Personal PA® FM Listening System, Model PPA 575

Bid Specs:

PPA T35 Transmitter

The PPA T35 transmitter shall be microprocessor controlled with push button configuration. It shall have an operating range of up to 1000 feet. It shall have 10 wideband and 7 non-standard wideband channels operating on 72.1-75.9 MHz. It shall have 77 narrowband channels operating on 72.025-75.975 MHz.

Front Panel:

The PPA T35 shall have a push button controlled LCD digital display. There shall be three pre-configured (selectable) application presets: Hearing Assist, Music and Voice. Configurations for Bandwidth, Frequency, Audio Input Source (Microphone, Line, Simplex), High Pass Filter, Low Pass Filter, Compressor Slope, Compressor Gain and RF Output Power shall be push button controlled. The audio level shall be adjustable by push button control. There shall be a 10 LED array showing +9 to -18 at 3 dB intervals. The PPA T35 shall have a 1/4" phone jack with push button volume con- trol. It shall have push button control for monitoring source audio or transmitted audio. It shall have an input overload indicator. It shall have a “on” indicator and power button.

Rear Panel:

The PPA T35 shall be powered by 24 VAC power supply via a 3-pin Molex® connector. It shall have a 75 ohm F-connector antenna. It shall have a “rubber duckie” antenna on the top panel directly connected to the circuit board. The transmitter shall have an RCA line output jack. It shall have a combination 1/4" phone/XLR audio input jack. It shall have an RF “Off” timer that turns off RF signal after 1 hour of no audio activity.

The PPA T35 shall have FCC approval and be powered by UL and CSA power supply. It shall have a five-year parts and labor warranty. It shall be compatible with Williams Sound FM equipment operating on 72-76 MHz. The transmitter shall be a Williams Sound Corp. model number PPA T35.

PPA R19 or R19-6 Receiver

The receiver shall be encased in a blue, polypropylene impact-resistant plastic with a single hinged door for battery installation. The receiver shall be a body-pack type and have the option for a belt-clip case for hands-free operation. The receiver shall have a 3.5 mm mono phone jack and accommodate low-impedance mono earphones, headphones, and neckloops telecoil couplers. The receiver shall have a combination volume control and power on/off rotator dial, and a green LED power “on” indicator. The receiver shall be crystal controlled to reduce frequency drifting. The R19 receiver shall have 10 available channels: Two channels shall be selectable by a 2-position slide switch and pre-tuned from 72-76 MHz. The R19-6 receiver shall have six channels pre-tuned from 72-76 MHz and adjustable by a channel rotary dial. The receiver shall have an adjustable 3-position tone control switch to select Low (20 Hz), Mid (120 Hz), or Hi (700 Hz) operation. The receiver shall operate up to approx. 100 hours when using 1.5 V AA Alkaline batteries, and shall operate up to approx. 50 hours when using 1.5 V NiMH rechargeable AA batteries.

The receiver shall receive FM signals in the 72-76 MHz audio assistance band with 300 µS de-emphasis. The receiver shall provide a maximum output of 35 mW at 16 ohms with an earbud-type earphone. The system’s electrical fre- quency response shall be 100 Hz to 5 kHz, ± 3 dB and the signal-to-noise ratio shall be 50 dB at 10 µV. The receiver shall have a sensitivity of 0.7 µV at 12 dB Sinad.

The receiver shall be covered by a five-year parts and labor warranty, excluding earphones, headphones, batteries and chargers. The receiver model shall be the Williams Sound Corp. model PPA R19 or model PPA R19-6 receiver model shall be the Williams Sound Corp. model PPA R30.

NOTE: SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE!

Williams Sound ®

©2005, Williams Sound Corp. CAT 102B

Helping People Hear

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Williams Sound PPA 575 specifications Bid Specs, PPA T35 Transmitter, PPA R19 or R19-6 Receiver
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PPA 575 specifications

The Williams Sound PPA 575 is an advanced personal listening system designed to enhance audio experiences in various environments, from classrooms to theaters and outdoor events. This device stands out for its user-friendly features and robust technologies, offering impeccable sound quality and versatility for users needing assistance with hearing.

At the core of the PPA 575 is its reliable FM technology, which operates at a frequency range of 72-76 MHz. This ensures that users receive clear transmissions without interference from other electronic devices, making it particularly effective in crowded settings. The system is engineered to deliver a strong, distortion-free audio output, allowing users to engage fully with presentations, performances, or conversations.

One of the defining characteristics of the PPA 575 is its compact and portable design. Weighing just a few ounces, it can be easily carried or worn around the neck using the supplied lanyard. The unit features a simple interface with clearly marked buttons, enabling users to adjust volume levels effortlessly. Additionally, the PPA 575 is equipped with a built-in speaker and a headphone jack, providing flexibility in listening preferences.

Another key feature is its compatibility with various receivers, including the PPA R37 and PPA R38, allowing several users to connect simultaneously. This scalability makes it an ideal choice for group settings, ensuring everyone receives the same high-quality audio experience. Furthermore, the PPA 575 operates on standard AA batteries, which offer extended usage time, enhancing its practicality for long events.

The system also includes advanced technology, such as automatic gain control, which adjusts the audio output based on the input signal, ensuring consistent sound quality. With excellent range and battery life, the PPA 575 ensures that users experience minimal interruptions during critical moments.

In conclusion, the Williams Sound PPA 575 is a versatile and reliable personal listening system that provides essential auditory support in various settings. Its combination of user-friendly features, cutting-edge technology, and superior sound quality makes it an invaluable tool for individuals seeking to enhance their listening experience while ensuring accessibility to sound. This product represents a significant step forward in personal assistive listening devices, making communication clearer and more inclusive for all.
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