Joined
·
205 Posts
My understanding of intonation comes from my guitars where I play an open string, then at the 12th fret of the same string. If they don't match, my intonation is off. If the 12th fret is higher, I have to move the bridge further away from the head. So, with that understanding, I have the following dilemma that I hope someone can help with.
I play a G (or A, or whatever in the lower register) on my alto using a tuner to get me on the right frequency. When I open the octave key it plays sharp (not quite G# but close) until I release pressure on the reed. This is counter intuitive to me as I expect to have to apply more reed pressure in the high notes. After altering my pressure to get back in tune to the high G, I release the octave key and I have to increase pressure because the low G is flat.
Can someone shed some light on this? I've tried pulling out the mouthpiece to compensate but It just moves the problem a bit - i.e. fix the high G but the low G is off.
Besides me, could this be a problem with the horn ('64 HA Selmer Bundy) or is this fairly common with all horns?
Thanks for any insights. I would hate to learn to adjust to this only to learn something else is not right with the horn. Is this even a valid test?
Cheers and thanks.
I play a G (or A, or whatever in the lower register) on my alto using a tuner to get me on the right frequency. When I open the octave key it plays sharp (not quite G# but close) until I release pressure on the reed. This is counter intuitive to me as I expect to have to apply more reed pressure in the high notes. After altering my pressure to get back in tune to the high G, I release the octave key and I have to increase pressure because the low G is flat.
Can someone shed some light on this? I've tried pulling out the mouthpiece to compensate but It just moves the problem a bit - i.e. fix the high G but the low G is off.
Besides me, could this be a problem with the horn ('64 HA Selmer Bundy) or is this fairly common with all horns?
Thanks for any insights. I would hate to learn to adjust to this only to learn something else is not right with the horn. Is this even a valid test?
Cheers and thanks.