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Inside a cello

1075 Views 17 Replies 8 Participants Last post by  krazeeartist
I found this photograph a few days ago and found it very interesting. It is the interior of a cello. I'd forgotten that there is a stick jammed between the front and back, which seems to have a lot to do with sound production. I know violins, although much smaller, have very similar construction. You luthiers will enjoy this, but I think anyone interested in fine woodworking will find it interesting.
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Here's a discussion of the complexity and anatomy of the wood parts you see here:

What Is the Purpose of a Soundpost in a Violin?
The soundpost holds up the top plate of the violin and supports the treble foot of the bridge (the side of the bridge that holds the A and E strings). The soundpost helps give the violin a fuller sound by transferring the vibrations from the higher two strings from the front of the instrument to the backplate.
Thanks to the soundpost, the whole instrument vibrates and makes a sound, rather than just the top.
The left side of the bridge is supported by the bass bar – a strip of wood glued on the underside of the top plate directly below the bass foot of the bridge (the side of the bridge that holds the G and D strings). The bass bar runs parallel to the lower two strings and helps transfer vibrations through the instrument, similar to the soundpost.
Without the soundpost and bass bar, the top of the violin could very likely cave in from the pressure of the bridge and strings! These two smaller inner parts of the instrument are vital.

The soundpost stays in place from the pressure of the top and bottom plates of the violin. There’s no glue involved! For this reason, we should never remove all four strings at once – this takes off a lot of the tension that keeps the soundpost in place, and it can fall.

Never attempt to move or replace your own soundpost – this should always be done by skilled luthiers! If the length of the soundpost is too tall, it can separate the top and bottom plates of the instrument, causing lots of problems down the line. If the soundpost is too short in length, it won’t stay in place.

I also found this diagram of a violin showing the placement of the parts.
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Here's the website. Violin Soundpost: The Soul of the Instrument - Violinspiration

The average thickness of the wood on the front and back of a violin is between 2 and 2.7mm. That is very thin, which is so it can vibrate. There are 120 separate wood parts in a violin. There is speculation about why Stratavaru has such a rich sound. Turns out there are a number of factors that go together. The Maple they used grew during a very cold period in Europe, which means the growth rings and wood density was extremely high. Stratavari also had a secret recipe for soaking the wood he used, as well as his formula for finishing the instrument.

Many modern instruments have sound quality that competes with the Stratavari instruments, but they are still mostly hand made. Same applies to cellos and violas.
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I talked to him late last year. He's been better but still kicking, or was then.
Haven't heard anything in a long while about Stick and the other members who moved on. Hope they are all well. Miss them.

And it is a stick, until it is fitted into the instrument, then it becomes a sound post.
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Just like the back/sides/top/neck/fingerboard were all just a tree at some point until someone carved them into shape and glued them together to form an instrument. It's ok, Tom, you can call it a stick if you want to - I'm just picking on you. :)
That's OK, as long as I get to pick back. This whole thing just fascinated me. I love the sound of a violin. Even a fiddle will do. I once did a consultation in Nashville and there was a young assistant who was a bluegrass fiddler. She brought her instrument in and played one of the classic country tunes. She sure could make that thing sing.

Must have had a good stick in it.
Same thing, it just depends on who's playing as to whether it's a fiddle or a violin. I have an old Roy Clark album where he says, "This is a violin. It's fixin' to become a fiddle!"

LOL! Yep, that'll do it! :D
BTW, the other night I discovered old Jack Benny programs on my Kindle Fire. This particular program had him playing the hick head of a musical family in the Ozarks. He had his violin with him and I'll be darned, he did an amazing job at fiddlin' on a country music song. I knew he payed the violin, but didn't remember that he was very good at it.

I have a funny streak that shows up occasionally, and I learned to do it by watching and admiring Jack Benny. The scene where the crook demands his money or his life, and that long, long take of which he was the master. The robber demanded, "Well? Your money or your llife?" and Benny replies "I'm thinking about it." Believe it or not, I did a LOT of theater in my youth, and was really good at comedy, which is all about timing, and no comedian has ever been better at that than Jack Benny.

AMazing, it's on YouTube!
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Wow. Learn something new every day!
A dozen posts already. You must like it here.
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