[pknight]

Here’s the deal. D1 on my TWO1 is about 25 cents flat on the tuner. The overtone (D2 played w/o the octave key) is in tune. D2 fingered with the octave is in tune. When I add the C# key to D1 the tone goes to crap, but it is in tune. I suspect that I need to open the C key to vent it better by adjusting the felt bumper. Any other opinions or advice for DIY on this? Thanks!

 

[1saxman]

I think you made a typo - you don't adjust the D key which is closed - you adjust the C key but be aware that this will also affect D1 and probably E.

 

[swperry1]

What if you loosen up your embouchure and play D1 in tune by pushing in your mouthpiece? The rest might just fall in line.

 

[leycroft]

Altos tend to be flat there compared to tenor and soprano's but 25 cents is more than i would have expected

 

[pknight]

I think you made a typo - you don't adjust the D key which is closed - you adjust the C key but be aware that this will also affect D1 and probably E.

Yes. Corrected.

Affecting D1 is what I’m going for.

 

[pknight]

What if you loosen up your embouchure and play D1 in tune by pushing in your mouthpiece? The rest might just fall in line.

There isn’t a lot left to push in. The rest of the range is in pretty good tune. Just this one note. E1, Eb1, etc are good.

 

[pknight]

Altos tend to be flat there compared to tenor and soprano's but 25 cents is more than i would have expected

It’s more than I expected as well.

 

[StrongD]

What if you loosen up your embouchure and play D1 in tune by pushing in your mouthpiece? The rest might just fall in line.

This is what I find. I push in pretty far (on alto, all the way in), and then relax into tune. It's at least worth a try.

 

[pknight]

This is what I find. I push in pretty far (on alto, all the way in), and then relax into tune. It's at least worth a try.

Sure, it’s worth a try, and thanks to you both for the suggestion.

 

[andre251]

It should have been setup properly to match the tuning when you received it. But if not, you can dial it in by adjusting the low C key height like people have mentioned. Doesn’t sound like there is a tuning issue, more of a minor setup issue.

 

[pknight]

It should have been setup properly to match the tuning when you received it. But if not, you can dial it in by adjusting the low C key height like people have mentioned. Doesn’t sound like there is a tuning issue, more of a minor setup issue.

Indeed. I adjusted the C key by backing out the felt bumper and it helped. I think I may need to adjust the size of the felt itself, as it is fairly large (long), which will allow adequate adjustment.

 

[andre251]

Usually you need to adjust the height so that low D is in tune (or flat if you like to use low C# to raise the pitch)
So you can decide how sharp middle D will get, like a balancing act.