The Bass Bar

The bass bar is an important part of the harmonic system of a bowed instrument. Special care must be taken to correctly fit it perfectly to the contour of the inside arch, and then to adjust it acoustically. A few points of interest:
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• It is fitted and glued to the underside of the top, running most of its length.
• It is under the bridge foot on the side of the lowest frequency strings, the “bass” side.
• It has both acoustical and structural function, much like its counterpart on the treble side of the instrument, the sound post.
• It is installed before the top is glued on (unlike the sound post which is fitted & installed through the f hole of the completed instrument just before the bridge work is done).