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Williams Sound PPA-457-00
Personal PA FM Assistive Listening System Without Neckloops and Earhones

OUR PART #  PPA-457-00

Our Price: $1,082.00
List Price: $1,203.00
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The Williams Sound Personal PA® 457 features the cutting-edge PPA T45 transmitter, with multiple digital audio input options and an OLED display with easy-to-manage menu navigation. The system features three powerful microprocessors and has an operating range of up to 1000 feet, making the PPA 457 ideal for large venues where superior coverage is essential. This complete solution includes four PPA R37 receivers, each featuring seek-button channel selection with access to 17 pre-set wideband frequencies between 72-76 MHz. The system is expandable, accommodating any number of listeners. This system complies with 2010 ADA guidelines for hearing assistance.

Williams Sound PPA-457 Includes:

  • (4) PPA R37 Receivers
  • (1) ANT 025 Whip Antenna
  • (1) WCA 013 Audio Cable
  • (1) TFP 048 Power Supply
  • (1) IDP 008 ADA Wall Plaque
  • (8) BAT 001 AA Alkaline Batteriesited Warranty.

Williams Sound PPA-457 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
  • Made in the USA

Williams Sound PPA-457 Specifications:

  • PPA R37
    • Dimensions: 4.1" x 2.85" x 1.38" (104 x 72 x 35mm)
    • Weight: 
      • 4.6oz (130g) with batteries
      • 2.6oz (73g) without batteries    
    • Color: Black
    • Battery Type: (2) AA Alkaline or 2 x AA NiMH   
    • Battery Life:
      • (2) AA non-rechargeable alkaline batteries (BAT 001), approx. 50 hrs
      • (2) AA rechargeable NiMH batteries (BAT 026), 1500 mAh, approx. 32 hrs
    • Current Consumption: 52mA nominal
    • Temperature Range: – 0 to 50C
    • Channels 17, accessed via seek button in battery compartment
    • Operating Freq.: 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*
    • Intermediate Freq.: 75 kHz
    • FM Deviation: 75 kHz
    • De-Emphasis: 75 µS
    • LED Indicator: 
      • Power:  Green
      • Low Battery:  Flashes Green
    • AFC Range: ± 120 kHz
    • Sensitivity: 2 µV at 12 dB Sinad with squelch defeated
    • Input Overload: 100 mV
    • Frequency Response: 200 – 15 kHz
    • Modulation: FM, +/- 75 kHz peak deviation
    • Signal-to-Noise Ratio: 65 dB min @ 100 uV
    • Receive Antenna: Integral with earphone/headphone cord
    • Audio Output: 35 mW max, peak into 16 ohms
    • Output Connector: 3.5 mm stereo/mono phone jack
    • Earphone: Earbud-type with foam cushion, 3.5 mm plug, 32 Ohms Auto Shut-off Enters sleep mode after approx 6 mins of no RF signal
    • Approvals: FCC, Industry Canada, RoHS, WEEE
  • PPA T45
    • Dimensions: 8.45"(W) x 8.25"(D) x 1.72"(H)
    • Weight: Transmitter: 3.0 lbs (1.36 kg)
    • 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 kOhm 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.

Williams Sound PPA-457-00
Personal PA FM Assistive Listening System Without Neckloops and Earhones

OUR PART #  PPA-457-00

Product Information:

The Williams Sound Personal PA® 457 features the cutting-edge PPA T45 transmitter, with multiple digital audio input options and an OLED display with easy-to-manage menu navigation. The system features three powerful microprocessors and has an operating range of up to 1000 feet, making the PPA 457 ideal for large venues where superior coverage is essential. This complete solution includes four PPA R37 receivers, each featuring seek-button channel selection with access to 17 pre-set wideband frequencies between 72-76 MHz. The system is expandable, accommodating any number of listeners. This system complies with 2010 ADA guidelines for hearing assistance.

Williams Sound PPA-457 Includes:

  • (4) PPA R37 Receivers
  • (1) ANT 025 Whip Antenna
  • (1) WCA 013 Audio Cable
  • (1) TFP 048 Power Supply
  • (1) IDP 008 ADA Wall Plaque
  • (8) BAT 001 AA Alkaline Batteriesited Warranty.

Williams Sound PPA-457 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
  • Made in the USA

Williams Sound PPA-457 Specifications:

  • PPA R37
    • Dimensions: 4.1" x 2.85" x 1.38" (104 x 72 x 35mm)
    • Weight: 
      • 4.6oz (130g) with batteries
      • 2.6oz (73g) without batteries    
    • Color: Black
    • Battery Type: (2) AA Alkaline or 2 x AA NiMH   
    • Battery Life:
      • (2) AA non-rechargeable alkaline batteries (BAT 001), approx. 50 hrs
      • (2) AA rechargeable NiMH batteries (BAT 026), 1500 mAh, approx. 32 hrs
    • Current Consumption: 52mA nominal
    • Temperature Range: – 0 to 50C
    • Channels 17, accessed via seek button in battery compartment
    • Operating Freq.: 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*
    • Intermediate Freq.: 75 kHz
    • FM Deviation: 75 kHz
    • De-Emphasis: 75 µS
    • LED Indicator: 
      • Power:  Green
      • Low Battery:  Flashes Green
    • AFC Range: ± 120 kHz
    • Sensitivity: 2 µV at 12 dB Sinad with squelch defeated
    • Input Overload: 100 mV
    • Frequency Response: 200 – 15 kHz
    • Modulation: FM, +/- 75 kHz peak deviation
    • Signal-to-Noise Ratio: 65 dB min @ 100 uV
    • Receive Antenna: Integral with earphone/headphone cord
    • Audio Output: 35 mW max, peak into 16 ohms
    • Output Connector: 3.5 mm stereo/mono phone jack
    • Earphone: Earbud-type with foam cushion, 3.5 mm plug, 32 Ohms Auto Shut-off Enters sleep mode after approx 6 mins of no RF signal
    • Approvals: FCC, Industry Canada, RoHS, WEEE
  • PPA T45
    • Dimensions: 8.45"(W) x 8.25"(D) x 1.72"(H)
    • Weight: Transmitter: 3.0 lbs (1.36 kg)
    • 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 kOhm 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.
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