Well, the sofa is not magical
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The wire runs parallel and may have some connection with the couch? When weight is on that one spot something is happening. He insists it only happens on that one spot. I cannot believe that the center is so directional that only that one spot is where it is heard.
Maybe another question for him to answer?
Actually, looking at his post again
I notice the center channel cutting out when someone sits down in a certain area on my sofa
he can hear it from another location when someone sits in a certain spot. That is how I read his post. I asked and he confirms that only that spot affects the speaker. So, with this info, I have to highly suspect the sofa in a manner yet to be discovered, no?
What do you think?