Patrick, being a Frenchman, has the text in French. Here's a working translation for us non-francophones:
The split (English word signifying division or sharing) is an action at the changer which allows (the player) to get a correct intermediate note when operating a pedal (which raises the pitch of the string) and a (knee) lever which lowers it, at the same time. The intermediate pitch alteration thus obtained is shared between the action of the pedal and the action of the lever.
Let's take the example of the 5th string which (open) gives a B.
When acted upon by the A pedal it raises this string to a C#.
The effect of the X lever lowers it to Bb. (The X lever is also known as the "J" lever and the "V" lever, the latter in memory of Jeff Newman, because it is usually a vertical lever operated by the left knee) (I use "LKV" for "left knee vertical)
If you operate the A pedal and the X lever you get an intermediate note between D# and Bb (*actually that's impossible, it would be between C# and Bb - this looks like a typo*). We will opt for a C using the A pedal and the X lever, which would allow us to get a minor chord by using e,g, A,B and X.
On a PSG fitted with an "all pull" changer there are two ways to tune a split.
1. The changer has an Allen screw (hex socket head) fixed to the cross-beam at the rear of the top of the changer (as seen on the Zumsteel, Emmons, Derby, and modern guitars like the Williams)
The rearward movement of the changer arm (which carries the string) is limited by the protrusion of this adjustable screw.
a. Tune the open string at the tuner.
b. Tune the raise (pedal depressed) using the nylon tuning nut behind the raise finger.
c. Tune the split lower (pedal and lever operated) using the nylon tuning nut behind the lower finger.
d. Tune the lower (release pedal, knee lever only) using the Allen screw at the back of the changer.
Last edited by
Will C on Sun Aug 07, 2016 10:07 pm, edited 1 time in total.