There is a buzz, and I want to find out where it is coming from. It is a great mystery. I am creating a list of the things I have checked and it is not. Please don't suggest taking to a luthier. I want to know what a luthier would do. That is why I am posting. This is an extremely loud and resonate violin. It is older, likely ca. 1880.
The sound occurs with volume. Doesn't matter so much the note. The sound is coming from the tailpiece area, but it could be something near the tailpiece as well.
It is not the nut or fingerboard. The buzz happens with volume on most double stops. Full stop pizz etc. I have had many violins with buzzes in this area. I can tell from playing. The fingerboard and nut are excellent.
It is not the pegs. They are tight. The sound is not coming from this area.
It is not the strings. I have changed them all. It is not the ends of the strings. I have thoroughly exhausted that. Testing and changing them one by one. I am still using ball end strings though.
It is not the bridge gaps. I have tried the strings on different points.
It is not the bridge feet. They look mostly well fit. I have moved the bridge as an experiment. I have even changed the bridge.
It is not the tailpiece or the tailgut. I have changed them both out. Removed fine tuners.
It is not the chinrest. I have removed it.
So, I feel it is time to check the body.
It is not the seams, they are airtight all around.
It is not the saddle. It has fairly deep grooves, but putting my finger on it does not diminish the buzzing.
The saddle itself is well fit and nicely glued in place.
I have adjusted the soundpost. It is a nice fit and after making several adjustments. I am confident that's not what it is.
The purfing looks all good.
There is nothing inside the violin. I even shook some rice in it.
I took off the setup(strings/tailpiece/bridge) to listen to the violin with tapping. No buzzing. Is there a way to tell if it is the bass bar? It sounds different when I tap along it, as I feel it should. But, of course, I haven't taken off the fingerboard.
It does have a repaired crack on the face that is airtight and taps very well. The tapping sound is good on and near the crack. It seems like a excellent repair. It is on the treble side, not near the soundpost.
The buzz does sound metallic, maybe all buzzes do though.