{"product_id":"cg-123bo-4-4-d45","title":"BOHEMIA Violin #123 BO Unique Piece D45, CG-123BO-4_4-D45","description":"\u003cdiv style=\"border:1px solid #b8860b;padding:10px;margin-bottom:14px\"\u003e\u003cp\u003e\u003cstrong\u003eGötz Violin Gallery \/\/ Unique piece D45\u003c\/strong\u003e\u003cbr\u003eYou are buying exactly the violin shown. All photos show this instrument with serial number D45, built in the HERITAGE build variant. Only this one instrument is available. Once it is sold, it is gone.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"\/en\/products\/cg-123bo-4-4\"\u003eGo to the main listing of this model\u003c\/a\u003e\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eViolin from the BOHEMIA line by Conrad Götz, quality grade 123 BO, in the HERITAGE build variant, size 4\/4. BOHEMIA is the house line with a French tailpiece and bean-shaped pegs.\u003c\/p\u003e\u003cul\u003e\u003cli\u003e15 hand-applied coats, dark brown antique ground with dark red shading\u003c\/li\u003e\u003cli\u003eBack and neck of maple of Bosnian origin, top of spruce from the European highlands, with certified timber origin.\u003c\/li\u003e\u003cli\u003eIncluded: strings, bridge, tailpiece, pegs, fine tuner, Götz chin rest, hang tag, certificate of origin and a microfibre bag.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2\u003eTechnical data\u003c\/h2\u003e\u003ctable\u003e\u003ctr\u003e\u003ctd\u003eInstrument\u003c\/td\u003e\u003ctd\u003eviolin\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eLine\u003c\/td\u003e\u003ctd\u003eBOHEMIA\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eQuality grade\u003c\/td\u003e\u003ctd\u003e123 BO\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eBuild variant\u003c\/td\u003e\u003ctd\u003eHERITAGE\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eSize\u003c\/td\u003e\u003ctd\u003e4\/4\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eSerial number\u003c\/td\u003e\u003ctd\u003eD45\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eTop\u003c\/td\u003e\u003ctd\u003eSpruce\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eBack and neck\u003c\/td\u003e\u003ctd\u003eMaple\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eWarranty\u003c\/td\u003e\u003ctd\u003e6 months\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eCompany seat\u003c\/td\u003e\u003ctd\u003eWernitzgrün near Markneukirchen\u003c\/td\u003e\u003c\/tr\u003e\u003ctr\u003e\u003ctd\u003eItem number\u003c\/td\u003e\u003ctd\u003eCG-123BO-4_4\u003c\/td\u003e\u003c\/tr\u003e\u003c\/table\u003e\n\u003ch2\u003eWood of this instrument\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUnder the dark Bohemia varnish the maple back shows a strong, wide flame with high contrast.\u003c\/li\u003e\n\u003cli\u003eThe neck is clearly flamed.\u003c\/li\u003e\n\u003cli\u003eThe spruce top has even, medium-width growth rings.\u003c\/li\u003e\n\u003cli\u003eThe photos show exactly this instrument.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\u003cli\u003eBOHEMIA line, quality grade 123 BO\u003c\/li\u003e\u003cli\u003eHERITAGE build variant\u003c\/li\u003e\u003cli\u003eSize 4\/4\u003c\/li\u003e\u003cli\u003eEbony, tailpiece in the French shape\u003c\/li\u003e\u003cli\u003eBean-shaped pegs\u003c\/li\u003e\u003cli\u003eGötz Guarneri chin rest\u003c\/li\u003e\u003cli\u003eGötz bridge, German shape, with ebony insert at the E string\u003c\/li\u003e\u003cli\u003eStrung with Thomastik Dominant\u003c\/li\u003e\u003cli\u003eTraditional design\u003c\/li\u003e\u003cli\u003eSturdy construction\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2\u003eIn practice\u003c\/h2\u003e\u003cul\u003e\u003cli\u003eThe model number stands for wood selection and the amount of work put into the white, still unvarnished instrument: graduation of the top, finishing inside and out, choice of tonewood. The higher the number, the more time has gone into the wood and the rounder and more differentiated the sound. 93 and 98 are student instruments, 108 and 110 are for advanced students and committed amateurs, from 120 upwards they are instruments for professionals, and 136 and 140 head towards orchestral instruments.\u003c\/li\u003e\u003cli\u003eThe letters denote the series: varnish and set-up, that is pegs, end button, sound post, strings, chin rest and adjustment. In a photo you cannot see the difference between a 110 and a 115, but you can see whether it is a Metropol or a Cantonate.\u003c\/li\u003e\u003cli\u003eWe varnish exclusively with spirit varnish. The spirit evaporates, resins and pigments remain. Priming, staining, colour coats, intermediate sanding and sealing add up to around fifteen steps; because these are natural varnishes, one coat more or less may be needed until the colour is right.\u003c\/li\u003e\u003cli\u003eFifteen hand-applied coats of varnish are what sets this line apart from the entry lines.\u003c\/li\u003e\u003cli\u003eSIGNATURE and HERITAGE are two build variants of the same line. HERITAGE is the traditional and sturdier version, SIGNATURE the lighter, modernised one.\u003c\/li\u003e\u003cli\u003eGuide values for string height at the end of the fingerboard: violin around 3.5 mm under the E and 5.0 mm under the G, viola 4.5 to 5.5 and 5.0 to 6.0 mm, cello 5.0 to 6.5 and 5.5 to 7.5 mm.\u003c\/li\u003e\u003cli\u003eIn the first weeks the strings stretch and the bridge creeps towards the fingerboard as you tune. Both need checking; a readjustment after a few weeks is normal.\u003c\/li\u003e\u003cli\u003eHumidity 40 to 50 per cent at around 20 °C, up to 60 per cent unproblematic. Below 40 percent you risk slipping pegs, opening glue joints and cracks.\u003c\/li\u003e\u003cli\u003eAfter playing, take off rosin dust with a microfibre cloth and no pressure. No polish, no tincture, no alcohol on the varnish.\u003c\/li\u003e\u003cli\u003eAfter cold or heat, open the case only after fifteen to thirty minutes. Never leave it in a car, never check it as baggage.\u003c\/li\u003e\u003cli\u003eThe company is based in Wernitzgrün near Markneukirchen. It has existed since 1884 and is run as a family business in the fourth generation.\u003c\/li\u003e\u003cli\u003eSix months warranty on defective components and workmanship.\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2\u003eSound and physics\u003c\/h2\u003e\u003cp\u003eThe air in the body vibrates through the f-holes as a Helmholtz resonator (A0), on the 4\/4 violin at around 270 Hz, above the open G string at 196 Hz; it supports above all the notes of the D string. In modal analysis (the measurement of natural vibrations) the principal body resonances of a 4\/4 violin typically lie at:\u003c\/p\u003e\u003cul\u003e\u003cli\u003eA0, Helmholtz air resonance: around 270 Hz\u003c\/li\u003e\u003cli\u003eCBR, bending mode of the whole body: around 400 Hz\u003c\/li\u003e\u003cli\u003eB1−, first antisymmetric plate mode: around 450 Hz\u003c\/li\u003e\u003cli\u003eA1, first higher cavity mode: around 470 Hz\u003c\/li\u003e\u003cli\u003eB1+, first symmetric plate mode: around 540 Hz\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003eThe sound post under the right foot of the bridge practically doubles the number of modes that contribute to the radiated sound. The bass bar, around 25 cm long on the 4\/4 violin, stiffens the bass side of the top and, together with the arching, carries the string tension. With the Thomastik synthetic sets we stock, the bridge presses on the top with around 8.5 to 9.5 kg.\u003c\/p\u003e\u003cp\u003eOn the 4\/4 violin a spruce top is typically 3.2 to 3.3 mm thick in the centre, 2.5 to 2.7 mm across the bouts and 3.0 mm at the edge; the maple back reaches 4.2 to 4.3 mm in the centre. This distribution of thicknesses (the graduation) sets, together with the arching, the natural frequencies of top and back.\u003c\/p\u003e\u003cp\u003eAt 12 % moisture content the spruce top has a density of 380 to 470 kg\/m³ and a modulus of elasticity along the grain of around 10,000 MPa; sound travels along its grain at around 4,800 m\/s. For the top, 8 to 15 growth rings per centimetre is the recommended range.\u003c\/p\u003e\u003cp\u003eThe F in a grade such as 125F stands for the one-piece back.\u003c\/p\u003e\u003cp\u003eThe Bohemia has ebony fittings with a tailpiece in the French style, bean-shaped pegs and a Götz bridge in the German style with an ebony string seat. It takes up elements of 18th-century central European violin making from the Leipzig, Prague and Vienna region.\u003c\/p\u003e\u003cp\u003eIts varnish is applied by hand in 15 layers, with a dark brown antique ground and dark red shading; it is the darkest varnish in our range and lets the grain show clearly. On the 108 BO more wood is taken away on the lower bout side than on the 107 BO, and at 24 mm its neck is narrower than the usual 26 mm or so.\u003c\/p\u003e\u003cp\u003eHeritage and Signature are two ways of working the same model; from five metres away they are barely distinguishable. The Signature is around 10 to 15 % lighter, above all at the scroll and neck, the inner neck block and the back joint, and so takes weight off the left arm. Its fingerboard is thinner and more gently rounded, while the string spacing stays the same; it has been in steady production since 2019.\u003c\/p\u003e\n\u003ch2\u003eOur experience\u003c\/h2\u003e\u003cdiv class=\"cagjr-erfahrung\"\u003e\u003cp\u003eWe deliver every violin set up and tuned, because only then can we play and check it before it leaves us. We deliberately set the string height slightly high, because a bridge is easier to lower than to replace.\u003c\/p\u003e\u003cp\u003eWhat lies between two grades is above all time spent on graduation: the higher grade differs from the next one down through longer work thinning the inner surfaces of top and back and through more carefully selected wood.\u003c\/p\u003e\u003cp\u003eIn our experience the Bohemia sounds darker and warmer than the Metropol, shaped by its own construction and a slightly thicker varnish. Experienced players choose the 110 BO for its full sound.\u003c\/p\u003e\u003cp\u003eIn our experience the Signature responds a little more quickly and sounds a little brighter and lighter than the Heritage, while the Heritage sounds broader and fuller than the Signature. We often recommend the Heritage to players with large hands and a strong build, and the Signature to smaller hands.\u003c\/p\u003e\u003c\/div\u003e\n\u003ch2\u003eWhen another model suits you better\u003c\/h2\u003e\u003cp\u003ePlayers who want the classically balanced middle ground rather than the dark warmth of the Bohemia will find it in the Metropol, our best-selling series.\u003c\/p\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eWhich strings is the violin supplied with?\u003c\/h3\u003e\u003cp\u003eWith Thomastik Dominant, set 135: G 133, D 132, A 131 and E 129SN.\u003c\/p\u003e\u003ch3\u003eWhat string tension does the violin carry with Dominant?\u003c\/h3\u003e\u003cp\u003eThe factory set Dominant 135 in medium puts 21.2 kg on the violin in total; through the bridge it presses on the top with around 8.5 kg.\u003c\/p\u003e\u003ch3\u003eHow dry is the wood when the violin is varnished?\u003c\/h3\u003e\u003cp\u003eBelow 9 % moisture content; that is how dry the wood of our violins is before varnishing.\u003c\/p\u003e\u003ch3\u003eHow many layers of varnish does the Bohemia have?\u003c\/h3\u003e\u003cp\u003e15 hand-applied layers.\u003c\/p\u003e\u003ch3\u003eHow wide is the neck of the 108 BO?\u003c\/h3\u003e\u003cp\u003e24 mm, compared with around 26 mm on most of our violins.\u003c\/p\u003e\u003cp class=\"cagjr-copyright\"\u003e\u003cem\u003eThese texts hold decades of experience and a great deal of heart. They are protected by copyright, C.A. Götz jr. GmbH. Please ask us before any use. Thank you for your appreciation.\u003c\/em\u003e\u003c\/p\u003e","brand":"Conrad Götz","offers":[{"title":"Default Title","offer_id":59762875171161,"sku":"CG-123BO-4_4-D45","price":2025.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0928\/9695\/2665\/files\/CG-123BO-4_4-D45_01-Front_totale_e_e21b5c21-84a5-46f4-aed6-8c0569a39ac7.jpg?v=1791381083","url":"https:\/\/catalog.cagoetzjr.com\/en\/products\/cg-123bo-4-4-d45","provider":"Instruments \u0026 Accessories – The C.A. Goetz jr. Selection","version":"1.0","type":"link"}