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Well, thanks! That's very helpful. So how does a really wide bridge affect things? Lately I've got bridges several inches wide and am thinking that is making things louder. However, again, since I have never built the same thing twice, apples to oranges . . .
(My fiddle is coming along, slowly, but coming along . . .)
Amen, Steven.
What you said was elegant in its simplicity.
i am a novice player and a novice cbg builder. I am, however, in my Golden Years, as 'they' say.
To my eyes and ears, what you said was particularly profound...it is very commonly ignored, perhaps because of its very simplicity.
"Look carefully at traditional acoustic instruments that work well.
Notice the various dimensions mentioned above in relation to each other.
Try to emulate these proportions in the instrument you are building.
It is the relationships of these factors that count, not the exageration of any one of them".
thanks for voicing that...zan.
this is actually a response to Mark aka Junk Box Instruments.
i posted it as a blog, but it has not appeared...sooo...
Mark wanted to know more about what i said about proportions... and do i measure or eyeball it ?
I do measure, but eye-balling is ok, too.
My basic premises are these:
'the box' is an amplifier.
'the stick', with hardware, is The Machine.
Why Proportions ?
the most efficient way to get the Box and/or Stick to resonate or 'amplify,' is to 'feed' them 'vibrating lengths' to which they might be most sympathetic....
this minimizes the energy needed to 'push' them to getting them to vibrate and to keep them vibrating.
The Box:
the length of the box is my Basic Unit... i generally round that out to an average between the inside length of box and outside length.
my Scale Length is a WHOLE NUMBER multiple of the Basic Unit.
eg: if BU is 8 inches, Scale Lengths would be 1,2,3,4,5,etc, times as long as the box...... 8 inches, 16 inches, 24 inches,32 inches, and 40 inches, etc.
The Stick:
i choose, or calculate a Scale Length...
i divide that Scale Length value by 4 to get a Stick Unit.
eg: 16 inch Scale Length = 4 inch Stick Unit.
Total Stick Length is equal to 6 Stick Units.
1 Stick Unit is headstock.
4 Stick Units from nut to bridge...(Scale Length).
1 Stick Unit from bridge to tail end.
The Result:
Scale Length is both proportional to the Box and proportional to the Stick .
the possibility of resonance is enhanced;
the possibility of dampening is reduced.
.....resonance is the most efficient way to transfer energy.
To Finish:
a person could place the center of the box directly under the bridge.
i prefer to mount the box so that the bridge sits from 2/3 to 3/4 of the way down the length of the box towards the tail....
i use movable bridges...
experimenting is a great part of this adventure...
i measured LOTS of instruments to see what their proportions were... then, i experimented lots.
thanks for asking, Mark...........zandi z.
Zandi Z said:Amen, Steven.
What you said was elegant in its simplicity.
i am a novice player and a novice cbg builder. I am, however, in my Golden Years, as 'they' say.
To my eyes and ears, what you said was particularly profound...it is very commonly ignored, perhaps because of its very simplicity.
"Look carefully at traditional acoustic instruments that work well.
Notice the various dimensions mentioned above in relation to each other.
Try to emulate these proportions in the instrument you are building.
It is the relationships of these factors that count, not the exageration of any one of them".
thanks for voicing that...zan.
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