Home Theater, Audio & Networks, Installed Right.
TV mounting, surround sound, whole-home audio, Wi-Fi, security cameras and low-voltage wiring — installed cleanly and set up properly by a local owner-operated company in Covina, CA.
Serving Covina · West Covina · Glendora · Azusa
Call (626) 827-4710Request Your Free Estimate
About Diversified Telecommunications
Diversified Telecommunications is an owner-operated audio-visual and low-voltage company run by Jose Cosio in Covina, CA. We install home theaters, TVs, surround sound, whole-home audio, Wi-Fi networks, security cameras and the wiring behind them for homes and businesses across LA County.
We work with the brands people already trust — Samsung, Sony, Denon, Yamaha, Sonos — and we do not leave until everything works and you know how to use it.
- 8 Services offered
- 10+ Communities served
- 35 mi Service radius
Why the San Gabriel Valley Calls Diversified Telecom
The things that actually change how an install goes.
Wiring you never see
Cables go inside walls, ceilings and attics wherever the house allows, with clean wall plates — not draped across the floor or stapled along the baseboard.
Set up and shown how to use it
We calibrate, program the remote or app, and walk you through it before we leave, so the system gets used instead of collecting dust.
Home and business, one call
The same team handles the living room TV, the backyard speakers, the office network and the shop's security cameras.
Our Home & Business Services in Covina, CA
Free estimates and honest recommendations across Covina and the rest of LA County.
Home Theater Installation
Dedicated theater rooms and media rooms designed, wired and calibrated — screen, projector, speakers and seating layout planned together.
Learn MoreTV Mounting & Installation
TVs mounted securely on drywall, plaster, brick or over the fireplace, with the cables hidden in the wall and everything set up before we leave.
Learn MoreWhole-Home Audio
Music in every room you want it — in-ceiling and in-wall speakers, Sonos and multi-room systems, controlled from your phone.
Learn MoreSurround Sound Systems
5.1, 7.1 and Dolby Atmos systems for living rooms and media rooms — receiver, speakers, subwoofer and wiring set up and balanced.
Learn MoreStructured Wiring & Cabling
Low-voltage wiring for homes and businesses — Cat6 network runs, coax, speaker wire and HDMI, terminated cleanly and labeled.
Learn MoreWi-Fi & Home Networking
Fix dead zones and slow Wi-Fi for good — mesh systems, wired access points and properly set-up routers for homes and small offices.
Learn MoreSecurity Camera Systems
HD security cameras and video doorbells for homes and businesses, wired, mounted and set up so you can see everything from your phone.
Learn MoreBusiness AV & Phone Systems
Conference room displays, background music, digital signage and business phone systems for offices, shops and restaurants.
Learn MoreNot sure what you need? Tell us about the room or the problem and we'll point you to the right fix.
Frequently Asked Questions
Do you work on homes and businesses?
Yes. We install home theaters, TVs and audio in homes, and conference room displays, background music, cameras, networks and phone systems for businesses.
What areas do you serve?
We're based in Covina, CA and work within about 35 miles — including Covina, West Covina, Glendora, Azusa, San Dimas, Baldwin Park, Pasadena, Arcadia, El Monte, Diamond Bar and other LA County communities.
Are estimates free?
Yes. We come out, look at the space, talk through options and give you a written quote with no obligation.
What brands do you install?
We install and set up equipment from Samsung, Sony, Denon, Yamaha, Sonos and other major brands, and we can work with equipment you already own.
Areas We Serve Near Covina
Within about 35 miles of Covina — the same standards in every city.
- Covina, CA
- West Covina, CA
- Glendora, CA
- Azusa, CA
- San Dimas, CA
- Baldwin Park, CA
- Pasadena, CA
- Arcadia, CA
- El Monte, CA
- Diamond Bar, CA
Get a free estimate in Covina, CA
Free on-site estimate, written quote, no obligation — and a straight answer about what your space actually needs.
- Serving Covina, West Covina, Glendora, Azusa and more of LA County