The description in the adjustment procedure is for the
"Old Production", you are right. This maps as follows to the
"New Production" (n.b. old/new is only valid for the KLM-366 board,
all other boards are just one version)
+------+-----+---------------+
| OLD | NEW | meaning |
+======+=====+===============+
Overall pots:
+------+-----+---------------+
| VR1 | VR1 | tune mid |
+------+-----+---------------+
| - | VR2 | tune high |
+------+-----+---------------+
| VR3 | VR3 | tune low |
+------+-----+---------------+
| VR4 | VR4 | EG intensity |
+------+-----+---------------+
| VR5 | VR5 | KBD tracking |
+------+-----+---------------+
| - | VR13| KBD track offs|
+------+-----+---------------+
| - | VR14| DAC MSB adj |
| | | ("D#4 - E4") |
+------+-----+---------------+
|KLM396| VR15| tune mid |
| VR1 | | |
+------+-----+---------------+
Voice pots:
+------+-----+---------------+
| VR6 | VR6 | VCF resonance |
+------+-----+---------------+
| VR7 | VR6 | VCF offset |
+------+-----+---------------+
| VR8 | VR8 | VCF cutoff |
+------+-----+---------------+
| VR9 | VR9 | VCA adjust |
+------+-----+---------------+
| VR10 | VR10| VCO tune low |
+------+-----+---------------+
| VR11 | VR11| VCO tune high |
+------+-----+---------------+
| VR12 | VR12| EG time |
+------+-----+---------------+
Be sure to move the sliding switch towards the back, which is normal
tuning, when doing the tuning procedure. The service manual is not
clear in this point (maybe better for "Old Production"). When finished
you (may) move it towards the front and enable the stretched tuning.
You can verify the tuning mode easily with a tuner when playing a high
note: when switching the sliding switch back and forth the lower pitch
is normal tuning, the higher pitch is stretched tuning, which adds even
more richness and movement to the sound.
I do it this way:
1) move the overall tuning pots VR2, VR3 (hi, low) to center position
2) move VR10, VR11 of unit 0 to center position.
3) now tune unit 0 with the overall pots, using a chromatic tuner.
this can be a little tricky, as all pots are influencing each other.
you may adjust VR10 and/or VR11 to gain perfect tuning at low/high
notes.
4) use (overall) pots VR14, VR15 to find the best compromise in
deviation from ideal tuning during the whole scale (dont forget to
change the footage switch on the control panel; i.e. the lowest note
is C0 at a 16' setting, the highest not is C5 at 4')
5) when satisfied with tuning unit 0 take a break; your ears will need
it!
check that pots are about in the middle; none should be cranked to
one edge; you can get into trouble later on!
6) then tune units 1..5 ∗to unit 0∗! dont tune units 1..5 individually!
7) check tuning with a 6-voice-same-note-chord in chord memory
Dont be disturbed that you cannot make it perfect! It is 6
∗independent∗ oscillators with analogue circuitry - they never will
be 100% perfect. After all, thats what we folks want!
8) Switch SW1 to front position and enjoy the "Schwebung" (dont know
the English word..) created by the stretched tuning. Note the
difference between the 6-voice-same-note-chord and Unison mode!
Thats ... extraordinary!
Btw. if you are in this that deep you may remove D1 from KLM-366. This
gives you both Saw and Pulse wave ∗at the same time∗ in "SAW" position.
You still can kill the pulse wave by turning the PW control fully
clockwise for a saw-only setting.
I hope this helps
Johannes
PolySix@yahoogroups.com wrote:
> Thanks for the reply:
>
> I have the procedure form the manual, and it was very unclear, and
> referred to VRs that did not exist and did not refere to ones that did
> (The old verses new production problem.) Mine is a new production
> board. What do each of the VR's do? On the 367 board there are VR1,
> VR2. VR3, VR4, VR14, a D#-E4 VR, etc.
>
> Any help is appreciated.
>
>