Williams Sound PPA 458 PRO
Personal PA Pro FM Assistive Listening System


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List Price: $1,726.00
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The Personal PA® 458 PRO features the cutting-edge PPA T45 transmitter, with multiple digital audio input options and an OLED display with easy-to-manage menu navigation. Features three powerful microprocessors and the same high-quality audio and RF performance you’ve come to expect from Williams Sound. With an operating range of up to 1000 feet, the PPA 458 PRO is ideal for large venues where superior coverage is essential. This complete turnkey solution includes four PPA R38 receivers, each featuring an OLED display and on-screen channel selection with easy access to 17 pre-set, wideband frequencies (72-76 MHz). Includes a coaxial cable and rack panel kit for professional installation. The system is expandable, accommodating any number of listeners. This system complies with 2010 ADA guidelines for hearing assistance and is covered by Lifetime PLUS Limited Warranty.

NOTE: 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.

Williams Sound PPA 458 PRO System Includes:

  • (1) PPA T45 Transmitter
  • (4) PPA R38 Receivers
  • (2) NKL 001 Neckloops
  • (4) EAR 013 Single Mini Earbuds
  • (1) ANT 025 Whip Antenna
  • (1) WCA 013 Audio Cable
  • (1) TFP 048 Power Supply
  • (4) BAT 001-2 AA Alkaline Batteries
  • (1) IDP 008 Wall Plaque
  • (1) ANT 005 Coaxial Antenna
  • (1) RPK 005 Rack Panel Kit

Williams Sound PPA 458 PRO Features:

  • T45 professional transmitter
  • Up to 1000’ operating range
  • OLED display, push-button menus
  • Microprocessor controlled
  • Accommodates any number of listeners
  • Adjustable power output
  • Combo XLR, 1/4" TRS inputs
  • Meets ADAAG guidelines

Williams Sound PPA R38N Specifications:

  • Battery Type: (2) AA Alkaline or (2) AA NiMH Rechargeable
  • Battery Life:
  • (2) AA non-rechargeable alkaline batteries (BAT 001-2), approx. 50 hrs.
  • (2) AA rechargeable NiMH batteries (BAT 026-2), 1500mAh, approx. 32 hrs.
  • Current Consumption: 52mA nominal
  • Operating Temp. Range: 32° – 122°F  (0° to 50°C)
  • Channels:  17 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
  • Display Screen: 1" 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 – 15 kHz, ±3dB
  • Modulation: FM, +/- 75 kHz peak deviation
  • Signal-to-Noise Ratio: Minimum 65 dB @ 1.0V
  • Receive Antenna: Integral with earphone/headphone cord
  • Audio Output: 35 mW max at 16 Ohms
  • Headphone Connector: 3.5 mm stereo jack, mono output for stereo or mono earphones/headphones
  • Supplied Earphone: Stereo,earbud-type with foam cushion, 3.5 mm plug, 32 O
  • Power Save Mode: Enters sleep mode after approximately 3 minutes of no RF signal
  • Approvals: FCC, Industry Canada, RoHS, WEEE
  • Dimensions: 4.1" x 2.85" x 1.38"
  • Weight: 4.6oz (130g) with batteries. 2.6oz (73g) without batteries
  • Color: Black/Silver. Black ABS Plastic case with Aluminum faceplate.

Williams Sound PPA T45 Specifications:

  • 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, 18W.  2.5mm ID center positive barrel connector.  
  • Approvals:  UL, CUL, Energy Star V, CSA listed.
  • Power ON Indicator: Push On/Push Off latching power button, backlit Green indicates Power ON, backlight off indicates power OFF.
  • Temperature Range:
    • Operating: +32° F to +104° F (0° C to 40° C)
    • Storage: -4° F to +158° F (-20° C to 70° C)
  • Menu Settings: 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
  • RF Section
    • Operating Frequencies: 72.1-75.9 MHz , 17 wideband channels (selectable)
    • Frequency Accuracy: ± 2 ppm stability, 0-50° C
    • Deviation: ± 75 kHz maximum.
    • Pre-Emphasis: 75 µsec.
    • RF?Field Strength: Does not exceed 80 mV/m at 3 m
    • Compatible Antennas: ANT 005, ANT 021, ANT 024, or ANT 025.
    • Transmission Range: Up to 1000 ft (304 m) with ANT 005 coaxial antenna mounted on rear chassis connector.
    • RF Timer: Menu selectable - 30 Min, 4 Hours, or Always On.  Timer 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”
  • Audio Section
    • Audio Processor 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.
  • Audio Input Gain Adjust: In menu, adjustable to 0 to -50 dB, in 1dB steps
  • Phantom Power: 14.4 VDC applied through 2.2 kO resistors to analog combo jack: Pin 2 and Pin 3 on XLR jack, or tip and ring on 1/4" TRS jack
  • 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.
  • Dimensions: 8.45"(W) x 8.25"(D) x 1.72"(H) (21.5 cm x 21 cm x 4.4 cm)
  • Weight: 3.0 lbs (1.36 kg)
  • Color: Black/Silver with black legends on the front, white legends on the back
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Rack Kit, Dual Williams Sound RPK-006 Rack Kit, Dual

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