TLA CTS-5-CA, Manual

8

The four 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 (MODERATE). For this, the Tuning Set is used as follows: 
Turn on the device 
 
Tap ">"  4 times 

Tap "E"  

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

Number  1 (VERY SLIGHT) 

Bass and Descant stretched slightly. 

Number  2 (SLIGHT) 

Bass and Descant stetched. 

Number  3 (STR.MODERATE) 

Bass and Descant stretched heavily. 

Number  4 (STR.PRONOUNCED) 

Bass weak, center portion stretched heavily. 

Number  5 (MEMORY) 

Self stored stretching 

 
In this example we will obtain Stretching Number 3

(STR.MODERATE):   Press ">"  3 times 
Press "E" 
 
Press "<" 4 times 
 
Press "E"  
 
Now you may start tuning. Start with tone a' and tune all three 
strings. Continue with b', h', c'', etc.  At one of the higher tones 
you may see the following display (for example): 
The Tuning Set is now considering preselected stretching. Any deviation from standard tune is 
indicated in CENTS on the lower display line. 
After you have finished tuning the descant, start tuning downward beginning with g#'. The 
deeper tones will automatically be tuned lower according to the preselected stretching. The 
deviation again shows on the lower line of the display. 
In this particular mode, the cent-adjustment follows a function, which is dependent on the 
octave range. It is therefore very important to ascertain the correct octave range on the Tuning 
Set. Errors can be avoided by progressing in semi-tone steps. 

NO STRETCHING

<5>   Number  00 

  
<5> STRETCHING ->

STR.MODERATE

<5>   NUMBER  03 

 
<5> STRETCHING ->

b-2 CENTS:  0.1
<1> PITCH:440.0

a-1 CENTS: 00.0
<1> K-TON:440.0

STR:MODERATE 
<1> TUNE       ->

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<1> TUNE       ->