S?First, I hope this is in the right forum...
I have a new (three weeks old) SR505. I tune it every time I play and when it sits overnight it gets sharp by maybe 5 cents or less. Nothing crazy, but I am just wondering what's going on or what could be causing this. Is this normal? Could it be the new strings, setup, humidity, weather changes? Should I be concerned? My background is in wind instruments so I always assumed string instruments would go flat when sitting...
Yup, you're in the right place.
You are talking about it happening over night? Don't sweat that. Since it's such a small amount, I'd bet that it's nothing more than the instrument cooling off and settling. You probably have to re-tune after you've played a bit (10-15 min?) as well... sometime after it's warmed up from your body heat. It will probably be less after the strings are broken in too.
Yeah the instrument can go out of tune in either direction depending on temperature and humidity. Doesn't sound like you have anything to worry about.
You play the instrument.
The strings warm up from your touch.
You set it down and walk away.
The strings cool down.
Quiz questions 1 & 2: what happens when metal warms up? What happens when metal cools down?
Hint: the words "expansion" and "contraction" could be used in the answer.
Quiz question 3: What happens to the tuning of strings as they contract?
The alert student will conclude that the laws of physics still apply and are being evidenced in the phenomenon described.
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