Archive of the former Yahoo!Groups mailing list: Discussion about the Korg PolySix synthesizer

hello,
I just midified (verry simple: only midi in / note on/off) my polysix.
now, I'd like to tune each voice and adjust the filter parameters.

- when I do an apreggio I hear 5 even/slightly detuned sounds and one
with an accent..

here is a text version of the service manual.
could you comment it / tell me you experiences ..

benjamin wild


4.7. Pitch check and adjustment:
--------------------------------
Set OCTAVE to 4'; leave others at normal.

4.7.1 Change circuit board slide switch (SW1) to opposite position
(away from
VR1).

4.7.2 Play C6 and adjust VR11 to obtain 0 cent.

4.7.3 Repeat step 4.7.2 for units No. 0 .. No. 5.

4.7.4 Play C2 and adjust KLM-396 VR1 (= KLM-366 VR15) to obtain 0
cent. Do
this for one unit.

4.7.5 Set OCTAVE to 16', play C2 and adjust VR10 to obtain 0 cent.

4.7.6 Repeat step 4.7.5 for each unit. (VR3 is used to adjust for
deviation of
all units).

4.7.7 Play C1, C2, C3, C4, C5, and C6, and confirm that each unit's
deviation
is within specifications. (Refer to Poly-6 deviation standards).


10 | \____
|
\____ __
5 | \____
____/
| \_________________________________/
|
0
+----------------------------------------------------------------
C0 C1 C2 C3 C4 C5
C6 C7

|<----------------- 4' ---------------->|
|<----------------- 8' ---------------->|
|<---------------- 16'----------------->|

PS-6 VCO octave deviation standards
at the final inspection at our factory


4.7.8 Check to confirm that deviation between adjacent octaves
is within
specifications. (For unit 0 only).
(Refer to VCO adjacent octave deviation standards).


+10 |
| ___ |
| \___ |
| \___________________________________
| \______
0 |
________________________________________________________________
| ______
| ___________________________________/
| ___/ |
| ___/ |
-10 |
C0 C1 C2 C3 C4 C5
C6 C7

|<----------------- 4' ---------------->|
|<----------------- 8' ---------------->|
|<---------------- 16'----------------->|

PS-6 VCO adjacent octave deviation standards
at the final inspection at our factory


4.7.9 Confirm that difference between 4' D#4 and E4 is within
2 cents.
(Switch between POLY and UNISON and check unit 0 only).

4.7.10 Switch SW1 to the front while playing C6 (stretch tuning)
and confirm
+8..+12 cent.

4.7.11 Confirm difference of no more than 2 cents between 4' G5 and
G#5. Unit
0 only is OK.

4.7.12 Confirm that KLM-366's VR1 is approximately in the center
position and
not turned in the clockwise or counterclockwise directions.