My name is Mike Bellott; I have been with Audio Video since 1986. A client alerted me to this thread and suggested that I make a comment.
I’m not sure why we were included in the original post. We didn’t do any work on the house, but I would be glad to lend you a hand. We have been doing business in BCS for over 30 years and we are often asked by builders and home owners to clean up problems left by other contractors. Sadly, this is not uncommon…
Mhnatt, even though the speaker wire you mentioned sounds like it was run incorrectly, if you are hearing hum, a more common culprit would be a ground loop. I would be happy to take a look at this, or even walk you through the process for eliminating the hum. Getting wires down a wall with a fireblock can sometimes be tricky but is usually possible. I would also be glad to stop by and take a look at this whenever you like.
We are open from 10 to 6, Monday through Saturday; I am usually at the office, but if I happen to be out just leave a message. Our telephone number is 979-268-6010.