Brassy, powerful, overpowering, solid, tense, penetrating, dramatic, hard, full, sinister, soft, round.
In general the slightly wider bore of the bass trombone lends it a somewhat darker timbre and fuller sound.
Bb0 – Bb1
Easy attack thanks to the slightly wider bore.
B1 – F2
Upper portion similar to the tenor trombone’s low register. Typical bass region, true trombone bass range, powerful metallic sounds, sforzando tones easily executable.
F#2 – F4
Slightly darker than the tenor trombone.
F#4 – F5
The highest notes are somewhat harder to play than on the tenor trombone.