Manual

When tuning pianos and grand pianos, the stretching of tune has to be considered for various

reasons, i.e. that in deviation from the standard tune, high tones have to be tuned higher, and bass

tones lower. We will discuss this further in Part 3 of the Operating Instructions. The Tuning Set

CTS-5 may be adjusted so that, based on stretching diagrams, which are incorporated in the CTS-

5 program, these deviations or stretchings are automatically considered.

Several stretchings are available in the Tuning Set. Five are permanently programmed. The

remainder you may choose and enter yourself, using Program Number 7 (MEMORY) (Only for

CTS-5-P and PE). You may find the diagrams of the five permanently programmed stretchings in

Part 3 of the Operating Instructions.

The choice of the optimal stretching depends on various parameters of the instrument to be tuned.

Another important consideration is the preference of the musician.

The five built-in stretchings are the result of trials, during which various pianos were tuned by ear,

and subsequently measured. The stretching most suitable for your requirement must be tried by

you first, considering that the weak and middle stretching is more suitable for pianos with large

measure (concert grand piano). We recommend that in your first attempts you try the Stretching

Number 3 (strong). For this, the Tuning Set is used as follows:

Switch on the Tuning Set. >1< TUNING ->

Tap key ">" 4 times. >5< STRETCHING->

Tap key "E". NO STRETCHING

NUMBER 00

Using keys "<" or ">" you may select one of the following stretchings.

Number 1 (SLIGHT) Bass and Descant stretched slightly.

Number 2 (MODERATE) Bass and Descant stetched.

Number 3 (STRONG 1) Bass and Descant stretched heavily.

Number 4 (STRONG 2) Bass weak, center portion stretched heavily.

Number 5 (STRONG 3) Center portion stretched heavily.

Three Self-Programmable Stretchings (CTS-5-P and PE only):

Number 6 (Memory S01)

Number 7 (Memory S02)

Number 8 (Memory S03)

12 Further Self-Programmable Stretchings in the exchangeable memory module (CTS-5-PE only):

Number 9 (Memory SE04)

....

Number 20 (Memory SE15)