Discussion about the Korg PolySix synthesizer

I'm also having a tuning problem with my Poly 61. One end of the keyboard is in tune and it gets more and more of of tune as you go towards the bass end. Any suggestions on how to fix it?

Thanks
Ian Harris
iharris@bentspike.com
http://www.bentspike.com

----- Original Message -----
From: goxflee@aol.com
To: PolySix@yahoogroups.com
Sent: Wednesday, June 06, 2001 7:12 PM
Subject: [PolySix] Tuning


Hey-

Hope everyone is doing well. I'm having a minor problem with my poly6. I have to adjust the tuning knob to be very flat to get the "proper" tuning. I'd swear I've seen where you can open it up and get right to the source to get the tuning pot back on track. Any truth to this, or is there the external TUNE knob only to adjust this? Thanks everyone.

Ian

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[Non-text portions of this message have been removed]

Hey-

Hope everyone is doing well. I'm having a minor problem with my poly6. I have to adjust the tuning knob to be very flat to get the "proper" tuning. I'd swear I've seen where you can open it up and get right to the source to get the tuning pot back on track. Any truth to this, or is there the external TUNE knob only to adjust this? Thanks everyone.

Ian

--- In PolySix@yahoogroups.com, "Ian Harris" <iharris@i...> wrote:

> I'm also having a tuning problem with my Poly 61. One end of the

keyboard is in tune and it gets more and more of of tune as you go
towards the bass end. Any suggestions on how to fix it?

>

I have the exact same problem with my Poly six. Anyone have any
suggestions?

Mine is like that too!

To be honest, I've never really found it to be that big a
problem, but I have wondered if there's a simple
calibration I could do to fix it...?


--- ghwelles <GHWelles@bbklaw.com> wrote: > --- In
PolySix@yahoogroups.com, "Ian Harris"

> <iharris@i...> wrote:
> > I'm also having a tuning problem with my Poly 61. One
> end of the
> keyboard is in tune and it gets more and more of of tune
> as you go
> towards the bass end. Any suggestions on how to fix it?
> >
>
> I have the exact same problem with my Poly six. Anyone
> have any
> suggestions?
>
>
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>

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I do not know about the Poly-61; as far as I know it has DCOs, which
generate the frequency in a digital manner. So out of tune in only
a region of the keyboard is per definition "not possible"...
The Poly-6 is different. It is truly analog - at least in this aspect.
There are 6 independent VCOs; each can be tuned seperately with two
potis: low/high, addtionally there are three overall potis
(low/mid/high). Even more, Polysix is using so called "strechted
tuning". This means it is slightly out of tune intentionally; to
gain more movement in the sound. The manual says, this is about
8..12cents over the whole KBD range. I strongly recommend that you
follow the adjustment procedure given in the service manual - at
least the first time you do it. Once you know how it behaves and
which poti is doing what, you can turn away from DVMs, oscilloscopes,
and tuners and trust your ears..
If you do not have the adjustment procedure, let me know; I can send
it to you.



PolySix@yahoogroups.com wrote:

> Mine is like that too!
>
> To be honest, I've never really found it to be that big a
> problem, but I have wondered if there's a simple
> calibration I could do to fix it...?
>
>
> --- ghwelles <GHWelles@bbklaw.com> wrote: > --- In
> PolySix@yahoogroups.com, "Ian Harris"
>
>>><iharris@i...> wrote:
>>>
>>>>I'm also having a tuning problem with my Poly 61. One
>>>
>>>end of the
>>>keyboard is in tune and it gets more and more of of tune
>>>as you go
>>>towards the bass end. Any suggestions on how to fix it?
>>>
>>>I have the exact same problem with my Poly six. Anyone
>>>have any
>>>suggestions?
>>>
>>>
>>>------------------------ Yahoo! Groups Sponsor
>>>
>>>To unsubscribe from this group, send an email to:
>>>PolySix-unsubscribe@egroups.com
>>>
>>>PolySix "Digiest" Page:
>>>http://www.acc.umu.se/~amber/Poly6
>>>
>>>Your use of Yahoo! Groups is subject to
>>>http://docs.yahoo.com/info/terms/
>>>
>>>
>>>
>>>
>>>
>>
>
> =====
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> http://www.felinedream.co.uk
>
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>
>
> To unsubscribe from this group, send an email to:
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>
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>
>
>
> .
>

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.

>>> jo.synth@crossnet.at 04/07/03 02:19PM >>>

I do not know about the Poly-61; as far as I know it has DCOs, which
generate the frequency in a digital manner. So out of tune in only
a region of the keyboard is per definition "not possible"...
The Poly-6 is different. It is truly analog - at least in this aspect.
There are 6 independent VCOs; each can be tuned seperately with two
potis: low/high, addtionally there are three overall potis
(low/mid/high). Even more, Polysix is using so called "strechted
tuning". This means it is slightly out of tune intentionally; to
gain more movement in the sound. The manual says, this is about
8..12cents over the whole KBD range. I strongly recommend that you
follow the adjustment procedure given in the service manual - at
least the first time you do it. Once you know how it behaves and
which poti is doing what, you can turn away from DVMs, oscilloscopes,
and tuners and trust your ears..
If you do not have the adjustment procedure, let me know; I can send
it to you.



PolySix@yahoogroups.com wrote:

> Mine is like that too!
>
> To be honest, I've never really found it to be that big a
> problem, but I have wondered if there's a simple
> calibration I could do to fix it...?
>
>
> --- ghwelles <GHWelles@bbklaw.com> wrote: > --- In
> PolySix@yahoogroups.com, "Ian Harris"
>
>>><iharris@i...> wrote:
>>>
>>>>I'm also having a tuning problem with my Poly 61. One
>>>
>>>end of the
>>>keyboard is in tune and it gets more and more of of tune
>>>as you go
>>>towards the bass end. Any suggestions on how to fix it?
>>>
>>>I have the exact same problem with my Poly six. Anyone
>>>have any
>>>suggestions?
>>>
>>>
>>>------------------------ Yahoo! Groups Sponsor
>>>
>>>To unsubscribe from this group, send an email to:
>>>PolySix-unsubscribe@egroups.com
>>>
>>>PolySix "Digiest" Page:
>>>http://www.acc.umu.se/~amber/Poly6
>>>
>>>Your use of Yahoo! Groups is subject to
>>>http://docs.yahoo.com/info/terms/
>>>
>>>
>>>
>>>
>>>
>>
>
> =====
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> http://www.felinedream.co.uk
>
> __________________________________________________
> Yahoo! Plus
> For a better Internet experience
> http://www.yahoo.co.uk/btoffer
>
>
> To unsubscribe from this group, send an email to:
> PolySix-unsubscribe@egroups.com
>
> PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
>
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>
>
>
> .
>

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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.
>
>

THANKS I will try that immediately!

>>> jo.synth@crossnet.at 04/10/03 01:49PM >>>

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.
>
>

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> Switch SW1 to front position and enjoy the "Schwebung" (dont know the

English word..) created by the stretched tuning.

I must admit having tuned a few P6s in my time, I prefer the sound of
unstretched tuning on any synth. Whilst I can understand the need to
stretch tune pianos, I don't really see the point of doing this to VCOs.
The harmonics are locked to the fundamental whatever the base frequency
is tuned to.

I tuned my own P6 to true linear fashion. The sound of it fitted in
better into my mixes, and it sounded better on its own.

Regards,

Tony Allgood Penrith, Cumbria, England

Oakley Sound Systems www.oakleysound.com
Modular Synthesisers www.oakleysound.com/projects.htm

Yeah, this sounds wierd to me?!
Pianos get stretch-tuned because their strings don't
behave like perfect linear harmonic oscillators,
so the harmonics generated by strings are slightly
sharp (? I think it is...)
If you didn't stretch tune it, you'd hear (for instance)
beats when you play a simple octave, as the 1st harmonic
on the lower note would be out of tune with the fundamental

of the upper note...

....but the Polysix's VCOs surely produce sawtooth
and rectangle waves where the harmonics are linear?
Thus there'd be no need for stretch tuning...

Unless the PS-6 VCOs are a bit wierd!?

Personally, I'm no great fan of equal temperament,
and love mucking around with microtunings and stuff -
but the PS6 stretch-tuning calibration doesn't sound
like the ability to alter temperament (ie, change the
value of the various "semitones" in the scale) ...


--- Tony Allgood <oakley@techrepairs.freeserve.co.uk>
wrote: > > Switch SW1 to front position and enjoy the
"Schwebung"

> (dont know the
> English word..) created by the stretched tuning.
>
> I must admit having tuned a few P6s in my time, I prefer
> the sound of
> unstretched tuning on any synth. Whilst I can understand
> the need to
> stretch tune pianos, I don't really see the point of
> doing this to VCOs.
> The harmonics are locked to the fundamental whatever the
> base frequency
> is tuned to.
>
> I tuned my own P6 to true linear fashion. The sound of it
> fitted in
> better into my mixes, and it sounded better on its own.

=====
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
http://www.felinedream.co.uk

__________________________________________________
Yahoo! Plus
For a better Internet experience
http://www.yahoo.co.uk/btoffer

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.
> >
> >

I am having a terrible time tuning my PolySix. I can get all 6 banks
in tune with each other no problem.

I cannot get C0, C3, and C6 in tune at the same time. To keep
consistency, I checked each C on the same bank.

I've been through the calib procedure to no avail.

Can someone guide me to a potential point of failure?

--- In PolySix@yahoogroups.com, "sdlarch1" <sdlarch@...> wrote:

>
> I am having a terrible time tuning my PolySix. I can get all 6 banks
> in tune with each other no problem.
>
> I cannot get C0, C3, and C6 in tune at the same time. To keep
> consistency, I checked each C on the same bank.
>
> I've been through the calib procedure to no avail.
>
> Can someone guide me to a potential point of failure?
>

Try to get only the first oscillator in tune first.
GENTLY take all SSM's out except of the first oscillator,a
and press the Unison key. Now you can hear sound with every note you
play.

Use VR11, VR12, VR1, VR3, VR15 to get the scale perfect.
This is a lot of trial and error. Start with positioning them all to
the center. Use VR15 from time to time to correct to the right pitch of
A440 for example.

Let me know how it works.

You mean VR 10 instead of 12, right?

It's like I don't have enough throw in the pots. The most logical approach
I see is that I would center all VRs 1, 3, 10, 11, & 15 - and then use vr15
to center C3. With these settings, C1 is way (+200 cents) sharp, and C6 is
way (-200 cents) flat. I can't swing tune high and low far enough apart to
get the complete range in tune.

What damage could be caused by adding resistance to the pots (high and low)
to get more swing out of them?

On 4/24/06, gil_we <gil_we@yahoo.com> wrote:
>
> --- In PolySix@yahoogroups.com, "sdlarch1" <sdlarch@...> wrote:
> >
> > I am having a terrible time tuning my PolySix. I can get all 6 banks
> > in tune with each other no problem.
> >
> > I cannot get C0, C3, and C6 in tune at the same time. To keep
> > consistency, I checked each C on the same bank.
> >
> > I've been through the calib procedure to no avail.
> >
> > Can someone guide me to a potential point of failure?
> >
>
>
> Try to get only the first oscillator in tune first.
> GENTLY take all SSM's out except of the first oscillator,a
> and press the Unison key. Now you can hear sound with every note you
> play.
>
> Use VR11, VR12, VR1, VR3, VR15 to get the scale perfect.
> This is a lot of trial and error. Start with positioning them all to
> the center. Use VR15 from time to time to correct to the right pitch of
> A440 for example.
>
> Let me know how it works.
>
>
>
>
>
> PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
>
>
> ------------------------------
> YAHOO! GROUPS LINKS
>
>
> - Visit your group "PolySix <http://groups.yahoo.com/group/PolySix>"
> on the web.
>
> - To unsubscribe from this group, send an email to:
> PolySix-unsubscribe@yahoogroups.com<PolySix-unsubscribe@yahoogroups.com?subject=Unsubscribe>
>
> - Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> Service <http://docs.yahoo.com/info/terms/>.
>
>
> ------------------------------
>


[Non-text portions of this message have been removed]

You know, I got those backwards. The low end is flat and the high end is
sharp.

On 4/25/06, Sam Larch <sdlarch@gmail.com> wrote:
>
> You mean VR 10 instead of 12, right?
>
> It's like I don't have enough throw in the pots. The most logical
> approach I see is that I would center all VRs 1, 3, 10, 11, & 15 - and then
> use vr15 to center C3. With these settings, C1 is way (+200 cents) sharp,
> and C6 is way (-200 cents) flat. I can't swing tune high and low far enough
> apart to get the complete range in tune.
>
> What damage could be caused by adding resistance to the pots (high and
> low) to get more swing out of them?
>
>
> On 4/24/06, gil_we <gil_we@yahoo.com> wrote:
> >
> > --- In PolySix@yahoogroups.com, "sdlarch1" <sdlarch@...> wrote:
> > >
> > > I am having a terrible time tuning my PolySix. I can get all 6 banks
> > > in tune with each other no problem.
> > >
> > > I cannot get C0, C3, and C6 in tune at the same time. To keep
> > > consistency, I checked each C on the same bank.
> > >
> > > I've been through the calib procedure to no avail.
> > >
> > > Can someone guide me to a potential point of failure?
> > >
> >
> >
> > Try to get only the first oscillator in tune first.
> > GENTLY take all SSM's out except of the first oscillator,a
> > and press the Unison key. Now you can hear sound with every note you
> > play.
> >
> > Use VR11, VR12, VR1, VR3, VR15 to get the scale perfect.
> > This is a lot of trial and error. Start with positioning them all to
> > the center. Use VR15 from time to time to correct to the right pitch of
> > A440 for example.
> >
> > Let me know how it works.
> >
> >
> >
> >
> >
> > PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> >
> >
> > ------------------------------
> > YAHOO! GROUPS LINKS
> >
> >
> > - Visit your group "PolySix<http://groups.yahoo.com/group/PolySix>"
> > on the web.
> >
> > - To unsubscribe from this group, send an email to:
> > PolySix-unsubscribe@yahoogroups.com
> > <PolySix-unsubscribe@yahoogroups.com?subject=Unsubscribe>
> >
> > - Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> > Service <http://docs.yahoo.com/info/terms/>.
> >
> >
> > ------------------------------
> >
>
>


[Non-text portions of this message have been removed]

change the opto on the filter pcb, I'll put money on it

--- In PolySix@yahoogroups.com, "sdlarch1" <sdlarch@...> wrote:
>
> I am having a terrible time tuning my PolySix. I can get all 6 banks
> in tune with each other no problem.
>
> I cannot get C0, C3, and C6 in tune at the same time. To keep
> consistency, I checked each C on the same bank.
>
> I've been through the calib procedure to no avail.
>
> Can someone guide me to a potential point of failure?
>

Change the opto, this usually causes the tunig to be impossible to
set up..

--- In PolySix@yahoogroups.com, "Sam Larch" <sdlarch@...> wrote:
>
> You mean VR 10 instead of 12, right?
>
> It's like I don't have enough throw in the pots. The most logical
approach
> I see is that I would center all VRs 1, 3, 10, 11, & 15 - and then
use vr15
> to center C3. With these settings, C1 is way (+200 cents) sharp,
and C6 is
> way (-200 cents) flat. I can't swing tune high and low far enough
apart to
> get the complete range in tune.
>
> What damage could be caused by adding resistance to the pots (high
and low)
> to get more swing out of them?
>
>
> On 4/24/06, gil_we <gil_we@...> wrote:
> >
> > --- In PolySix@yahoogroups.com, "sdlarch1" <sdlarch@> wrote:
> > >
> > > I am having a terrible time tuning my PolySix. I can get all 6
banks
> > > in tune with each other no problem.
> > >
> > > I cannot get C0, C3, and C6 in tune at the same time. To keep
> > > consistency, I checked each C on the same bank.
> > >
> > > I've been through the calib procedure to no avail.
> > >
> > > Can someone guide me to a potential point of failure?
> > >
> >
> >
> > Try to get only the first oscillator in tune first.
> > GENTLY take all SSM's out except of the first oscillator,a
> > and press the Unison key. Now you can hear sound with every note
you
> > play.
> >
> > Use VR11, VR12, VR1, VR3, VR15 to get the scale perfect.
> > This is a lot of trial and error. Start with positioning them all
to
> > the center. Use VR15 from time to time to correct to the right
pitch of
> > A440 for example.
> >
> > Let me know how it works.
> >
> >
> >
> >
> >
> > PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> >
> >
> > ------------------------------
> > YAHOO! GROUPS LINKS
> >
> >
> > - Visit your group "PolySix
<http://groups.yahoo.com/group/PolySix>"
> > on the web.
> >
> > - To unsubscribe from this group, send an email to:
> > PolySix-unsubscribe@yahoogroups.com<PolySix-
unsubscribe@yahoogroups.com?subject=Unsubscribe>
> >
> > - Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> > Service <http://docs.yahoo.com/info/terms/>.
> >
> >
> > ------------------------------
> >
>
>
> [Non-text portions of this message have been removed]
>