ScotPiper Posted January 23, 2020 Report Share Posted January 23, 2020 Hi, all. What might be the tonal effects on a new-made violin of ribs that taller? Let’s say the ribs are closer to 31mm, or perhaps 31.5mm. Also, might it make a violin more susceptible to C-C# wolfs? Thanks in advance for sharing your experience, opinions, and musings. Bob Quote Link to post Share on other sites
Greg Sigworth Posted January 24, 2020 Report Share Posted January 24, 2020 Those heights are not too great. Of more importance would be the thickness of the ribs. If the ribs height near the heal of the neck is great it might make playing more difficult. The biggest effect would be on the Ao air resonant frequency. Arching height will also effect that. 280 hz is a normal frequency for the Ao air resonance. A greater air volume in the corpus will decrease the frequency. It is similar to the note when one blows over a pop bottle. More air volume decreases the resonant note. Blow across the f whole and you can hear the note. Quote Link to post Share on other sites
The Violin Beautiful Posted January 24, 2020 Report Share Posted January 24, 2020 If the ribs are tall enough, the instrument will sound more like a viola. The increased height means there’s more air volume in the body. This is one of the main reasons why a 14” viola isn’t just a 4/4 violin with viola strings. Quote Link to post Share on other sites
jacobsaunders Posted January 24, 2020 Report Share Posted January 24, 2020 Many 18th C Austrian violins had high ribs, up to ca.33mm is not unusual. Some, like Meinrad Frank even had occasionally up to 36mm. It is a constant cause of annoyment when one comes across one of these that some moronic “violin improver” has planed them down to the “proper” height. Once I had a Meinrad Frank meeting with several of his instruments, and Segio Luca tested them all intensively. The conclusion was that “high” ribs, or planed down ones, puncto sound doesn’t make a blind bit of difference Quote Link to post Share on other sites
Michael Darnton Posted January 24, 2020 Report Share Posted January 24, 2020 The "Cannone" del Gesu has high ribs and no one has ever accused it of sounding like a viola. Quote Link to post Share on other sites
Peter Lynch Posted January 24, 2020 Report Share Posted January 24, 2020 An interesting observation made by Bruce Carlson in an interview / article I did for the Michigan Violinmakers Association newsletter on the Cannon was that the thickness of the ribs of the Cannon (high ribs) might be misleading in that Del Gesu used a toothed plane on the inside and so the thickness printed in Biddulph book would be to the " peaks" of the channels made by the plane blade and the weight / stiffness would be different if they were a "solid" thickness Quote Link to post Share on other sites
Salve Håkedal Posted January 24, 2020 Report Share Posted January 24, 2020 2 hours ago, jacobsaunders said: ... The conclusion was that “high” ribs, or planed down ones, puncto sound doesn’t make a blind bit of difference Thank you. I agree. But it's nice to hear it from someone like you! Quote Link to post Share on other sites
MANFIO Posted January 24, 2020 Report Share Posted January 24, 2020 As Michael Darnton pointed out, the Cannone has high ribs, as well as the Carrodus, they still have the original thicknesses on their tops and backs. I think that other Del Gesù violins that had their plates thinned had their ribs reduced in height at the same time to avoid wolves, hollow sonority and slow response, and that occurred to the majority of DG violins. Quote Link to post Share on other sites
ScotPiper Posted January 24, 2020 Author Report Share Posted January 24, 2020 This is very interesting. Thank you all for your replies, and please keep them coming. I’m (still) in the steep part of the learning curve and enjoying the climb. Quote Link to post Share on other sites
Wood Butcher Posted January 24, 2020 Report Share Posted January 24, 2020 2 hours ago, MANFIO said: I think that other Del Gesù violins that had their plates thinned had their ribs reduced in height at the same time to avoid wolves, hollow sonority and slow response, and that occurred to the majority of DG violins. Are you saying that if the ribs were not lowered, consequently the violins would be no good? Quote Link to post Share on other sites
Nick Allen Posted January 24, 2020 Report Share Posted January 24, 2020 16 hours ago, Greg Sigworth said: Those heights are not too great. Of more importance would be the thickness of the ribs. If the ribs height near the heal of the neck is great it might make playing more difficult. I never understood this. If the rib height were higher, as long as the overstand is the same, wouldn't everything work out either way? Quote Link to post Share on other sites
The Violin Beautiful Posted January 24, 2020 Report Share Posted January 24, 2020 4 minutes ago, Nick Allen said: I never understood this. If the rib height were higher, as long as the overstand is the same, wouldn't everything work out either way? I don’t think so. Any change to the structure of the instrument is going to have an impact. Perhaps some changes will not be noticeable to the majority of players, but I am always suspicious of claims that changes in structure will have no effect on tone. Quote Link to post Share on other sites
MANFIO Posted January 24, 2020 Report Share Posted January 24, 2020 8 minutes ago, Wood Butcher said: Are you saying that if the ribs were not lowered, consequently the violins would be no good? Yes, that's it, when they were regraduated the ribs were lowered to avoid wolf notes and hollow sound. Quote Link to post Share on other sites
jacobsaunders Posted January 24, 2020 Report Share Posted January 24, 2020 9 minutes ago, MANFIO said: Yes, that's it, when they were regraduated the ribs were lowered to avoid wolf notes and hollow sound. All these maniacs who know better than Del Gesu should have made their own new violins. They would have obviously sounded bloody marvelous Quote Link to post Share on other sites
MANFIO Posted January 24, 2020 Report Share Posted January 24, 2020 3 hours ago, jacobsaunders said: All these maniacs who know better than Del Gesu should have made their own new violins. They would have obviously sounded bloody marvelous port post I think that, in the case of the Cannone, the thick graduations are counterbalanced by the high ribs. Thinner plates with such high ribs would render the sound hollow and unfocused. That`s why I think that when DG violins were regraduated they had their ribs lowered. There are many references by old authors (Cozio di Salabue, Marquis de Picolellis, Abè Sibire, etc) about the use of thick plates by Del Gesu, as well as the use of high ribs. Paganini was allways looking for a del Gesù with thick plates as his Cannon, but it was too late, the regraduation machine was already working a long time ago. Biddulph's book portrays 25 violins, just the CANNON and his twin brother, the CARRODUS, are that thick and, coincidentally, they retain their high ribs. Giovanni Marchi, an old author ("Il Manoscrito Liutario di Giovanni Marchi") states that he himself had regraduated many instruments. Del Gesù inside work is rather crude in non regraduated instruments. When a Del Gesù has a fine inside finishing, it points out in general to regraduation. I remember reading an article about the "Alard" del Gesù mentioned that it was probably regraduated by Vuillaume, who was Alard's father in law. Some say that the Mantegazzas were the guys who have initiated the regraduation of Guarneri`s instruments. Since Stradivari was the standard for a lot of time, most of Del Gesù violins were regraduated to conform to that standard, making them easier to sell. Not all violinists will be able to master a thick del Gesù. All Del Gesù violins had a conical hole on the inside back, that corresponds to it`s thickest part. When this conical hole is missing, or was partially removed, it means that the back was regraduated, and that occurs with the majority of Guarneri violins (Roger Hargrave mentions that in his article on Del Gesù on Biddulph's book). Del Gesu knew what he was doing. His family was a musical one. His uncle was employed as a musician in Mantua and he had many relatives that were musicians (the Orcelli, for instance). The Hills, in their book about the Guarneris, say that perhaps Del Gesù was a player, perhaps even an outstanding player. Quote Link to post Share on other sites
Melvin Goldsmith Posted January 24, 2020 Report Share Posted January 24, 2020 DG original grads work best Quote Link to post Share on other sites
MANFIO Posted January 24, 2020 Report Share Posted January 24, 2020 9 minutes ago, Melvin Goldsmith said: DG original grads work best Yep! Quote Link to post Share on other sites
Nick Allen Posted January 25, 2020 Report Share Posted January 25, 2020 6 hours ago, The Violin Beautiful said: I don’t think so. Any change to the structure of the instrument is going to have an impact. Perhaps some changes will not be noticeable to the majority of players, but I am always suspicious of claims that changes in structure will have no effect on tone. I wasn't speaking about acoustics necessarily. But more ergonomics. Quote Link to post Share on other sites
ScotPiper Posted January 25, 2020 Author Report Share Posted January 25, 2020 Thanks again for all your ideas. The history on the Del Gesu instruments is especially fascinating. I have C# wolfs on a couple instruments, and I wonder if the rib height might be part of the reason. Rib thickness is 1mm, plate thicknesses are pretty normal, and possibly even a wee thick. The ribs are 31.0mm (neck) to 31.5mm (bottom); perhaps they’re borderline too-tall. I always cut the blocks too tall initially because I’m afraid something will “go wrong” later and I’ll need that extra height to flatten the garland. But nothing has ever “gone wrong” and so I never need that extra height. Time to change that habit. Quote Link to post Share on other sites
Greg Sigworth Posted January 25, 2020 Report Share Posted January 25, 2020 Just an idea. When the left hand comes up to the violin body in higher positions the added thickness caused by the higher ribs may make it more difficult for the player to have freedom to move the hand. This may be the reason the ribs sometimes are reduced in height in this region of the violin.A good violinist would be one to respond to this idea. Quote Link to post Share on other sites
Urban Luthier Posted January 25, 2020 Report Share Posted January 25, 2020 Some times we get so hung up on the weirdest stuff. I have a hell of a time telling the difference between violins (most sound similar to me with the biggest difference being the person playing the instrument). Violas and cellos are a different story. I've made a few violas after the Strad Archinto (which had its ribs lowered unfortunately). in all cases I used normal or higher than normal rib heights - no loss of focus or dynamics - if anything they sound better. Quote Link to post Share on other sites
David Burgess Posted January 25, 2020 Report Share Posted January 25, 2020 5 hours ago, Greg Sigworth said: Just an idea. When the left hand comes up to the violin body in higher positions the added thickness caused by the higher ribs may make it more difficult for the player to have freedom to move the hand. This may be the reason the ribs sometimes are reduced in height in this region of the violin.A good violinist would be one to respond to this idea. In the higher positions, the hand will only be touching the top, with the thumb usually still indexed to the crook of the heel. So the height of the ribs wouldn't matter in this scenario. Quote Link to post Share on other sites
MANFIO Posted January 25, 2020 Report Share Posted January 25, 2020 46 minutes ago, David Burgess said: In the higher positions, the hand will only be touching to top, with the thumb usually still indexed to the crook of the heel. So the height of the ribs wouldn't matter in this scenario. Yes, it is an issue only with violas. Quote Link to post Share on other sites
nathan slobodkin Posted January 26, 2020 Report Share Posted January 26, 2020 8 hours ago, MANFIO said: Yes, it is an issue only with violas. The shape of the bout is certainly an issue for violists but why would the rib height get in the way more than on a violin? Quote Link to post Share on other sites
Joel Pautz Posted August 3, 2020 Report Share Posted August 3, 2020 On 1/24/2020 at 2:29 PM, MANFIO said: port post I think that, in the case of the Cannone, the thick graduations are counterbalanced by the high ribs. Thinner plates with such high ribs would render the sound hollow and unfocused. That`s why I think that when DG violins were regraduated they had their ribs lowered. There are many references by old authors (Cozio di Salabue, Marquis de Picolellis, Abè Sibire, etc) about the use of thick plates by Del Gesu, as well as the use of high ribs. Paganini was allways looking for a del Gesù with thick plates as his Cannon, but it was too late, the regraduation machine was already working a long time ago. Biddulph's book portrays 25 violins, just the CANNON and his twin brother, the CARRODUS, are that thick and, coincidentally, they retain their high ribs. Giovanni Marchi, an old author ("Il Manoscrito Liutario di Giovanni Marchi") states that he himself had regraduated many instruments. Del Gesù inside work is rather crude in non regraduated instruments. When a Del Gesù has a fine inside finishing, it points out in general to regraduation. I remember reading an article about the "Alard" del Gesù mentioned that it was probably regraduated by Vuillaume, who was Alard's father in law. Some say that the Mantegazzas were the guys who have initiated the regraduation of Guarneri`s instruments. Since Stradivari was the standard for a lot of time, most of Del Gesù violins were regraduated to conform to that standard, making them easier to sell. Not all violinists will be able to master a thick del Gesù. All Del Gesù violins had a conical hole on the inside back, that corresponds to it`s thickest part. When this conical hole is missing, or was partially removed, it means that the back was regraduated, and that occurs with the majority of Guarneri violins (Roger Hargrave mentions that in his article on Del Gesù on Biddulph's book). Del Gesu knew what he was doing. His family was a musical one. His uncle was employed as a musician in Mantua and he had many relatives that were musicians (the Orcelli, for instance). The Hills, in their book about the Guarneris, say that perhaps Del Gesù was a player, perhaps even an outstanding player. On page 119 of Stradivari, Stewart Pollens writes: We tend to think of the work of Stradivari as the pinnacle of violin making, yet Count Cozio di Salabue sent new instruments that he had bought from Paolo, the merchant son of Antonio Stradivari, directly to the Mantegazza brothers in Milan to have them "thinned to perfection" and re-necked to suit the prevailing tonal aesthetic. His source is listed as Cozio di Salabue's Carteggio, pg. 420. So I guess it might be asked if it was really Stradivari's graduations which were imposed upon Del Gesu's work, or was it rather Count Cozio's? Quote Link to post Share on other sites
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