General
Information |
Manufacturer
|
Williams Sound |
Manufacturer Part
Number |
FM 557-24 PRO |
Product Name
|
FM Plus Large-Area Dual FM And
Wi-Fi Assistive Listening System With 24 FM R37 Receivers,
Features Coaxial Cable And Rack Panel Kit For Professional
Installation, Includes Transmitter, Receivers, Surround
Earphones, Neckloops, 12-Bay Chargers, AA NiMH
Rechargeable Batteries, Remote Coaxial Antenna, ADA Wall
Plaque And Rack Panel Kit, Replaces FM 457-24 PRO
|
UPC Code |
|
Overview |
The Williams
FM 557-24 PRO is an FM Plus Large-area Dual FM and Wi-Fi
assistive listening system with 24 FM R37 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 Dante interface provides integrators with a
fully digital audio networking solution. It is based on
the Audinate UXT Ultimo chipset. This chipset supports
both AES67 and SMPTE 2110. Dante’s Ultimo UXT support of
AES67 and SMPTE 2110 allows integrators multiple audio
options to chose from for greater interoperability with
other audio equipment with their system design. This
allows the FM Plus Dante to be controlled by the Dante
Controller - the easy-to-use software from Audinate for
setting up and managing audio routing of Dante-enabled
products on an audio network
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 |
Professional audio
inputs: 0.25"/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
1m cord
Monoaural
32 ohm
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 Assistive Listening System
with 24 FM R37 Receivers |
System Includes
|
1 FM T55 Transmitter
24 PPA R37N Receivers
24 EAR 022 Surround Earphones
6 NKL 001 Neckloop
2 CHG 3512 12-Bay Chargers
24 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 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 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, 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 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 Remote Coaxial 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)
|
8.45" x 8.25" x 1.72" |
Weight
|
22 lbs
|