• Williams AV FM 558-24 PRO Rechargeable Assistive Listening System
  • Williams AV FM 558-24 PRO Rechargeable Assistive Listening System Transmitter back
  • Williams AV FM 558-24 PRO Rechargeable Assistive Listening System Receiver
  • Williams AV FM 558-24 PRO Rechargeable Assistive Listening System Neckloop
  • Williams AV FM 558-24 PRO Rechargeable Assistive Listening System Earphone
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Williams AV FM 558-24 PRO Assistive Listening System

Williams AV FM 558-24 PRO Assistive Listening System

SoundPro Item: 91379 | Part Number: FM 558-24 PRO

$9,780.00
$9,780.00 $9,780.00
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MSRP: $9,780.00 | MAP: $9,780.00

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  • Both FM and Wi-Fi transmission
  • Multiple digital audio input options on transmitter
  • Multi-channel FM receiver
  • OLED screen on transmitter and receiver
  • Receiver sceen displays receiver status and immediate entry to all user settings
  • On-screen channel selection on the receiver
  • System can be expanded to accommodate different numbers of listeners
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The FM 558 PRO system package is a complete turnkey solution that includes 4 PPA R38 receivers and an FM+ transmitter for both FM and Wi-Fi transmission from the same box. The PRO bundle includes a coax cable, and rack panel kit for professional installation.

This system features the cutting edge PPA T55 transmitter (replacing the T45 FM transmitter) with multiple digital audio input options and an OLED display with easy-to manage navigation, and network control features.

The FM R38 is a multi-channel FM receiver with a high-resolution OLED screen. The receiver comes with earphones and batteries, but is otherwise identical to the PPA R38. The R38 offers a quick view of receiver status and immediate entry to all user settings. On-screen channel selection with easy access to 17 pre-set, wide-band frequencies (72-76 MHz). The system is expandable, accommodating any number of listeners. This system complies with 2010 ADA guidelines for hearing assistance all for nearly the same cost as traditional FM systems.

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Specifications

Dimensions
Total Cable Length
22 ft
Active Antenna Length
80"
Electrical
Cord
39"
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 (re: 1 kHz, ±3 dB) (“Music” Audio Preset)
Signal to Noise Ratio
67 dB (typical) Transmited RF
THD
less than 0.25% @ 1 kHz (RF output)
Audio Inputs
(1x) Combination 3-pin XLR, 1/4″ (TRS) jack for balanced or unbalanced line level, or balanced or unbalanced microphone with selectable phantom power
Headphone Output
1/4″ TRS stereo jack, mono signal, 14.85 mW at +9dB, maximum in 33 Ω (level adjustable in menu 0 to -40 dB in 2 dB steps)
Channels
17 Wideband, accessed via menu
Sensitivity
2 µV at 12 dB Sinad with squelch defeated
Audio Output
35 mW max at 16 Ω
Connectivity
Ethernet
RJ-45 on back of unit supports CAT 5e cable lengths up to 328 feet (100 meters
RF Outputs
(1x) #10-32 stud connector in center of unit (pcb mounted); (1x) F-connector on rear chassis
Line Output
RCA jack (black), -10 dBV (.32 VRMS); Output impedance 100 ohms at +9dB
Input Overload
100 mV
Connector Type
F-connector
Plug
3.5mm mono
Connector
3.5mm mono plug
Input Power
500 mW max
Construction
Rack Mount
Standard 19” Rack, one EIA rack space high, 1/2 space wide
Cable Type
RG 59 coax
Unit Capacity
12 units
Identifiers
Length
18.5" cord
General
Power Supply
Desktop Style Transformer (TFP 062); Input: 100-240 VAC, 50/60 Hz. IEC Line Cord; Output: 24 VDC, 750 mA, 18W. 2.5mm ID center positive barrel connector
Operating Frequencies
72.1-75.9 MHz , 17 wideband channels (selectable)
Deviation
± 75 kHz max
Pre-emphasis
75 microsec
RF Field Strength
does not exceed 80 mV/m at 3 m
Current Consumption
52mA nominal
FM Deviation
75 kHz
De-emphasis
75 µS
RF
Transmission Range
up to 1000 ft (304 m) with ANT 005 coaxial antenna mounted on rear chassis connector
Radio
Modulation
FM, +/- 75 kHz peak deviation
Power
Battery Type
2 AA
Power Supply Input
90 - 240 VAC input
Charging Time
16 hours nominal

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