| General
Information |
| Manufacturer
|
Williams Sound |
| Manufacturer Part
Number |
FM 557-12 PRO |
| Product Name
|
PRO FM Large-Area Dual FM And
Wi-Fi Assistive Listening System, Coaxial Cable And Rack
Panel Kit For Professional Installation, Includes,
Transmitter, Receivers, Surround Earphones, Neckloops,
12-Bay Charger, AA NiMH Rechargeable Batteries, Remote
Coaxial Antenna, ADA Wall Plaque, Rack Panel Kit, Replaces
FM 457-12 PRO
|
| UPC Code |
|
| Overview |
The Williams
FM 557-12 PRO is an FM Plus large-area dual FM and Wi-Fi
assistive listening system with (12) FM R37 receivers. It
features a 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
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 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. 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
Flexible and simple. The FM R37 receiver features
easy-to-use, seek-button channel selection with access to
17 pre-set wideband frequencies between 72-76 MHz.
Digitally synthesized for even greater audio clarity and
stability. A versatile 3.5mm stereo/mono jack allows for a
variety of earphone and headphone options and is
neckloop/telecoil-equipped-hearing-aid compatible |
| Features |
|
Professional audio
inputs: 1/4"/XLR, phantom power, line level output
jack
Audio presets: hearing
assistance, music, voice and custom
16-bit DAC provides
48Khz sample rate
10 segment LED bar graph
Single-channel audio
streaming over Wi-Fi
True professional audio
interface
Supports 45 users in
unicast mode or 1500+ users in multicast mode
Works with free WaveCAST
iOS or Android apps
Up to 1000' operating
range
Adjustable RF power
output
Professional DSP audio
platform
Works with existing
Williams Sound FM receivers
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
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
Integrated safety
breakaway device
18" Cord
Adult size
3.5mm plug
8-16 ohm
Recommended for
PockeTalkers, FM receivers and select IR receivers
For individuals with
moderate to severe hearing loss
|
| Specification |
Description
|
FM Plus Large-area Dual FM and
Wi-Fi Assistive Listening System with 12 FM R37 Receivers |
System Includes
|
1 FM T55 Transmitter
12 PPA R37N Receivers
12 EAR 022 Surround Earphones
3 NKL 001 Neckloops
1 CHG 3512 12-Bay Charger
12 BAT 026-2 AA NiMH 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 monitoring |
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 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 indicated
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, 1/4" (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 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 |
Headphone Output
|
1/4" 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 R37N Receivers
|
Color
|
Black |
Battery Type
|
2x 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 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 |
Intermediate Freq.
|
75 kHz |
FM Deviation
|
75 kHz |
De-Emphasis
|
75 microS |
LED Indicator
|
Power: Green
Low Battery: Flashes Green |
AFC Range
|
+/- 120 kHz |
Sensitivity
|
2 microV 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 at 100 uV |
Receive Antenna
|
Integral with earphone/headphone
cord |
Audio Output
|
35 mW max, peak into 16 ohms |
Output Connector
|
3.5mm stereo/mono phone jack |
Earphone
|
Earbud-type with foam cushion, 3.5
mm plug, 32 O |
Auto Shut-off
|
Enters sleep mode after approx 6
mins of no RF signal |
Approvals
|
FCC, Industry Canada, RoHS, WEEE |
Weight
|
With batteries: 4.6 oz
Without batteries: 2.6 oz |
EAR 022 Surround Earphones
|
Style
|
Around-ear speaker |
Plug
|
3.5mm mono |
Cord
|
39" |
Driver Size
|
0.9" |
Nominal Impedance
|
32 Ohm |
Freq. Response
|
20-20kHz |
Max Power Input
|
30 mW |
Sensitivity
|
118 dB at 1kHz |
NKL 001 Neckloop
|
Color
|
Black |
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 |
Length
|
18.5" cord |
CHG 3512 12-Bay Charger
|
Color
|
Black ABS |
Power Supply Input
|
90-240 VAC input |
Power Supply
|
TFP 037 Switching AC adapter, 5
VDC-4A output |
Charging Rate
|
16 Hour Charge: 140 mA
Pulse/Maintain: 140 mA |
Charging Time
|
16 hours nominal |
Unit Capacity
|
12 Units |
Indicators
|
Individual Charging Indicators:
Red LEDs
LEDs blink when batteries are charged |
Approvals
|
CE, WEEE, RoHS |
Weight
|
1.2 lb, excluding power supply |
BAT 026-2 AA NiMH Rechargeable Batteries
|
Package Quantity
|
2 |
Battery chemistry
|
NiMH |
Voltage
|
1.2V |
Battery capacity
|
1500mAh |
Compatibility - 1
|
BAT KT33V Charger
BAT KT63V Dual Charger Unit
FM ADA KIT 37 RCHFM ADA Compliance Kit Rechargeable
PFM 330Motiva Personal FM Listening System
PFM 330 RCHMotiva Personal FM Listening System
PFM 360Motiva Personal FM Listening System
PFM 360 RCHMotiva Personal FM Listening System
PFM 863Hearing Helper Personal FM System
PFM R33Motiva FM Receiver
PFM T36Motiva FM Transmitter
PKT D1 E08Pocketalker Ultra with earphone
PKT D1 E14Pocketalker Ultra with dual mini earbud |
Compatibility - 2
|
PKT D1 EHPocketalker Ultra with
earbud and headphone
PKT D1 H26Pocketalker Ultra with rear-wear headphone
PKT D1 N01Pocketalker Ultra with Neckloop
PKT D1-0Pocketalker Ultra (no earphone / headphone)
PKT PRO1-0Pocketalker PRO (no earphone/ headphone)
PKT PRO1-1Pocketalker PRO with wide-range earphone
PKT PRO1-2Pocketalker PRO with single mini earbud
PKT PRO1-3Pocketalker PRO with folding headphone
PPA R35-8NPersonal PA FM 8-ch Receiver
PPA R37PPA Select FM Receiver |
Compatibility - 3
|
PPA T36Personal PA Body-pack
Transmitter
R863Hearing Helper FM Receiver
T863Hearing Helper FM Assistive Listening Transmitter
WIR RX22-4NSoundPlus 4-channel Infrared Receiver |
ANT 005 Antenna
|
Use with
|
PPA T45,PPA T45NET, PPA T27
Transmitters |
Connector type
|
F-connector |
Cable type
|
RG 59 coax |
Nominal Impedance
|
75 Ohm |
Active Antenna Length
|
80" |
Cable Length
|
22' |
IDP 008 ADA Wall Plaque
|
Compatibility
|
FM ADA KIT 1 Large-Area Value Kit
FM ADA KIT 37 FM ADA Compliance Kit
FM ADA KIT 37 RCH FM ADA Compliance Kit, Rechargeable
IR ADA KIT Infrared ADA Compliance Kit |
RPK 005 Rack Panel Kit
|
Compatibility
|
MOD 232 2-channel Infrared
Modulator
PPA T35 Personal PA Base-station Transmitter
T800 Hearing Helper Base-Station Assistive Listening
Transmitter |
Weight and Dimensions
|
Dimensions (WxDxH)
|
9.45" x 9.25" x 2.72" |
Weight
|
11.9 lbs
|
