OK Johannes, I tried your tuning method . . . and it WORKS! My Synth
now is in tune. THANKS. They should call you, like Steve Martin's
heroic dog, "Lifesaver".
--- In
PolySix@yahoogroups.com, Johannes Hausensteiner <jo.synth@c...>
wrote:
> 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.
> >
> >