Poor placement of nut or bridge, or badly seated, uneven frets will also cause buzzes and other playing problems. The number and spacing of strings on the mountain dulcimer has never been regularized. Double strings are always pressed down together, but of course there will be one tuner per string. A four course of four equidistant single strings, with this configuration, it is possible to play four-note chords. String length Dulcimers are available in a variety of string lengths.
String length refers to the distance from nut to bridge.
String length affects what you hear in several ways. Increase in string length means an increase in string tension. Longer string lengths tend to sound twangy and nasal, and are especially appropriate for the traditional dronal style of playing. However, reaching chords along the fingerboard is easier. If your hands are small, and you plan on playing chords on the dulcimer, consider one with a shorter string length.