David Hornett Posted January 13 Share Posted January 13 A line concertina, been wanting to do this for years. BUT: Not as easy to make as I thought. Some of the Bass reeds had to be tuned 75 cents sharp of A 440 to be A 440 when assembled in the cover, (they were spot on when the comb with reeds inserted was out of the instrument's cover.) All I can put it down to is a tunnelling effect when blowing the instrument. I checked this theory out by reducing the mouth piece height, and thereby the venting holes' length, by 5 mm, this had the effect of reducing the bass reeds required sharpening about 25 - 30 cents depending on the reed (for instance, sharpening fell from 105 cents to 75 in some cases.) The middle reeds were effected by between 20 -30 cents, and the top reeds by about 15 - 30 cents. And talking about blowing, a very good set of lungs is required to supply the air through the reeds compared to a normal Hohner chromatic with their much smaller reeds. Reeds are stainless steel: my files will never be the same again! It sounds much more like a saxophone than a harmonica. 6 Quote Link to comment Share on other sites More sharing options...
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