You can adjust the height of the strings here.
Before the adjustment, we should make a preliminary examination of the neck:
Method 1: Look at the bridge horizontally and sideways from the head of the piano, see which direction the neck bends, and see if there is anything abnormal. After preliminary judgment, adjust the neck.
Method 2: Press and hold the 6-string 1 pin and the pin at the joint between the neck and the body, and look at the gap between the strings and the fingerboard, and you can roughly judge the condition of the neck at that time.
The appearance of more than ten frets, that is, the chord spacing is too low, which leads to the gap between the strings and frets being too small to allow the strings to have enough space for normal vibration. At this time, the neck of the piano is generally bent backwards. Then at this time we need to "restore" the neck to the correct state. The correct statement should be to "relax" the neck by turning the wrench in the direction of 6 strings.
In fact, the phenomenon that the distance between two chords is too high is just the opposite of the principle of beat. The neck of a piano is generally bent forward. Similarly, at this time, we need to "tighten" the neck by turning the wrench in the direction of 1 chord.
Standard chord distance:
6 chords 1 0.8mm,
1 chord 1 sound file 0.55 mm (2-5 chords accumulated, measured with a thickness gauge).
6 strings 12 product 2.6mm,
1 string 12 product 2.2mm (standard single-board guitar, properly heightened plywood)
The correct measurement method is measurement? The bottom of the string? Arrive? Copper roof? The chord height ruler is 90 degrees perpendicular to the copper, and the eyes are straight. )
The radian of the neck: 0.2-0.3mm (the median value can be 0.25mm, which is best adjusted according to the flatness of the fingerboard).