Posted by: Withindale
String termination problem on this Bluthner model A? - 12/06/12 01:45 PM
The OP of Sound Problems in the Piano Forum has some metallic sounding notes in his restored Bluthner model A after a recent tuning.
Here is a recording: http://youtu.be/eJnXbRtc9B0
Del thinks the problem is probably to do with the termination at the V-bar:
Originally Posted By: Del
If the slope of the V-bar on the speaking side is too gradual the vibrating string can buzz against the bar creating just the sound you are hearing. I am currently in China and I cannot view anything on YouTube here so I can't go back and look at the string termination configuration in your piano but...if there is not pressure bar in the tenor section I'd guess (not being able to see or hear your piano) that this is where the trouble probably lies
Assuming Del is right, and bearing in mind Bluthner presumably shipped the piano with the same V-bar, I'd guess some of the new coils may be the cause of OP's problem.
Looking at the photo do you think that could be the case? There is no pressure bar in the tenor.
PS As Dan Silverwood pointed in his post below there could also be termination issues at the bridge.