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Inside view of the Cathedral of our Lady building.

Project: Cathedral of Our Lady of the Angels

Product: ListenRF

A few of the acoustical challenges at the Cathedral of Our Lady of the Angels are: urban noise, the interior’s limestone, wood, and poured concrete surfaces. Combined they create acoustic challenges. Listen Technologies provided the answer to these challenges with an installed assistive listening solution using the LT-800 Stationary FM Transmitter distributing audio to listeners using the LR-500 Programmable Display Receivers. Now worshippers simply adjust the volume on their personal receivers and enjoy the enriching service.

In addition to assistive listening, their center for culture and exchange regularly holds conferences and meetings where language interpretation is necessary. Listen Technologies’ 57 channels and programmable receivers make this easy for Archdiocese officials and participants alike, as the receivers can be programmed on site to display only the channels being used. The receivers are distributed to guests along with a program telling them the channel assignments for each language. Guests can easily select the appropriate channel for their languages using the display on the LR-500 units.

The cathedral and surrounding campus also receive a number of visitors to experience the unique architecture and exquisite priceless artwork on display. The Listen LT-700 Portable Transmitter, used with individual receivers, makes the perfect solution for tour groups as they are led through the facility. Tours can also be conducted in multiple languages, thanks to the numerous channels available in the ListenRF systems. The Cathedral of Our Lady of the Angels is a perfect example of the flexibility and functionality of ListenRF systems. The same product provides high-quality, wireless audio with minimal effort for auditory assistance, language interpretation, and tour group communications

System Components

• LT-800 Stationary RF Transmitters
• LA-122 Universal Antenna Kit
• LT-700 Portable Display RF Transmitters
• LA-278 Behind-the-Head Microphones
• LR-500 Portable Programmable Display RF Receivers
• LA-164 Ear Speakers
• LA-311 16-Unit Portable RF Product Charging/Carrying Cases


The $189.5 million Cathedral of Our Lady of the Angels was built for the Los Angeles Archdiocese. It features a campus over 64,000 square feet and a monumental structure that can accommodate 3,000 parishioners in the main sanctuary. It is located in the heart of Los Angeles, right off the Hollywood Freeway.