Tuning across octaves

T
tailgate
Posts: 20
Joined: Mar 23, 2018

by tailgate »

Bass trombone - Tips to improving tuning over octaves? B flat in the stave is much flatter than Bflat above!

I guess the problem is mostly the user although I have heard that deeper mouthpieces also have an impact.

Which Bflat should I use to tune with!!
B
Burgerbob
Posts: 6327
Joined: Apr 23, 2018

by Burgerbob »

the 2nd partial (low Bb in the staff) has a huge, huge slot. There's a lot of space where that note can sound "acceptable" but not necessarily be in the center of the note. Experiment with where you play it.
F
FullPedalTrombonist
Posts: 152
Joined: Mar 23, 2018

by FullPedalTrombonist »

I always tune to the 3rd partial with the ensemble or when I tune while practicing. And also 2nd just so I know where it is also. Tune all your notes, pretty much, as you play your scales make all the effort you can to hit the center of each pitch right away. Whichever octave you tune to make sure you’re moving your slide to play the next octave in tune.

I like a bass to have some tighter slotting so I don’t have to work too hard to center my notes, but not toooooo slotted so I have wiggle room for other reasons.
H
harrisonreed
Posts: 6479
Joined: Aug 17, 2018

by harrisonreed »

If octaves don't line up it COULD be the mouthpiece backbore being wrong for the horn, or the valves slightly out of alignment. It could definitely be just you though, too.
W
WilliamLang
Posts: 636
Joined: Nov 22, 2019

by WilliamLang »

use the one that's furthest "in" to tune, then keep working on developing your embouchure (making sure to buzz in the middle of the pitch at maximum resonance) and sense of pitch in the long term
L
LeTromboniste
Posts: 1634
Joined: Apr 11, 2018

by LeTromboniste »

Is the top Bb even sharper and the pedal Bb even flatter? If yes, it's very possible it's the mouthpiece having too large a throat/backbore for the horn (if the cup was too deep the problem would be reversed, higher octaves would be flat).

If not, if only that partial is out of line, then it's likely you, or a quirk of the horn.