Williams Sound FM 458 Personal PA FM Assistive Listening System (4 Receivers)

Williams Sound FM 458 Personal PA FM Assistive Listening System (4 Receivers)

Williams Sound FM 458 Personal PA FM Assistive Listening System (4 Receivers)

B&H # WIFM458 MFR # FM 458
Special Order
Expected availability: 3-7 business days

Product Highlights

  • Turnkey Assistive Listening System
  • 4 PPA R38N Bodypack Receivers
  • PPA T45 Transmitter
  • 4 EAR 022 Surround Earphones
  • 2 NKL 001 Neckloops
  • Includes All Necessary Accessories
  • High-Quality Audio and RF Performance
  • Multiple Digital Audio Input Options
  • Self-Configuring for Easy Setup
  • OLED Display with Simple Menu Navigation
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Configuration: 4 Receivers

4 Receivers 12 Receivers

Special Order

24 Receivers

Special Order

This item is noncancelable and nonreturnable.

You Pay: $1,438.00

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Williams Sound FM 458 overview

  • 1Description

The Williams Sound FM 458 Personal PA FM Assistive Listening System is a complete turnkey solution designed to help individuals needing auditory assistance or language interpretation overcome background noise, reverberation, and distance from the sound source. It includes a PPA T45 transmitter with multiple digital audio input options and an OLED display with easy-to-manage menu navigation, 4 PPA R38N bodypack receivers, each featuring an OLED display and on-screen channel selection with access to 17 preset frequencies, 4 EAR 022 surround earphones, and 2 NKL 001 neckloops.

Ideal for large-group listening scenarios, the FM 458 provides crystal-clear sound anywhere within an operating range up to 1000'. The system is expandable with additional PPA R38N bodypack receivers (available separately) to accommodate any number of listeners. Also included is an ANT 025 whip antenna, a TFP 048 power supply, a WLC 004 main power cord, a 3' WCA 013 RCA audio cable, 4 2-packs of AA alkaline batteries, and an IDP 008 ADA wall plaque.

Note: This system complies with 2010 ADA guidelines for hearing assistance and is approved by the FCC for operation in U.S. markets.

  • PPA T45 Assistive Listening Transmitter

    The Williams Sound PPA T45 transmitter offers multiple digital audio input options, and an OLED high-resolution screen with simple menu navigation. It features 3 microprocessors and high-quality audio and RF performance, designed to take the guesswork out of complex audio installations. Simply select among voice, music, or hearing assistance in the application preset menu, and this transmitter quickly configures itself. With a range of up to 1000 feet, the PPA T45 is ideal for large venues where superior coverage is essential.

    • Multiple digital audio inputs (AES, SPDIF) provide direct connection to digital signal sources
    • OLED high-resolution screen with simplified menu navigation, offers comprehensive and convenient access to full system functions
    • DSP audio processing
    • Sleek and stylish new design
    • Simple set-up and operation
    • 1000’ operating range
    • OLED display, push-button menus
    • Microprocessor controlled
    • Adjustable RF power output
    • Combo XLR, 1/4” TRS inputs
    • Lifetime PLUS Limited Warranty (90 days on accessories)


  • PPA SelectView FM Receiver

    The Williams Sound PPA SelectView FM Receiver is an FM receiver for assisted listening applications. It features a high-resolution OLED screen that provides a quick view of receiver status and immediate entry to all user settings. The receiver has on-screen channel selection with access to 17 pre-set, wideband frequencies (72 to 76 MHz).

    The PPA SelectView is digitally synthesized to provide audio clarity and stability and also features digital tuning, digital squelch and battery-saving sleep mode. A belt clip is included.

    OLED high-resolution screen provides a quick view of receiver status
    All user settings are accessible via the on-screen menu - including all 17 wideband channels.
    Stereo headphone jack
    Works with rechargeable or non-rechargeable batteries
    Digital volume controls
    4-step battery level indication
    Display shows channel or frequency
    Step/seek function allows user to increment channel manually, or seek to the next active channel
    Sleep Mode/Auto-Off saves battery power
    Soft Audio Turn-On
  • EAR 022 Surround Earphone

    The Williams Sound EAR022 is a single-sided, clip-on earphone ideal for use with personal listening devices. The clip is designed to fully surround the ear for maximum stability and comfort. The monaural 1/8" mini-plug is compatible with a wide variety of devices.

    • Hangs on outside of the ear
    • Plug: 1/8" mono
    • Cord: 3.3'
    • Monaural
    • 32 Ohms
    • Recommended for FM receivers and select IR receivers
    • Designed for individuals with mild and low gain hearing loss
  • NKL 001 Induction Neckloop for T-Switch Hearing Aids

    The Williams Sound NKL 001 is an induction neckloop designed to magnetically couple an audio signal to a telephone coil-equipped (T-Switch) hearing aid. The neckloop has a standard 1/8" mini plug that can be connected to any audio device that has an 8-16 Ohm 1/8" output, such as a beltpack receiver, TV, tape player, etc. The neckloop has a slider so you can adjust the tension, and the 18" cord provides a good amount of slack for use with body-worn devices.

    • Integrated safety breakaway device
    • Cord Length: 18"
    • Adult size
    • Connector: 1/8" mono plug
    • Monoaural
    • Impedance: 8 to 16 Ohms
    • Recommended for FM receivers and select IR receivers
    • For individuals with moderate to severe hearing loss
  • IDP008 - ADA Wall Plaque for Hearing Assistance

    The IDP008 from Williams Sound is a self-adhesive wall plaque that alerts your patrons to the fact that your establishment has a hearing assistance system. Perfect for theaters, auditoriums, and more, the plaque is large and easy-to-see.

  • AA Alkaline Battery (2-Pack)

    This Williams Sound AA Alkaline Battery 2-pack is compatible with several FM listening systems, receivers, transmitters, earphones, headphones, and more.

In the Box
Bundle Items
  • ANT025 - 39" Telescoping Whip Antenna for T45 Transmitter
  • TFP 048 Power Supply for PPA T45 and PPA T45NET
  • WLC 004 3-Pin US Main Power Cord for CHG 3512 Charger, IC-2 Control Console, and WIR TX75 Transmitter (Black, 7.5')
  • WCA 013 RCA Audio Cable (3')
  • Limted Lifetime Warranty
  • Limted 90-Day Warranty on Accessories
  • CLP 015 Belt Clip
  • Limited Lifetime Warranty
  • Limited 90-Day Warranty
  • Limited 1-Year Warranty
  • 90-Day Limited Warranty
Table of Contents
  • 1Description
  • PPA T45 Assistive Listening Transmitter
    Rack Mount Standard 19" Rack, one EIA rack space high, 1/2 space wide
    1-2 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 048)

    Input: 100-240 VAC, 50/60 Hz, IEC line cord

    Output: 24 VDC, 750 mA, 18 W, 2.5 mm ID center positive barrel connector

    Approvals: UL, CUL, Energy Star V, CSA listed
    Indicators Power Indicators: Push On/Push Off latching power button, backlit Green indicates Power ON, back-lit off indicates power OFF

    Audio Level Indicators: 10-LED array that reads -18 to +9 dB at 3 dB intervals. 7 Green, 2 Amber, and 1 red LED. Green LEDS indicate normal operating audio level peaks, Amber LEDS indicate close to overload peaks, Red LED indicates overload peaks

    Temperature Range Operating: +32 to +104°F (0 to 40°C)
    Storage: -4 to +158°F (-20 to 70°C)
    Menu Options Audio Presets (Music, Voice, Hearing Assist, Custom), Frequency/Channel selection, Frequency/Channel mode, Audio Input Source (Microphone, Line, Phantom, Digital AES/EB, Digital S/PDIF), High Pass Filter, Low Pass Filter, Compression, RF Output Power, Screen Saver Delay, Test Tone (400 Hz), Headphone Volume, Headphone Source
    Operating Frequencies 72.1 to 75.9 MHz, 17 wideband channels (selectable)
    Frequency Accuracy ±2 ppm stability, 32 to 122°F (0 to 50˚C)
    Deviation ±75 kHz maximum
    Pre-Emphasis 75 µsec
    • RF Field Strength: Does not exceed 80 mV/m at 9.8' (3.0 m)
    • RF Timer: Menu selectable - 30 Min, 4 Hours, or Always On
      Time starts when no audio is present
    • RF Power: Menu selectable - High, Medium, Low, OFF
    • RF Outputs: (1x) #10-32 stud connector in center of unit (PCB mounted), (1x) F-connector on rear chassis
    • RF Transmit Indicator: 1 Green LED, indicates RF “ON”


    Antenna Type Compatible Antennas: ANT 005, ANT 021, ANT 024, or ANT 025
    Transmission Range Up to 1000' (304 m) with ANT 005 coaxial antenna mounted on rear chassis connector
    Audio Processing Functions DSP, Compression: 1:1, 1.5:1 or 2:1, High Pass and Low Pass Filter Frequency control
    Frequency Response 31 Hz to 16 kHz, ±3 dB ("Music" audio preset)
    Signal-to-Noise Ratio ≥74 dB Transmitted RF
    Total Harmonic Distortion Less than 0.25% @ 1 kHz (RF output)
    Common Mode Rejection >57 dB @ 1 kHz, Mic or Line
    Audio Inputs 1x combination 3-pin XLR, 1/4" TRS jack for mic or line level analog audio, balanced or unbalanced line level, or microphone with selectable phantom power
    1x XLR for digital audio, AES3/EBU, supported sample rates 44.1 and 48 kHz
    1x RCA for digital audio, S/PDIF, supported sample rates 44.1 and 48 kHz
    Gain Adjustment In menu, adjustable to 0 to -50 dB, in 1 dB steps
    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
    Input Level Microphone:
    -55 dBV (1.7 mV RMS), nominal (1st amber LED)
    -15 dBV (180 mV RMS), overload warning (displayed on screen)
    +20 dBV (10.0 V RMS), absolute maximum ratings

    -25 dBV (55 mV RMS), nominal (1st amber LED)
    +16 dBV (6.3 V RMS), overload warning (displayed on screen)
    +20 dBV (10.0 V RMS), absolute maximum ratings
    Headphone Output 1/4" TRS stereo jack, mono signal, 15.7 mW, maximum in 33 Ohms (level adjustable in menu 0 to -40 dB in 2 dB steps)
    Line Output RCA jack (black), -10 dBV (.32 V RMS), output impedance 100 Ohms
    Ethernet RJ-45 on back of unit (PPA T45NET only)
    Approvals FCC, RoHS2, WEEE, Industry Canada
    Dimensions 8.45 x 8.25 x 1.72" (21.5 x 21 x 4.4 cm)
    Weight Transmitter: 3.0 lb (1.36 kg)
    Packaging Info
    Box Dimensions (LxWxH) 12.756 x 10.551 x 3.543"
  • PPA SelectView FM Receiver
    Battery Type 2x AA Alkaline or NiMH rechargeable
    Battery Life Alkaline Batteries: 50 hours, approximate
    Rechargeable NiMH Batteries (1,500 mAh): 32 hours, approximate
    Current Consumption 52 mA, nominal
    Operating Temperature Range 32 to 122° F (0 to 50° C)
    Channels 17x Wideband, accessed via menu
    Operating Frequencies 72.1, 72.2, 72.3, 72.4, 72.5, 72.6, 72.7, 72.8, 72.9, 74.7, 75.3, 75.4, 75.5, 75.6, 75.7, 75.8, 75.9 MHz
    FM Deviation 75 kHz
    De-Emphasis 75 µS
    Screen 1" (25.4 mm) OLED
    Power Indication Power Button: Backlit green
    Good Battery Strength: Glows solid
    Low Battery: flashes
    Sensitivity 2 µV at 12 dB Sinad with squelch defeated
    Input Overload 100 mV
    Frequency Response 200 Hz to 15 kHz, ±3 dB
    Modulation FM, ±75 kHz peak deviation
    Signal to Noise Ratio Minimum 65 dB @ 1.0 V
    Antenna Receive Antenna: Integral with earphone/headphone cord
    Audio Output 35 mW maximum at 16 Ohms
    Headphone Connector 1/8" (3.5 mm) stereo jack, mono output for stereo or mono earphones/headphones
    Power Save Mode Enters sleep mode after approximately 3 minutes of no RF signal
    Construction ABS plastic with aluminum face plate
    Dimensions (H x W x D) 4.1 x 2.9 x 1.4" (104 x 72 x 35 mm)
    Weight With Batteries: 4.6 oz (130 g)
    Without Batteries: 2.6 oz (73 g)
    Packaging Info
    Box Dimensions (LxWxH) 3.858 x 2.52 x 1.181"
  • EAR 022 Surround Earphone
    Style Around-ear speaker
    Plug 1/8" / 3.5 mm mono
    Driver Size 0.9" / 23.0 mm
    Nominal Impedance 32 Ohms
    Frequency Response 20 Hz to 20 kHz
    Power Input 30 mW
    Sensitivity 118 dB @ 1 kHz
    Cord Length 39.0" / 99.1 cm
    Weight 0.5 oz / 15.0 g
    Packaging Info
    Box Dimensions (LxWxH) 2.7 x 2.2 x 0.3"
  • NKL 001 Induction Neckloop for T-Switch Hearing Aids
    Magnetic Field Strength 25 mW input at 1000 Hz produces 1.7 A/m 6" above the center of loop
    85μW input produces 0.1 A/m (IEC Standard)
    Input Power 500 mW max
    Impedance 8 to 16 Ohms
    Connector 1/8" / 3.5 mm mono mini-plug
    Cable Length 18 / 457 mm
    Color Black
    Approvals RoHS, WEEE
    Weight 1.5 oz / 43 g
    Packaging Info
    Box Dimensions (LxWxH) 5.6 x 4.1 x 1.0"
  • IDP008 - ADA Wall Plaque for Hearing Assistance
    Dimensions (WxH) 6.5 x 10.5" (165 x 266 mm)
    Packaging Info
    Box Dimensions (LxWxH) 7.3 x 4.3 x 0.1"
  • AA Alkaline Battery (2-Pack)
    Battery Type 2 x AA
    Battery Chemistry Alkaline
    Battery Voltage 1.2 V
    Packaging Info
    Box Dimensions (LxWxH) 1.9 x 1.0 x 0.5"

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