This is an old revision of the document!
Table of Contents
CLASSIFYING BRASS INSTRUMENTS
By Length of Tubing
2.25 feet of tubing (Bb4)
Piccolo Trumpet, Piccolo Trombone
3.25 feet of tubing (Eb3)
Sopranino Trombone, Soprano Trumpet, Soprano Cornet, Soprano Helicon
4 Feet of tubing (C4)
Trumpet, Cornet
4.5 feet of tubing (Bb3)
Soprano Trombone, Trumpet, Cornet, Flugal Horn, Alto Helicon
6.5 feet of tubing (Eb3)
Alto Trumpet, Alto Trombone, Mellophone, Alto Horn, Tenor Horn, Tenor Helicon
8 feet of tubing (C3)
Tenor Trombone, Euphonium
9 feet of tubing (Bb2)
Tenor Trombone, Bass Trumpet, Baritone, Euphonium, Baritone Helicon
12 feet of tuning (F2)
Cimbasso, Bass Trombone, French Horn, Sousaphone, Tube, Bass Helicon
13 feet of tubing (Eb2)
Cimbasso, Bass Trombone, Sousaphone, Tuba, Bass Helicon
16 feet of tubing (C2)
Cimbasso, Contrabass Trombone, Sousaphone, Contrabass Tuba, Contrabass Helicon
18 feet of tubing (Bb1)
Cimbasso, Contrabass Trombone, Sousaphone, Contrabass Tuba, Contrabass Helicon
26 feet of tubing (Eb1)
Subcontrabass Tuba
By Taper of the Cone
| Pitch Range | Cylindrical | Slide | Slight Cone | Medium Cone | Steep Cone |
| Bb4/C5 | Piccolo Trumpet | ||||
| Eb4/F4 | Soprano Trumpet | Soprano Cornet | Soprano Helicon | ||
| Bb3/C4 | Trumpet | Soprano Trombone | Cornet | Flugel Horn | |
| Eb3/F3 | Alto Trumpet | Alto Trombone | Mellophone | Alto Horn | |
| Bb2/C3 | Bass Trumpet | Tenor Trombone | Baritone | Euphonium | |
| Eb2/F2 | Eb/F Cimbasso | Bass Trombone | French Horn | Eb Tuba | |
| Bb1/C2 | Bb/C Cimbasso | Contrabass Trombone | Bb Contrabass Tuba |
By Bore Diameter
| Instrument | Small | Medium | Large |
| Trumpet | .450“ | .472” | |
| Tenor Trombone | .480“-.508” | .525″ | .547″ |
Instrument Proportions
| Trumpet | Trombone | Horn | |
| Mouthpiece taper | 21% | 9% | 11% |
| Cylindrical part | 29% | 52% | 61% |
| Bell | 50% | 39% | 28% |
NOTES
A chart of Conn Bore sizes based off markings on the instruments 2)
Bore chart based off mouthpiece number size 3)
4)
5)
Tube lengths 6)
1)
https://en.wikipedia.org/wiki/Bore_(wind_instruments)#Brasses
