WILLIAMS AV FM 558 Plus Large-area Dual FM and Wi-Fi Assistive Listening System with 4 FM R38 Receivers FM 558 FM 558 FM 558 FM 558 FM 558

The groundbreaking WILLIAMS AV FM 558 Plus FM Plus Large-area is a Dual FM and Wi-Fi assistive listening system with 4 FM R38 receivers. Features coaxial cable and rack panel kit for professional installation. provides the industry-first choice of using traditional FM receivers or using personal electronic devices over Wi-Fi for hearing assistance. Along with this flexibility comes exceptional audio quality, as the FM + is built on a professional digital audio (DSP) platform.

The new FM + is designed to support those who want to use their own 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 + supports the iOS and Android WaveCAST Apps and the Wi-Fi Receiver-- in addition to all of the current and legacy Williams Sound FM receivers operating on the 72-76 MHz bandwidth.

Developed for hearing assistance in public venues, the FM + includes a complete audio processor optimized for the needs of hearing impaired people and are easily integrated with an existing sound system, or used with a microphone as a stand-alone system.

Features:

• 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

Specifications:

• ant 005
• Use with: PPA T45,PPA T45NET, PPA T27 Transmitters
• Connector type: F-connector
• Cable type: RG 59 coax
• Nominal Impedance: 75 Ohm
• Total Cable Length: 22 ft
• Active Antenna Length: 80 in
  ear 022
• Style: Around-ear speaker
• Plug: 3.5mm mono
• Cord: 39"
• Driver Size: 23 mm
• Nominal Impedance: 32?
• Freq. Response: 20 - 20kHz
• Weight: 15g
• Max Power Input: 30 mW
• Sensitivity: 118 dB @ 1kHz
  fm t55
• 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)
• Dante: Only available on FM T55 D
• Color: Black/Silver with silver legends on the front, white legends on the back
• Rack Moun: Standard 19" Rack, one EIA rack space high, 1/2 space wide
• 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
• Temperature RangeOperating: +32° F to +122° F (0° C to 50° 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
  RF Section
• Operating Frequencies: 72.1-75.9 MHz , 17 wideb& 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
  Audio Section
• Audio Processor Functions: DSP based; Compression: 1: 1, 1.5: 1 or 2: 1; High-pass & Low-pass Filter Frequency control
• Frequency Response: 31-16000 Hz, 3 dB (re: 1 kHz, Ý3 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
• Line Output: RCA jack