I’m new to the flute, although I’ve played classical music as a semi-professional trombonist for almost 30 years. (Believe it or not, the embouchures are very similar!)
I purchased a good, used, simple (no keys, tenon w/o tuning slide) wooden flute and have been surprised and dismayed by the intonation tendencies of the instrument. Using the RTTA and playing simple D and G scales, I found that when the tenon was all the way in, the flute was very sharp overall, but the scale was inconsistent. With the tenon out about 1/4" it was closer to pitch (trying for A=440, but managed to center in on A=435, slightly flat), but again it was inconsistent. More importantly, the octaves were not in tune–they were very wide, about 1/4-step for some octaves, almost a minor 9th!
By chance, the head cap (no screw; just a simple plug with waxed thread) popped out when I was mopping out after a practice session. I put it back in carefully (gentle taps with a rawhide mallet and dowel), measuring the distance with a flute cleaning rod and lining up the mark with the middle of the embouchure hole. I then played D and G scales with the RTTA. Same result. I then played D and G scales with the cap further from the embouchure hole–similar results. And again with the cap closer to the embouchure hole–similar results.
Are most beginner’s grade flutes this wild with intonation?
I know it’s hard to diagnose without pics or a video, but does anyone have suggestions? Embouchure? Posture? Rolling in or out more?