More ramblings, mainly so I can remember what's in my head. 😉
The best place for a soundpost if needed?
A doublebass has a bassbar running from just below the neck joint to around the tailpiece height on the bass side and a soundpost on the treble side. One foot of the bridge is over the bassbar which distributes the tension of the strings over the soundboard, the other foot of the bridge is over the soundpost which transfers vibrations to the rear of the bass, except that the soundpost is normally not directly under the treble foot and if moved around to fine tune the sound of the bass, too close to the bridge foot can choke the vibrations, it's a fine art I don't claim to fully understand.
With this little knowledge, yeah I know, dangerous, I wonder where the best place would be on this Aria for a soundpost, and would it be detrimental to sound or an improvement?
The Aria has an X brace which crosses about 30mm in front the the bridge, the edges of the bridge sit on this brace. A single soundpost could go directly under the centre of the saddle or under the cross point of the X brace. A pair of posts could go under the braces where the bridge sits but I then have to balance two posts tension so one doesn't fall out, so I'll stick with one for now.
A DB sounds worse without a soundpost but acoustic basses don't have them so I assume they won't improve the sound, else someone would be fitting them, right? So we can rule out the sound improving by transferring vibrations to the back and say it'll just be for strength. But too stiff will stop the soundboard vibrating properly and deaden the sound. So I wonder if the post would be best directly under the bridge or the X brace in front of the bridge? Which needs to vibrate freely the most?
It's no wonder I can't sleep at night. 😆