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Williams Sound FM Plus Assistive Listening System FM SYSTEMS FM 557-24

Name: Williams Sound FM Plus Assistive Listening System FM SYSTEMS FM 557-24
Brand: Williams Sound
SKU: FM 557-24
Price: 4630.00 USD
Availability: InStock

Vendor: Williams Sound

Descriptions Williams Sound FM Plus Assistive Listening System FM SYSTEMS FM 557-24 Replaces FM 457-24. The Williams Sound FM 557-24 assisted listening system – now with integrated Wi-Fi – has replaced the existing 457...

$4,630.00

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Descriptions

Williams Sound FM Plus Assistive Listening System FM SYSTEMS FM 557-24

Replaces FM 457-24.

The Williams Sound FM 557-24 assisted listening system – now with integrated Wi-Fi – has replaced the existing 457 systems for public venues. The Williams Sound FM 557-24 Plus offers both FM and Wi-Fi transmission from the same box for nearly the same cost as traditional FM systems. The Williams Sound FM 557-24 system features the cutting edge PPA TT55 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. This complete turnkey solution includes 24 PPA R37N receivers, each featuring seekbutton channel selection with access to 17 selectable wideband frequencies between 72.1-75.9MHz. The bundle includes a coax cable and rack panel kit for professional installation. The system is expendable, accommodating any number of listeners. This system complies with 2010 ADA guidelines for hearing assistance and is covered by Lifetime PLUS limited warranty.

Williams Sound FM 557-24 Main Features

Audio presets -- hearing assistance, music, voice, and custom.
Professional audio inputs: 1/4"/XLR, phantom power, line-level output jack
Includes (24) FM R37 receivers
16-bit DAC provides a 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 foot operating range
Adjustable RF power output
Professional DSP audio platform

Williams Sound FM 557-24 System Includes:

(1) FM T55 transmitter
(24) PPA R37N receivers
(24) EAR 022 surround earphones
(6) NKL 001 neckloops
(1) IDP 008 ADA wall plaque

Specifications

Note: The FM + connects to the installation location’s Wi-Fi Network. It does not provide a network on its own. The Wi-Fi network will need to be installed and established before the FM + can be used.

Dimensions

8.45″ W x 8.25″ D x 1.72″H (21.5 cm x 21 cm x 4.4 cm)

Weight

Transmitter: 3.2 lbs (1.45 kg)

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° F to +122° F (0° C to 50° C); Storage: -4° F to +158° F (-20° C to 70° C)

User Interface

3.12” High Resolution OLED display with selections via buttons. Hosted Web page. Remote control and monitoring.

Dante

Only available on FM T55 D

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

RF Section

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 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 ft (304 m) with ANT 005 coaxial antenna mounted on rear chassis connector

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 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) Transmited RF

Total Harmonic Distortion

Less than 0.25% @ 1 kHz (RF output)

Common Mode Rejection

Greater than 57 dB @ 1 kHz, Mic or Line

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

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 Ω (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

Input Levels (Bal or Unbal) (at Audio Input Gain = 0dB)

Nominal (1st Amber + 3dB LED)

Overload Warning (Displayed on Screen)

Absolute Max. Rating*

Microphone

-55 dBV (1.7 mV RMS)

-22 dBV (80 mV RMS)

+20 dBV (10.0 V RMS)

Line

-25 dBV (55 mV RMS)

+16 dBV (6.3 V RMS)

+20 dBV (10.0 V RMS)

Approvals

FCC, RoHS3, WEEE, Industry Canada

Warranty

2-year parts and labor

NOTE: Specifications are subject to change without notice.
* Stresses above these ratings may cause permanent damage or degrade reliability.

EAR 022

Style	Around-ear speaker
Plug	3.5mm mono
Cord	39"
Driver Size	23 mm
Nominal Impedance	32Ω
Freq. Response	20 - 20kHz
Weight	15g
Max Power Input	30 mW
Sensitivity	118 dB @ 1kHz

IDP 008

10-3/8" (L) x 6-¼" (W) x 1/8" (H)

PPA R37 architectural and engineering specifications

The PPA R37 receiver shall be encased in black, PC/ABS impact-resistant plastic with a hinged battery door. The receiver shall be a body-pack style and include a detachable belt-clip for hands-free operation. The receiver shall have a 3.5mm stereo/mono jack to accommodate stereo or mono low impedance earphones, headphones and neckloops. The receiver shall have a combination volume control with power on/off rotator dial. It shall have a green LED indicating battery and system status codes. The R37 shall have access to 17 preset wideband channels between 72-76MHz. Channel selection shall be made by pushing the seek button inside the battery compartment. The receiver shall have channel-lock capability.
The receiver shall have a slide switch inside the battery compartment to select disposable Alkaline or NiMH rechargeable battery operation. It shall have charger contacts on the bottom of the receiver for use with Williams Sound drop-in chargers CHG 3512 and CHG 3502. The R37 shall operate up to 50 hours with two disposable AA Alkaline batteries and up to 32 hours with two AA NiMH rechargeable batteries (BAT 026).
The receiver shall provide a maximum out of 35mW at 16ø with an earbud type earphone. The systems audio frequency response shall be 200Hz to 15kHz ± 3dB and the signal to noise ratio shall be 65dB min. The receiver sensitivity shall be 2μV or better at 12dB Sinad with squelch defeated. The R37 shall accept up to ±75kHz FM deviation and have a 75 μ s de-emphasis time constant.
The R37 shall have FCC, Industry Canada approvals and be compliant with RoHS and WEEE regulations. The receiver shall be covered by a Lifetime PLUS Limited Warranty, excluding earphones, headphones and batteries.
This receiver model shall be the Williams Sound model PPA R37.

PPA R37

Dimensions:	4.1" x 2.85" x 1.38" (104 x 72 x 35mm)
Weight:	4.6oz (130g) with batteries. 2.6oz (73g) without batteries
Color:	Black
Battery Type:	(2) AA Alkaline or 2 x AA NiMH
Battery Life:	Two (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 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 Ω
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.