Hi, this is my first post to any of the forums here and I hope it is okay for a nontechnician to post a question in this forum. Forgive my general lack of knowledge about piano acoustics, voicing etc.
I have a baby grand (it's a Boston GP-163 if that matters), about 10 years old. There's one note, B3, that sounds annoyingly different from the other nearby notes in the lower register. I would best describe it as "boomy". It almost sounds like the tone is being masked by an accompanying boom sound or source of resonance coming from somewhere. It's not loudness per se (if I play it softly, I hear a soft boom). I don't hear anything similar with any other keys. The issue is present regardless of the position of the lid.
I am not sure if the issue was always present but I think it has been for a long time (the piano has basically been in the same spot in the same room since I purchased it 10 years ago). I remember being aware of it and bothered by it years ago but I put it out of my mind, in part because I wasn't playing the piano much. Recently I have started playing much more and so the issue is starting to annoy me.
I have an appointment with a tuner/technician for a regular tuning in a few weeks and thought to ask him about it. That tuner claims to be experienced with voicing on his website. No previous tuner has mentioned it but then again I myself didn't bring it up with them.
Does it sound like this is a room acoustics thing or a flaw in the piano itself? If the latter, is it something that could be corrected? Even if it is a room acoustics issue, which I probably couldn't easily solve, would voicing be able to mitigate the issue somewhat? (I have experimented a little with putting a rug under the piano, putting several pillows under the piano, but this has no effect on the issue.)