Williams Sound FM-457-PRO

FM 457 PRO

OUR PART #:  FM-457-PRO

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  • PPA T45 Transmitter
  • Multiple Digital Audio Inputs (AES, SPDIF) provide direct connection to digital signal sources
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The FM 457 PRO from Williams Sound is a Personal PA PRO FM Assistive Listening 4-Receiver System. It features the cutting-edge PPA T45 transmitter that's equipped with multiple digital audio input options plus an OLED display that offers easy-to-manage menu navigation, and features 3 powerful microprocessors and the very same high-quality audio and RF performance you can expect from Williams Sound. With its up to 1000 foot operating range, the FM 457 PRO is great for large venues where superior coverage is required. It's a complete turnkey solution that includes (4) R37 receivers, each featuring seek-button channel selection with access to 17 pre-set wideband frequencies between 72-76 MHz. This package also includes a coaxial cable and rack panel kit for professional installation. The system is expandable, accommodating any number of listeners. Complies with 2010 ADA guidelines for hearing assistance, and is covered by Lifetime PLUS Limited Warranty.

Williams Sound FM 457 PRO Includes:

  • (1) PPA T45 Transmitter
  • (4) PPA R37N Receivers
  • (4) EAR 022 Surround Earphones
  • (2) NKL 001 Neckloops
  • (2) BAT KT6 Dual Drop-in Charger Kits, each including:
    • (2) BAT 026-2 AA Rechargeable Batteries
  • (1) ANT 005 Coaxial Antenna
  • (1) ANT 025 39" Telescoping/Whip Antenna
  • (1) IDP 008 Wall Plaque
  • (1) RPK 005 Rack Panel Kit
  • (1) TFP 048 Power Supply
  • (1) WCA 013 RCA Audio Cable, 3 feet
  • (1) WLC 004 Main Power Cord (U.S.)
  • Optional 17-channel receiver (PPA R38N) is available for multi-channel applications (
  • All items can be individually purchased.

Williams Sound FM 457 PRO Features:

  • PPA T45 Transmitter
    • 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
    • 1000ft operating range
    • OLED display, push-button menus
    • Microprocessor controlled
    • Adjustable RF power output
    • Combo XLR, ¼" TRS inputs
    • Lifetime PLUS Limited Warranty (90 days on accessories)
  • PPA R37N Receiver
    • Seek-button access to all 17 wideband frequencies in the 72-76 MHz bandwidth
    • Channel-lock capability
    • Battery-saving sleep mode
    • Low-battery indicator
    • Field tunable
  • EAR 022 Surround Earphones
    • Hangs on outside of the ear
    • Excellent sound quality
    • 3.5mm mono plug
    • 1m cord
    • Monoaural
    • 32 ohm
    • Recommended for FM receivers and select IR receivers.
    • Designed for individuals with mild and low gain hearing loss

Williams Sound FM 457 PRO Specifications:

  • ANT 005 Coaxial Antenna
    • Connector type: F-connector
    • Cable type: RG 59 coax
    • Nominal Impedance: 75 Ohms
    • Total Cable Length: 22ft
    • Active Antenna Length: 80"
  • ANT 025 RF Whip Antenna
    • Connector type: Screw to PCB
    • Cable type: N/A
    • Nominal Impedance: N/A
    • Length: 39"
  • EAR 022 Surround Earphones
    • Style: Around-ear speaker
    • Plug: 3.5mm mono
    • Cord: 39"
    • Driver Size: 23 mm
    • Nominal Impedance: 32 Ohms
    • Freq. Response: 20 Hz - 20 kHz
    • Weight: 15g
    • Max Power Input: 30 mW
    • Sensitivity: 118 dB @ 1 kHz
  • IDP 008 Wall Plaque
    • Dimensions (L x W x H): 10-3/8" x 6-¼" x 1/8"
  • TFP 048 Power Supply
    • Input: 100-240 VAC, 50/60 Hz, 0.5 A
    • Output: 24 VDC, 0.75 A
    • Weight: 0.3 lbs.
  • BAT 026-2
    • (2) AA NiMH Rechargeable Batteries. 1.2 Volt, 1500 mAh
  • WCA 013 RCA Audio Cable
    • Description: Single RCA - RCA audio cable
    • Connector type: RCA - RCA
    • Cable type: 2-conductor
    • Impedance: N/A
    • Length: 3ft
  • WLC 004 - AC main power cord (U.S.)
    • IEC/CN AC main power cord, 3-pin (grounded), US main power cord
    • Weight: 0.60 lbs.
    • Color: Black
    • Length: 7.5ft
  • PPA R37N Receiver
    • Dimensions: 4.1" x 2.85" x 1.38" (104 x 72 x 35mm)
    • Weight: 4.6 oz. (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 50°C
    • 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
    • Warranty: Lifetime PLUS Limited Warranty, 90 Days on most accessories.
  • PPA T45 Transmitter
    • General:
      • Dimensions (W x D x H): 8.45" x 8.25" x 1.72" (21.5 x 21 x 4.4 cm)
      • Weight: Transmitter: 3.0 lbs. (1.36 kg)
      • Shipping Weight: 4.50 lbs. (2.04 kg) (Transmitter, Power Supply, Antenna and packaging)
      • Color: Black/Silver with black legends on the front, white legends on the back
      • 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, fading from bright to dark indicates Sleep Mode*
      • 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, Ethernet/Network Settings (PPA T45 NET and PPA T45 NET D).
    • RF:
      • 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
      • Transmission Range: Up to 1000ft (304 m) with ANT 005 coaxial antenna mounted on rear chassis connector
      • RF Time-out (Sleep Mode): Menu selectable - 30 Min, 4 Hours, or Always On; timer starts when audio is below the -21dB VU level and no buttons are pressed
      • RF Power: Menu selectable - Full, 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 Air”
    • Audio
    • Audio Processor Functions: DSP based; 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, ¼" (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 ¼" 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
    • Input Levels (Bal or Unbal, at Audio Input Gain = 0dB):
      • Nominal (1st Amber LED)
      • Overload Warning (Displayed on Screen)
      • Absolute Maximum Ratings*
    • Microphone:
      • -55 dBV (1.7 mV RMS)
      • -15 dBV (180 mV RMS)
      • +20dBV (10.0 V RMS)
    • Line:
      • -25 dBV (55 mV RMS)
      • +16 dBV (6.3 V RMS)
      • +20 dBV (10.0 V RMS)
    • Headphone Output: ¼" 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 VRMS); Output impedance 100 Ohms
  • Other:
    • Ethernet: RJ-45 on back of unit (PPA T45NET and PPA T45 NET D) supports CAT5e cable lengths up to 328 feet (100 meters); 10/100 Base-T IEEE 802.3 compliant, unique MAC address. Cat5e sheilded cable must be used to meet FCC requirements.**
    • Dante: RJ-45 on back of unit (PPA T45 NET D only) supports CAT5e cable lengths up to 328 feet (100 meters); 10/100 Base-T IEEE 802.3 compliant, unique MAC address. Cat5e sheilded cable must be used to meet FCC requirements.**
    • Approvals: FCC including Part 15**, RoHS2, WEEE, Industry Canada
    • Warranty: Lifetime PLUS Limited Warranty (90 Days on most accessories)

Note:

Approved by the FCC for operation only in U.S. markets. The system cannot be used in all countries. Check with your local government radio regulations for 72-76 MHz operation

Specifications are subject to change without notice.

*Stresses above these ratings may cause permanent damage. Exposure for extended periods may degrade reliability.

**Effective July 11, 2016, the FCC has mandated tighter emissions limits on auditory assistance transmitters (72-76 MHz) manufactured or imported after this date to help avoid interference with and/or degradation of other airborne signals (All products manufactured prior to July 11, 2016, are compliant). Williams Sound FM transmitters – PPA T46, PPA T27 and PPA T45 (all models) – all have received a Grant of Certification from the FCC and are fully compliant/approved under this new mandate.

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

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