Amazing. In a quite room in my house, I cannot hear any difference between the BG250 on vs off.
From what I hear, it bowls me over that it has a fan.
I can't either. The noise isn't audible unless you put your ear right up to the cabinet.
One question I do have though is what amount of audible output are you guys getting from that tweeter? I'm not really hearing anything coming from it even playing in a high register with the treble dimed.
That's the only concern that's developed so far. Is that thing actually working and is there a way to better test it?