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B French Horn Mouthpiece cup B18

Designer: Osmun


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Relatively shallow with a moderate cup shape that supports the upper register and produces a brilliant tone. Works well on 8D's in larger bore sizes. In smaller bore sizes, the B cup is popular with Geyer style horns.

The B line specifications:

  •  B18 has a #18 bore 4.305mm
  • .650" (16.5mm) diameter at the joint where the cup and rim meet
  • inch threads are .750-36 threads, compatible with almost all American-made screw rim mouthpieces
  • metric cups are 17.5mm at the joint where the cup and rim meet (special order 1-2 weeks)
  • metric threads are .800-36, designed specifically to be interchangeable with Osmun, Paxman and Halstead-Chidell mouthpiece rims and are offered in sizes larger than the inch models.
  • multiple shank choices to fit your horn perfectly. (European and Schmid special order 1-2 weeks)
  • bright silver plated cup (gold plated cups allow for 1-2 weeks delivery)

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