearing aids, cochlear implants, earbuds and headphones. By supporting multiple listening options, venues can accommodate a broader range of accessibility needs and listening preferences.
  4. Who is the Infinium Flex Bundle designed for? The bundle is designed for theaters, performing arts centers, houses of worship, conference centers, lecture halls, universities, government facilities, transportation hubs, and other public venues that want to provide flexible assistive listening options.
  5. What listening technologies does the Infinium Flex Bundle support? The Infinium Flex Bundle delivers FM, Wi-Fi, and Auracast broadcast audio. This allows venues to serve users with venue-provided receivers as well as compatible personal listening devices.
  6. Does the Infinium Flex Bundle support bring-your-own-device (BYOD) listening? Yes. Guests can listen using their own compatible devices. Wi-Fi audio can be streamed to smartphones through the free WaveCASTĀ® app, while Auracast audio can be received on compatible hearing aids, cochlear implants, earbuds, headphones, and smartphones. This gives guests more ways to access audio without requiring a venue-provided receiver.
  7. Does the Infinium Flex Bundle support Auracast? Yes. The Infinium CT1 broadcasts Auracast audio that can be received by compatible hearing aids, cochlear implants, earbuds, headphones, smartphones, and Infinium receivers.
  8. Does the Infinium Flex Bundle support FM receivers? Yes. The FM+ T55C D provides traditional FM assistive listening for guests who use venue-provided FM receivers (sold separately).
  9. Can guests listen using their smartphones? Yes. The FM+ T55C D supports Wi-Fi audio streaming through the free WaveCASTĀ® app, allowing guests to listen using their own smartphones.
  10. Does the bundle include receivers? No. FM, Wi-Fi and Auracast receivers, and compatible personal listening devices are sold separately.
  11. Does the Infinium Flex Bundle include DanteĀ® networking? Yes. Both the FM+ T55C D and Infinium CT1 include Dante connectivity for integration with professional AV networks, and both are Dante AES67 compliant, so they can exchange audio with AES67-compatible equipment from other manufacturers, not just Dante devices, without additional converters.
  12. Is the Infinium Flex Bundle made in the USA? Yes. Both the FM+ T55C D and Infinium CT1 are made in the USA and are TAA compliant.
  13. Is the Infinium Flex Bundle TAA compliant? Yes. Both products included in the bundle are TAA compliant, making them suitable for many government, transportation, and public-sector projects.
  14. Can the Infinium Flex Bundle help support ADA assistive listening requirements? The bundle provides multiple assistive listening technologies that meet ADA requirements, when venues provide the required receivers. The bundle also includes ADA signage, making it easier for venues to promote assistive listening in their location. ADA compliance depends on the overall system design, receiver availability, installation, and venue-specific requirements.
  15. Can the Infinium Flex Bundle be installed in a standard equipment rack? Yes. The included RPK 006 dual rack-mount kit allows the FM T55C D and Infinium CT1 to be mounted side by side within a single rack unit.
  16. Where is the Infinium Flex Bundle available? The Infinium Flex Bundle is available only in the Americas, where the 72-76 MHz FM band is authorized for assistive listening systems.
  17. Does the Infinium Flex Bundle support Dante Domain Manager (DDM)? Yes. Both the FM+ T55C D and Infinium CT1 work with all three DDM tiers, Silver, Gold, and Platinum, so IT and AV teams can manage user access, group devices by room or building, and scale the system across a large facility from a single interface.

Design & Consultant Specs