Last evening I made my first attempt to retune a harmonica. I took a new chinese budget harp from the mall. It was in Richter C. (There are no others with this type.) I retuned it into C# / Db - just a semitone up on each reed, nothing extravagant. Just to get a feeling for this work. And I had no bluesharp in C# either.
I tuned it as close as possible to zero sharp or flat, by pinging the reeds on the naked reedplate into the tuner (a 5 cent tuner Korg CA). Then I mounted the harp again and played it by normal blow and draw. All the reeds were about 20 cent flatter than before when dismounted and pinged, some even a little bit more than 20 cent.
Question 1: Is this Mr. Helmholtz that tricked me?
Or what else is the issue?
Question 2: Are these 20 - 25 cents more flat a constant, or can this also be different when tuning any other instrument?
Question 3: Is it to recommend to add these 20 or 25 cent in advance (in the case of a constant)? Or is it necessary to test this on one reed before continuing the work to avoid to do all the work twice?
Question 4: When I want to tune a reed lower, is it necessary to leave it 20 or 25 cents above the intented pitch?
And additional question 5:
What is the recommended maximum for the change of pitch before the risk of damaging the reed? Is the maximum the same for tuning higher or lower? Is there a difference between brass or phosphor-bronze or steel reeds?
dear greetings
triona
question about retuning harmonicas
question about retuning harmonicas
Aw, Thou beloved, do hearken to the Banshee's lonely croon!
sinn féin - ça ira !
Cad é sin do'n té sin nach mbaineann sin dó
https://www.youtube.com/@triona1367
https://soundcloud.com/triona-966519605
sinn féin - ça ira !
Cad é sin do'n té sin nach mbaineann sin dó
https://www.youtube.com/@triona1367
https://soundcloud.com/triona-966519605