Who we are
Diversified Telecommunications is an owner-operated audio-visual and low-voltage company run by Jose Cosio and based in Covina, CA. We install and set up the systems people use every day at home and at work — TVs, home theaters, speakers, Wi-Fi, security cameras, and the wiring behind all of it.
What we do
Home theater and media rooms, TV mounting, surround sound, whole-home and outdoor audio, structured wiring and network cabling, Wi-Fi and home networking, security camera systems, and business AV and phone systems.
We work with Samsung, Sony, Denon, Yamaha, Sonos and other major brands, and we're happy to build around equipment you already own.
How we work
Every job starts with a free on-site estimate. We look at the room, the walls and how you'll use the system, then give you a written quote. On install day we protect your floors and furniture, hide the wiring wherever the house allows, and test everything before we leave.
Where we work
We serve homes and businesses within about 35 miles of Covina — Covina, West Covina, Glendora, Azusa, San Dimas, Baldwin Park, Pasadena, Arcadia, El Monte, Diamond Bar and the rest of LA County.