Williams Sound FM 557 PRO D FM+ Assistive Listening, 4 Receivers and Rack Kit + Dante

Williams Sound FM 557 PRO D FM+ Assistive Listening, 4 Receivers and Rack Kit + Dante

$2,230.00

Description

Williams Sound FM 557 PRO DFM+ Assistive Listening, 4 Receivers and Rack Kit + Dante

 

Part of the FM+ Assistive Listening Systems lineup from Williams Sound, the FM 557 PRO D is an FM+ Large-area Dual FM and Wi-Fi® assistive listening system that includes (4) FM R37 receivers. Similar to the FM 557 PRO system (sold separately), it adds Dante™ compatibility, and includes coaxial cable, and rack panel kit as well, enabling professional installation.

FM+

This groundbreaking tech provides an industry-first choice of employing traditional FM receivers or using personal electronic devices over Wi-Fi for hearing assistance. Along with this versatility comes exceptional audio quality, as FM+ is assembled on a professional digital audio (DSP) platform. This technology is designed to support those who want to use their own smartphones and headphones for a more discreet assistive listening experience. Simplicity and flexibility is also available for those who prefer a more traditional assistive listening system with a dedicated FM receiver and headset. Now, venues will no longer need to choose between providing FM or Wi-Fi assistive listening systems. FM+ supports the iOS and Android WaveCAST Apps as well as the Wi-Fi Receiver– in addition to all of the current and legacy Williams Sound FM receivers that operate on the 72-76 MHz bandwidth.

Applications

Assistive Listening • Interpretation • Audio Description • Presentation • Education/Training

FM 557 PRO D Includes

  • (1) FM T55 D transmitter
  • (4) PPA R37N 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-mount kit

System Features

  • Professional audio inputs: ¼”/XLR, phantom power, line level output jack
  • Audio presets — hearing assistance, music, voice and custom
  • 16-bit DAC provides 48 khz sample rate
  • 10-segment LED bar graph
  • Dante input

FM Plus Specifications
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 +104° F (0° C to 40° C); Storage: -4° F to +158° F (-20° C to 70° C)
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
Dante Only available on FM T55 D
User Interface 3.12” High Resolution OLED display with selections via buttons. Hosted Web page. Remote control and
monitoring.
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 µsec
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,
Music, Voice and Hearing Assistance Audio Presets
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 >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 kΩ resistors to analog combo jack: Pin 2 and Pin 3 on XLR jack, or tip and
ring on 1/4” TRS jack

Additional information

Weight 1 lbs
Dimensions 10 × 10 × 5 in

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