Williams Sound PPA 458 Personal PA FM Assistive Listening System

Williams Sound PPA 458 Personal PA FM Assistive Listening System

Williams Sound PPA 458 Personal PA FM Assistive Listening System

B&H # WIPPA458 MFR # PPA 458
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  • 1Description

The PPA 458 Personal PA FM Assistive Listening System from Williams Sound includes the PPA T45 transmitter which features multiple digital audio input options and an OLED display with easy-to-manage menu navigation. It contains three microprocessors and is designed for high-quality audio and RF performance. With an operating range of up to 1000', the PPA 458 is suitable for large venues. The system is expandable, accommodating any number of listeners. It also complies with 2010 ADA guidelines for hearing assistance.

This system consists of one PPA T45 transmitter, four PPA R38N receivers, two NKL 001 neckloops, four EAR 022 surround earphones, one ANT 025 whip antenna, a TFP 048 power supply, a WLC 004 U.S. main power cord, one WCA 013 audio cable, four sets of BAT 001-2 AA alkaline batteries, and an IDP 008 ADA wall plaque.

Note: This system is approved by the FCC for operation in U.S. markets. The system cannot be used in all countries. Check with your government radio regulations for 72-76 MHz operation.

  • 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 (72-76 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.

    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
  • NKL001 - Induction Neckloop for T-Switch Hearing Aids

    The NKL001 from Williams Sound 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 3.5mm mini plug that can be connected to any audio device that has an 8-16 Ohm 3.5mm output, such as a beltpack receiver, TV, tape player, etc. The neckloop has a slider so you can adjust the tension, and the 18.5" cord provides a good amount of slack for use with body-worn devices.

    Note: An optional extension cord (WCA007WC) is available separately for added reach.

  • EAR022 - Monaural Clip-On Earphone

    The EAR022 from Williams Sound 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 3.5mm mini plug is compatible with a wide variety of devices.

  • ANT025 - Telescoping Whip Antenna for T45 Transmitter

    The ANT025 from Williams Sound is a telescoping whip antenna intended for use with the T45 personal PA transmitter.

  • WLC 004 3-Pin US Main Power Cord for CHG 3512 Charger, IC-2 Control Console, and WIR TX75 Transmitter (Black, 7.5')

    The black 7.5' WLC 004 3-Pin US Main Power Cord from Williams Sound can be used with CHG 3512 3V 12 unit charger, CHG 3512 PRO 3V 12 unit charger with case, IC-2 interpreter control console, and WIR TX75 mid-range infrared transmitter.

  • WCA 013 RCA Audio Cable (3')

    The three foot WCA 013 RCA Audio Cable from Williams Sound is a standard RCA phono male to RCA phone male cable, designed to be used as an audio input cable for the company's PPA T27 and PPA T35 personal PA base station transmitters. The cable can also be used in any application that requires unbalanced audio connectivity using RCA connectors.

  • TFP 048 Power Supply for PPA T45 and PPA T45NET

    The TFP 048 Power Supply for PPA T45 and PPA T45Net from Williams Sound can be used as a power supply for Williams Sound PPA T45 and PPA T45NET. Please note, line cord not included.

  • PPA T45 - Personal PA FM Base Station Transmitter
  • PPA T45NET - Personal PA; FM Base Station Transmitter with Network Control
  • WLC 004 - Main power cord (U.S.)
  • WLC 005 - Main power cord (EURO)
  • WLC 006 - Main power cord (UK)
  • WLC 007 - Main power cord (AUS)
  • 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 - 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')
  • Lifetime Limited Warranty (90 Days on Accessories)
  • CLP 015 Belt Clip
  • Limited Lifetime Warranty
  • 1-Year Limited Warranty
  • 90-Day Limited Warranty
  • 90-Day Limited Warranty
  • Limited 90-Day Warranty
  • Limited 90-Day 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 - 75.9 MHz, 17 wideband channels (selectable)
    Frequency Accuracy ±2 ppm stability, 32-122°F (0-50˚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 - 16000 Hz, ±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 kHz and 48 kHz
    1x RCA for digital audio, S/PDIF, supported sample rates 44.1 kHz 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)
    +20dBV (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 Ω
    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"
  • NKL001 - Induction Neckloop for T-Switch Hearing Aids
    Magnetic Field Strength 25mW Input @ 1kHz Produces 1.7A/m @ 6" Above Loop Center
    Input Power 500mW Max
    Impedance 8-16 Ohms
    Connector 3.5mm Standard Mini Plug
    Cable Length 18.5" (470mm)
    Weight 1.5 oz (43g)
    Packaging Info
    Box Dimensions (LxWxH) 5.6 x 4.1 x 1.0"
  • EAR022 - Monaural Clip-On Earphone
    Packaging Info
    Box Dimensions (LxWxH) 2.7 x 2.2 x 0.3"
  • ANT025 - Telescoping Whip Antenna for T45 Transmitter
    Packaging Info
    Box Dimensions (LxWxH) 11.0 x 2.5 x 0.1"
  • WLC 004 3-Pin US Main Power Cord for CHG 3512 Charger, IC-2 Control Console, and WIR TX75 Transmitter (Black, 7.5')
    Compatibility CHG 3512 3V 12 unit charger, CHG 3512 PRO 3V 12 unit charger with case, IC-2 interpreter control console, and WIR TX75 mid-range infrared transmitter
    Length 7.5' (2.3 m)
    Thickness 18/3 AWG
    Cord Type 3-pin CN power cord with IEC connector
    Weight 9.6 oz (272.2 g)
    Packaging Info
    Box Dimensions (LxWxH) 5.5 x 5.5 x 0.875"
  • WCA 013 RCA Audio Cable (3')
    Cable Type Two-conductor RCA to RCA audio cable
    Length 3' (0.9 m)
    Connector 1 RCA phono male
    Connector 2 RCA phono male
    Packaging Info
    Box Dimensions (LxWxH) 3.1 x 2.5 x 0.4"
  • TFP 048 Power Supply for PPA T45 and PPA T45NET
    Input 100-240 V AC, 50/60 Hz, 0.5 A
    Output 24 V DC, 0.75 A
    Packaging Info
    Box Dimensions (LxWxH) 4.4 x 2.0 x 0.5"
  • 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)
    Output 1.2 V
    Compatible With PFM 330 - Motiva Personal FM Listening System
    PFM 330 RCH - Motiva Personal FM Listening
    PFM 360 - Motiva Personal FM Listening System
    PFM 360 RCH - Motiva Personal FM Listening System
    PFM 863 - Hearing Helper Personal FM System
    PFM R33 - Motiva FM Receiver
    PFM R36 - Motiva FM Receiver
    PFM T36 - Motiva FM Transmitter
    PKT D1 E08 - Pocketalker Ultra with wide-range earphone
    PKT D1 E14 - Pocketalker Ultra with dual mini earbud
    PKT D1 EH - Pocketalker Ultra with earbud and headphone
    PKT D1 H26 - Pocketalker Ultra with rear-wear headphone
    PKT D1 N01 - Pocketalker Ultra with Neckloop
    PKT D1-0 - Pocketalker Ultra (no earphone / headphone)
    PKT PRO1-0 - Pocketalker PRO (no earphone / headphone)
    PKT PRO1-1 - Pocketalker PRO with wide-range earphone
    PKT PRO1-2 - Pocketalker PRO with single mini earbud
    PKT PRO1-3 - Pocketalker PRO with folding headphone
    PPA R35-8N - Personal PA FM 8-channel Receiver
    PPA R37 - PPA Select FM Receiver
    PPA T36 - Personal PA Body-pack Transmitter
    R863 - Hearing Helper FM Receiver
    WIR RX22-4 - SoundPlus 4-channel Infrared Receiver
    Packaging Info
    Box Dimensions (LxWxH) 1.9 x 1.0 x 0.5"

Williams Sound PPA 458 Personal PA FM Assistive Listening System Review

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