Boosey & Hawkes 5G (Bach/Conn Reference)

Archive Notes

Reviewable reference entry for players who own or search for a Boosey & Hawkes-stamped 5G. Current research does not confirm an official B&H catalogue model named 5G; 5G is best treated as a Bach/Conn-style large-bore tenor trombone size. Reference specs: 25.50 mm rim, deep cup, medium-wide semi-flat rim concept, 0.276 inch / 7.01 mm throat, #429 backbore, and large shank. A modern Conn 88H normally accepts a standard large shank 5G-style mouthpiece. Older Conn 88H instruments may use the Remington/Conn taper, so a Conn/Remington shank may seat better than a standard large shank. Use these measurements as a comparison starting point: fit and response still depend on the player, dental structure, instrument receiver, and each manufacturer's measuring method.

Known Variants

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