ttm (left) ttl (right)
cup measurements in mm:
ttm: dia: 17.0mm - depth: 10.0 - outside dia: 24.1 - rim: 4.5
ttl: dia: 17.0mm - depth: 10.0 - outside dia: 26.0 - rim: 3.55
these mouthpieces are our "standard" trumpet types. Players coming to the cornetto
from modern trumpet often choose the ttl to start since it is likely to be closest to their modern mouthpiece.
On the other hand, the ttm gives a more focussed and brighter sound.