You probably wouldn't get this chance if they operated out of a garage. The company you choose should have a warranty on workmanship, and this should be for at least ten years. The company should be certified and its workers should be trained. Some warranties for products do not apply if the purchase was made from a dealer not authorized by the manufacturer. Check with the company you are considering to find out if they are authorized dealers for the products they sell.
Referrals are the best testimonials.
You may not know exactly what they need to get the job done, but check to see if they have such things as a digital spectrum analyzer, digital RF meters, and so on. Ask for brochures, catalogs, and other such literature. This will give you written-out information that you can peruse at your leisure. Be cautious with those who say they do it all. Oli Gulyas of Innovations in Home Theater is a member of the Greater San Antonio Builders Association Remodelors Council.