| General
Information |
| Manufacturer
|
Williams Sound |
| Manufacturer Part
Number |
FM 558 PRO |
| Product Name
|
FM Plus Large-Area Dual FM And
Wi-Fi Assistive Listening System With 4 FM R38 Receivers,
Features Coaxial Cable And Rack Panel Kit For Professional
Installation, Replaces FM 458 PRO
|
| UPC Code |
|
| Overview |
The Williams
FM 558 PRO is an FM Plus Large-area Dual FM and Wi-Fi
assistive listening system with 4 FM R38 receivers. It
features coaxial cable and rack panel kit for professional
installation. The new FM Plus integrates professional
WaveCAST Wi-Fi audio server technology into a Williams
Sound FM assistive listening system. End users can now
listen with either an FM receiver or with their smartphone
(via the WaveCAST Listening App). Along with this
flexibility comes exceptional audio quality, as the FM
Plus is built on a professional digital audio (DSP)
platform. Added plus: Its optional Dante interface
provides integrators with a full audio networking solution
The new FM Plus is designed to support those who want to
use their smartphones and headphones for a more discreet
assistive listening experience. Simplicity is also
available for those who want a more traditional assistive
listening system with a dedicated FM receiver and headset.
Venues no longer need to choose between providing FM or
Wi-Fi assistive listening systems. The FM Plus supports
both the new iOS and Android WaveCAST Apps, in addition to
all of the current and legacy Williams Sound FM receivers
operating on the 72-76 MHz bandwidth
The FM Plus can have most settings changed via the front
panel interface or the hosted web interface. A remote
programming guide is available upon request. The FM Plus
uses the WaveCAST app to provide an easy-to-use, intuitive
user interface. It is available on iOS or Android.
Listeners easily select channel and volume level once
their device is connected to the Wi-Fi network. The app
does not work on FM Broadcasts
The FM Plus uses the WaveCAST app to provide an
easy-to-use, intuitive user interface. It is available on
iOS or Android. Listeners easily select channel and volume
level once their device is connected to the Wi-Fi network.
The app does not work on FM Broadcasts |
| Features |
|
Features coaxial cable
and rack panel kit for professional installation
Audio presets-hearing
assistance, music, voice, and custom
Professional audio
inputs: 0.25"/XLR, phantom power, line-level output
jack
16-bit DAC provides a
48Khz sample rate
Includes 4 FM R38
receivers
Single-channel audio
streaming over Wi-Fi
Up to 1000 foot
operating range
True professional audio
interface
10 segment LED bar graph
Adjustable RF power
output
Professional DSP audio
platform
Works with existing
Williams Sound FM receivers
Works with free WaveCAST
iOS or Android apps
Supports 45 users in
unicast mode or 1500+ users in multicast mode
|
| Specification |
Description
|
FM Plus Assistive Listening System
with 4 FM R38 receivers |
System Includes
|
1 FM T55 Transmitter
4 PPA R38N Receivers
4 EAR 022 Surround Earphones
2 NKL 001 Neckloops
2 BAT KT6 2-Bay Chargers And Rechargeable Batteries
1 ANT 005 Remote Coaxial Antenna
1 IDP 008 ADA Wall Plaque
1 RPK 005 Rack Panel Kit |
Markets
|
Houses of Worship
Education: Lecture Halls/Classrooms
Government: City Halls
Stadiums/Performance Venues |
Applications
|
Assistive Listening
Interpretation
Audio Description
Presentation
Education/Training |
FM
T55 Transmitter
|
General
|
Color
|
Black/Silver with silver 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
062)
Input: 100-240 VAC, 50/60 Hz. IEC Line Cord
Output: 24 VDC, 750 mA, 18W. 2.5mm ID center
positive barrel connector |
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 to +104
Degree Fahrenheit
Storage: -4 to +158
Degree Fahrenheit |
User Interface
|
3.12"
High Resolution OLED display with selections via buttons
Hosted
Web page
Remote
control and monitorin |
| Ethernet |
RJ-45 on back of unit supports CAT
5e cable lengths up to 328 feet (100 meters)
10/100 Base-T IEEE 802.3 compliant, unique MAC address |
Approvals
|
FCC, RoHS3, WEEE, Industry Canada |
RF
Section
|
Operating Frequencies
|
72.1-75.9 MHz , 17 wideband
channels (selectable) |
Frequency Accuracy
|
+/- 2 ppm stability, 0-50 Degree
Celsius |
Deviation
|
+/- 75 kHz maximum |
Pre-Emphasis
|
75 microsec |
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 (304 m) with ANT 005
coaxial antenna mounted on rear chassis connector |
RF Outputs
|
10-32
stud connector in center of unit (pcb mounted)
F-connector
on
rear chassis |
RF Transmit Indicator
|
1 Green
LED On Air Indicator |
RF Power
|
Full,
Medium, Low or OFF indiacted by menu icon |
RF Time Out (sleep mode)
|
30 min. duration, 4 hr. duration,
or Always On selected via menu
Starts when audio is below -18 dB level with no button
pressed for selected duration |
Audio
Section
|
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) Transmitted RF |
Total Harmonic Distortion
|
Less than 0.25 percent at 1 kHz
(RF output) |
Common Mode Rejection
|
Greater than 57 dB at 1 kHz, Mic
or Line |
Audio Inputs
|
Combination 3-pin XLR, 0.25" (TRS)
jack for balanced or unbalanced line level, or balanced or
unbalanced microphone with selectable phantom power |
Audio Input Gain Adjust
|
In menu, adjustable to 0 to -50
dB, in 1dB 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 0.25" 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 |
Headphone Output
|
0.25" TRS stereo jack, mono
signal,
14.85 mW at +9dB, maximum in 33 O (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 at +9dB |
Audio
Section Input Levels
|
Microphone (at Audio Input Gain
= 0dB)
|
Nominal (1st Amber
LED): -55 dBV (1.7 mV
RMS)
Overload Warning (Displayed on Screen):
-15
dBV (180 mV RMS)
Absolute Max. Rating (Stresses above these ratings may cause
permanent damage or degrade reliability):
+20
dBV (10.0 V RMS) |
Line (at Audio Input Gain = 0dB)
|
Nominal (1st Amber LED): -25
dBV
(55 mV RMS)
Overload Warning (Displayed on Screen): +16
dBV
(6.3 V RMS)
Absolute Max. Rating (Stresses
above these ratings may cause permanent damage or
degrade reliability): +20
dBV
(10.0 V RMS) |
| Specifications are
subject to change without notice |
PPA
R38N
Receiver
|
Color
|
Black/Silver
Black ABS Plastic case with Aluminum faceplate |
Battery Type
|
2x AA Alkaline or 2x AA NiMH
Rechargeable |
Battery Life
|
2x AA non-rechargeable alkaline
batteries (BAT 001-2), approx. 50 hrs
2x AA rechargeable NiMH batteries (BAT 026-2), 1500mAh,
approx. 32 hrs |
Current Consumption
|
52 mA nominal |
Operating Temp. Range
|
32-122 Degree Fahrenheit |
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 microS |
Display Screen
|
1" OLED |
Power Indication
|
Power button, backlit green
Good battery strength-glows solid
Low battery-flashes |
Sensitivity
|
2 microV 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 at 1.0V |
Receive Antenna
|
Integral with earphone/headphone
cord |
Audio Output
|
35 mW max at 16 Ohms |
Headphone Connector
|
3.5mm stereo jack, mono output for
stereo or mono earphones/headphones |
Supplied Earphone
|
Stereo, earbud-type with foam
cushion, 3.5 mm plug, 32 Ohms |
Power Save Mode
|
Enters sleep mode after
approximately 3 minutes of no RF signal |
Approvals
|
FCC, Industry Canada, RoHS, WEEE |
Weight
|
4.6 oz (With batteries)
2.6 oz (Without batteries) |
EAR
022 Surround Earphone
|
Style
|
Around-ear speaker |
Plug
|
3.5mm mono |
Cord
|
39" |
Driver Size
|
23mm |
Nominal Impedance
|
32 Ohm |
Frequency Response
|
20-20 kHz |
Max Power Input
|
30 mW |
Sensitivity
|
118 dB at 1kHz |
NKL
001 Neckloops
|
Color
|
Black |
Cord Length
|
18.5" |
Connector
|
3.5mm mono plug |
Impedance
|
8-16 Ohms |
Input Power
|
500 mW max |
Magnetic Field Strength
|
25 mW input at 1000 Hz produces
1.7 A/m 6" above the center of loop
85microW input produces 0.1 A/m (IEC Standard) |
Approvals
|
RoHS, WEEE |
BAT
KT6 Charger Kit: 2-Bay Charger
|
Compatibility
|
PLR BP1 Loop receiver
PPA R37 FM receiver
PPA R37-8 FM receiver
PPA R38 FM receiver
PPA T46 FM transmitter
WIR RX22-4 Infrared receiver |
Enclosure
|
Black, ABS plastic |
Charger Power
|
Input: 6 VDC, 300mA, Center
Positive
Output: 100mA per bay |
Power Supply
|
Williams Sound TFP 041 (US) or TFP
030 (International) |
Input Power
|
100-240 VAC, 50-60 Hz, 0.5-0.3 A |
Output
|
6 VDC, 1.5 A |
Charging Time
|
16 hours nominal |
Unit Capacity
|
2 Units |
Indicators
|
2 Red LEDs, one for each bay
LEDs are lit when charging |
Approvals
|
CE, FCC, RoHS |
BAT
KT6 Charger Kit: Batteries
|
Battery Type
|
NiMH |
Battery Output
|
1.2 Volt |
Battery Capacity
|
1500 mAh |
ANT
005 Remote Coaxial Antenna
|
Compatibility
|
PPA T45, PPA T45NET, PPA T27
Transmitters |
Connector type
|
F-connector |
Cable type
|
RG 59 coax |
Nominal Impedance
|
75 Ohms |
Approvals
|
RoHs |
Length
|
Total Cable: 22'
Active Antenna: 80" |
IDP
008 ADA Wall Plaque
|
Dimensions (LxWxH)
|
10.37" x 6.25" x 0.13" |
RPK
005 Rack Panel Kit
|
Compatibility
|
PPA T45, PPA T45NET, MOD 232 |
Approvals
|
RoHS, IEC |
Size
|
Screws: 6-32 x 3/8" (Each) |
Weight
and Dimensions
|
Dimensions(WxDxH)
|
9.45" x 9.25" x 2.72" |
Weight
|
9.1 lbs
|
