Williams Sound FM+ C Wi-Fi and FM Assistive Listening System, 72-76MHz

SKU: WSFMT55C00 MFR: FM T55C-00
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Key Features

  • Experience crystal-clear audio with this FM assistive listening system, perfect for presentations.
  • Enhance communication in classrooms or meetings using this reliable FM and Wi-Fi transmitter.
  • Ensure everyone hears with exceptional sound quality, thanks to the wideband FM channels.
  • Enjoy flexible connectivity with XLR/TRS inputs, ideal for various audio sources and setups.
  • Easily manage settings via the intuitive OLED display or web interface for seamless control.
  • Reach audiences up to 1000 feet away, making it perfect for large venues needing audio solutions.
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Williams Sound FM+ C Specifications

  • Color

    Black

  • Mounting

    Standard 19" (48.26cm) rack (EIA), 1 rack space high, 1/2 space wide
    Mount 1-2 units in a single rack space using optional rack kits:
    RPK 005 (single unit)
    RPK 006 (dual units)

  • Power Supply

    Desktop-style transformer (Model: TFP 062)

  • Input

    100-240 VAC, 50/60 Hz

  • Output

    24 VDC, 750 mA (18W)

  • Connector

    2.5mm ID center-positive barrel

  • Power Indicator

    Latching push button with green backlight
    Green: Power ON
    Off: Power OFF

  • Environmental

    Operating Temperature: 32 Degree F to 122 Degree F (0 Degree C to 50 Degree C)
    Storage Temperature: -4 Degree F to 158 Degree F (-20 Degree C to 70 Degree C)

  • Ethernet

    RJ-45 (rear)
    CAT 5e up to 100 meters (328 feet)
    10/100 Base-T, IEEE 802.3 compliant
    Supports web interface and streaming audio output
    Requires external router/DHCP server for audio streaming

  • Display

    3.12" (7.93cm) High-Resolution OLED

  • Control Interfaces

    OLED display with front panel buttons
    Web interface
    Telnet via Ethernet

  • Operating Frequency

    72.1 - 75.9 MHz (17 selectable wideband channels)

  • Frequency Accuracy

    +/-2 ppm 32-122 Degree F (0-50 Degree C)

  • Deviation

    +/-75 kHz max

  • Pre-Emphasis

    75 microsec

  • Field Strength

    <= 80 mV/m at 3m

  • Transmission Range

    Up to 1000' (304m) with ANT 005 antenna

  • RF Outputs

    1x #10-32 stud (center-mounted, PCB)
    1x F-connector (rear chassis)

  • Compatible Antennas

    ANT 005, ANT 021, ANT 024, ANT 025, ANT 028, ANT 029, ANT 034

  • RF Power Indicator

    OLED with 4 power levels (Off, Low, Medium, Full)

  • Sleep Mode

    Selectable via web (30 min, 4 hr, or Always On)
    Activates when audio drops below -18 dB

  • Audio Inputs

    1x Combination 3-pin XLR / 1/4" TRS jack (mic or line, balanced/unbalanced)

  • Phantom Power

    14.4 VDC via 2.2 k Ohm resistors (XLR pins 2 & 3 or TRS tip & ring)

  • Input Gain

    Adjustable from +24 dB to -60 dB in 1 dB steps (via screen or web)

  • Frequency Response

    31-16000 Hz, +/-3 dB (re: 1 kHz) ("Music" 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 Level Display

    OLED bar graph (-18 dB to +12 dB)
    Overload: 'OVLD' with flashing empty bar

  • Headphone Output

    1/4" TRS stereo jack (mono signal)
    7.8 mW total power into 33 Ohm

  • Audio Input Levels @ 1 kHz

    Microphone
    Nominal (7th Segment Lit): -45 dBV (5.6 mV RMS)
    Overload Warning ("OVLD"): -20 dBV (100 mV RMS)
    Absolute Max: +20 dBV (10.0 V RMS)

    Line
    Nominal (7th Segment Lit): -8.4 dBV (380 mV RMS)
    Overload Warning ("OVLD"): +16 dBV (6.5 V RMS)
    Absolute Max: +20 dBV (10.0 V RMS)

  • Approvals

    FCC, RoHS3, WEEE, Industry Canada

  • Dimensions (W x D x H)

    8.45 x 8.25 x 1.72" (21.5 x 21 x 4.4cm)

  • Weight

    Transmitter: 3.2 lbs (1.45kg)

About Williams Sound FM+ C

FM+ C is the first transmitter of its kind to offer an FM broadcast and Wi-Fi audio broadcast from a single input source. Whether using the FM+ C for assistive listening, language interpretation, or audio description, this "dual broadcast" technology gives users the option of listening to real-time audio stream on their smartphone or tablet using the free WaveCAST receiver app (iOS and Android) or use an available FM receiver from the venue.

The FM+ C has support for Telnet commands via an Ethernet port enabling AV professionals to control and monitor the FM+ C using third-party room Control Centers.

The FM+ C integrates professional WaveCAST Wi-Fi audio server technology into a Williams AV FM assistive listening system and integrates with third-party room systems. AV professionals can control third-party room systems with Telnet commands via Ethernet and end users can listen with either an FM receiver or with their own smartphone (via the WaveCAST Receiver App). Along with this flexibility comes exceptional audio quality, as the FM+ C is built on a professional digital audio (DSP) platform.

The FM+ C is designed to support those who want to use their own smartphones and headphones for a more discreet assistive listening experience. Simplicity is also available for those who want a more traditional assistive listening system with a dedicated FM receiver and headset. Venues no longer need to choose between providing FM or Wi-Fi assistive listening systems. FM+ C supports both the new iOS and Android WaveCAST Receiver Apps - in addition to all of the current and legacy Williams Sound FM receivers operating on the 72-76 MHz bandwidth.

Most settings can be changed via the front panel interface, or the hosted web interface. A remote programming guide is available upon request.

The FM+ C uses the WaveCAST app to provide an easy-to-use, intuitive user interface. It is available in iOS or Android. Listeners easily select channel and volume level once their personal device is connected to the Wi-Fi network. The app does not work on FM Broadcasts.

Williams Sound FM+ C Features

  • Dual FM and Wi-Fi audio broadcast from a single input source
  • Supports smartphone listening via WaveCAST Receiver App on iOS and Android
  • Telnet command support for integration with third-party Control Centers
  • Professional DSP platform ensures high-quality digital audio performance
  • Compatible with all Williams Sound FM receivers on the 72-76 MHz bandwidth

Warranty Information

This product has a limited warranty of 24 months for parts and 24 months for labor.

Product Documents

User Manual

Key Features

  • Experience crystal-clear audio with this FM assistive listening system, perfect for presentations.
  • Enhance communication in classrooms or meetings using this reliable FM and Wi-Fi transmitter.
  • Ensure everyone hears with exceptional sound quality, thanks to the wideband FM channels.
  • Enjoy flexible connectivity with XLR/TRS inputs, ideal for various audio sources and setups.
  • Easily manage settings via the intuitive OLED display or web interface for seamless control.
  • Reach audiences up to 1000 feet away, making it perfect for large venues needing audio solutions.

What's in the box:

  • Williams Sound FM+ C-FM and Wi-Fi Transmitter
  • ANT025 Telescoping Whip Antenna
  • TFP062 Power Supply
  • WLC004 Line Cord
  • Williams Sound 2 Year Limited Warranty