Hi all, I'm new hear and looking for some trouble shooting advise. Usually I'm over at one of the sister sites, Roadbikereview. Anyway, last night I was re foaming a woofer from a set of older three way speakers. I had the woofer out and the speaker was flat on it's back, not connected to any source, and I noticed that the Vifa midrange was making a very faint buzzing noise. I thought I was crazy, but my wife also heard it.

So how can it be carrying a signal if it's not connected to anything? Does my house have that much stray interference flowing everywhere to power a non powered speaker? And if so, what is it doing to my primary system, and can I stop it? I should note that there was a small dorm sized refrigerator in the same room about 15 feet away.

So, anyone know what could be going on here?