Bach Stradivarius C190SL229X C TrumpetDescription The all new C190SL229X is inspired by early 1970s Elkhart designs. While the bore and body of this model are a standard . 462" large bore, it features the Bach X bore main tuning slide, which tapers from . 462" to . 459". This provides a brilliant yet broad sound with a lightning quick response. Features Drawing inspiration from early Elkhart model C trumpets (19651980), which set the standard for orchestral players, the C190SL229X offers