|Pic 1. Standard Cello Pegs|
D String Peg – will always be in the top holes in the peg box going from right to left
G String Peg – goes into the second set of holes from left to right
A String Peg – goes into the third set of holes from right to left
C String Peg – goes into the bottom set of holes from left to right
In order to raise or lower the pitch of a string, it’s corresponding peg is either turned forwards to loosen the string or backwards to tighten the string. When one of the standard pegs is turned within its holes, the friction of the peg moving against the peg box disturbs the other pegs and can affect the pitches of the other strings. The perfection peg helps to eliminate this problem. The image below shows the difference in how perfection pegs work in comparison to standard pegs.
|Pic 2. Standard Peg & Perfection Peg Comparison|
When a standard peg is turned, the entire shaft turns. When perfection pegs (also called planetary pegs) are turned, only the head and the section where the strings are wound turns. The two sections of the shaft secured in the peg box holes never move, and therefore don’t disturb the entire peg box during tuning. The head of a perfection peg is much easier to turn than that of the standard peg since there is no friction or resistance to overcome from the peg shaft to peg box interaction.
You may also find the following links helpful:
5th Position Cello Fingering Chart
Music Terms & Symbols For Cellists
4th Position Cello Fingering Chart
Teaching Vibrato To Beginning Cellists
3rd Position Cello Fingering Chart