Also worth noting is the variance of measurements in the same bore sizes. There simply isn't enough (appropriate) numbers to accomodate all the possible bores in a logical sequence. I think this was probably the intended system when the 4 digit model numbers were developed, but it just seems to dissappear in any organised form as more models have been introduced into the range.

I think this seems to be fairly well established, although the listed items in italics are more theoretical.ġ - Bb Bass (eg: YTR-916) (as only one set of custom made Bass Trumpets exist it is hard to say whether this was the intent of the the series number but it seems to make sense although doesn't fit into the 3 digit model numbers.)Ģ - Eb Alto (no known Eb Alto trumpets exist but it would make sense that the number 2 was reserved for this pitch.) introduced 2005-)ĩxxx : Custom Artist (Allen Vizzutti, Bergeron, etc.)Īs you can see there is quite a lot of varience in the way models are described, breaking away from the Range/Key/Bore/Model number structure. Post-1982 with the change to the 4 digit model numbers, the marketing material suggests the following.ĥxxx : Allegro (introduced 2010 -, intermediate?)ĦxxxH : Professional Heavywieght (introduced 1987, replaced by Xeno Range)ĦxxxH : Maestro Range (UK Brass Band marketing, now marketed as NEO range except cornets)Ħxxx : Professional Signature Series (Bob Shew, etc.)Ĩxx : Custom (Unique Japan only medium bore range)ĨxxxH : Pre-Xeno (Custom?) (Japan only) 1986-1990ĩxxx : Xeno Artist Series (Chicago, New York etc. The pre-1982 range of Yamaha Trumpets with three digit model numbers appear to have been marketed as such:ĭoes anyone have any old brochures or marketing material from this time that they are willing to sent to me or share as a. This is an approximate guide to deciphering the meaning of the numbers and letters used to create the model numbers used on Yamaha Trumpets

Yamaha year codes