| Business | Phone |
| Audio Composite Engineering 1021 W Mission Ave, Escondido 92025 | (760) 741-3787 |
| Tekk 3 2151 Enterprise St, Escondido 92029 | (760) 233-0196 |
| Turner Video Svc 1291 Simpson Way, Escondido 92029 | (760) 432-8325 |
| Protec Audio Alarms & Auto 1315 Las Villas Way, Escondido 92026 | (760) 542-5270 |
| Palmer Projection Svc 1108 S Escondido Blvd, Escondido 92025 | (760) 745-5512 |