| General specifications |
| System |
Conservatoire (semi-automatic octave system) |
| Bore style |
American |
| Key systems |
Identical to models without the 'L' suffix |
| Mechanical features |
Left-hand F key, Fork F resonance key, Low Bb resonance (vent) |
| Trill keys |
Low B-C#, low C-Db, C#-D#, D#-E, F#-G#, G#-A, Ab-Bb, A#-B, B-C#, left C-D, right C-D |
| Pads |
9 cork, 14 felt pads |
| Body material |
Grenadilla Ebonite Inner-pipe (upper joint) |
| Key materials |
Silver-plated nickel silver keys |
| Toneholes |
POM resin (except metal octave vents) |
| Options |
With 3rd Octave Key (YOB-841LT) |
