Violin Sound Post Position. The default position for the soundpost is about 25 mm behind the treble foot of the bridge see Fig 1 You should aim to reach this position before adjusting the soundpost to change the sound You should aim to reach this position before adjusting the soundpost to change the sound.
The general guide for sound post placement for full sized violins is that the near (front) side of the sound post should be 1/8″ { 1/2 the diameter of the sound post} behind the back side of the bridge and centered on the right foot of the bridge or perhaps slightly outboard from this position but inside the outside border of the right hand bridge foot.
The violin making manual Soundpost
The sound post also can alter the tone dramatically and completely change the sound depending on the position or angle Sometimes the musician thinks it’s the strings or his own playing that is the reason for the violin performing poorly.
Sound Post Adjustment violin
The soundpost was always placed 5 mm from the line of the rear face of the bridge The horizontal position was measured from the inner edge of the treble soundhole Two positions were used one inside the treble foot of the bridge and one outside.
Bridge And Post Veneers Joseph Curtin Studios
All You Need To Know About The Sound Post – Fiddlershop
The Effect of the Soundpost on Violin Sound
Proper Bridge & Soundpost Positioning Violin Pros
To ensure it is in its proper straight position first hold the instrument up and look straight at the bridge making sure it’s standing at a right angle It should be straight and parallel to the fingerboard and centered between the fholes The feet of the bridge should lay flat with the belly of the violin.