A single note fails to vibrate correctly- violin broke ?
Hi. I bought a used Chinese made scherle roth violin. The original price was 300 USD so it's a low end instrument. The notes all sound fine except the A string's c sharp note. When I play it it vibrates abnormally with cross tonality. In other words imagine hitting c and csharp on a piano at the same time - that's how it sounds.
This isnt a case of me putting any vibrato on the string through my bow or finger pressure. This isnt a case of accidentally hitting the E string at the same time. It doesnt occur on other notes. It does occur on the lower d string at the 11th "fret" which is the c sharp there.
Naturally I replaced the string and examined the head and bridge and soundboard for imperfections but cannot locate the source of the jittering sound.
Any thoughts? Playing D or C sounds fine but the Csharp whirls like a helicopter sound when it takes off.
That's called a "wolf tone", and it's awful for it to occur where you have it.
A luthier may charge more than the price of the instrument to cure this.
Adrian -- that's the usual "easy fix" (if there is one), but I've always wondered why that particular spot.
I found this zone by trial & error. With the violin on my lap and a small clamp to on the A-string to try different notes, I could bow while pressing gently on different parts of the violin. The notes around A,B,& C seem to come from large areas of the top plate, but particularly the part I described.
Many thanks for all the comments. I will do some research on the wolf tones and try some of these recommendations! Very fascinating effect physics wise - if only I could turn it off and on at will. Will try to remove
A few random thoughts (late at night - yawn!) . . .
$300 for a violin is so cheap you should be glad you only have one bad note.