All about the Roland Jupiter-series

does it change once the synth warms up?  i find that it takes a half hour or so for my JP6 to get stable.

or maybe its one of the modulation sources on the left still detuning the VCO2 even though it's center point is accurate?



otherwise have you tried turning the VCO 2 and main pitch control fully clockwise and counter clockwise a few times?  then put them back to center and hit tune.

z
 
NEW ALLIANCE EAST!!!!

--------------------------------------


New Alliance East - Mastering

New Alliance East - Facebook

X :::: B :::: S





On Thursday, December 5, 2013 10:47 AM, "bob@..." <bob@...> wrote:
 
  
Hi

Just wondering if anyone else has had this issue, and if so, if they have any insight into how to cure it.

With the Tune knob set in its' mid position I have quite a detune on all voices. If I move the knob into a 2 o'clock position I'm roughly in unison.

I've calibrated the synth but the issue persists.
If I measure the voltage on the pot it's as it should be ie. 2.5V at 12 o'clock,
Looking at the output of the multiplexer I can see that the level is consistent with the other controls.

Any constructive input most appreciated.


Bob

No it's constant

I've made some progress. It looks like the issue is either the bender 
board or the jack board.
If I disconnect these (M4J/M4J) and then monitor the VCA output pin, I 
get unison when I'm centred.
Obviously something coming in on that connector (Bender VCO 2) that's 
throwing it out.

Might get a chance tomorrow to look further.


Will keep you posted.



B

On 05/12/2013 17:24, Nick Zampiello wrote:
> does it change once the synth warms up?  i find that it takes a half 
> hour or so for my JP6 to get stable.
>
> or maybe its one of the modulation sources on the left still detuning 
> the VCO2 even though it's center point is accurate?
>
>
> otherwise have you tried turning the VCO 2 and main pitch control 
> fully clockwise and counter clockwise a few times?  then put them back 
> to center and hit tune.
>
> z
> NEW ALLIANCE EAST!!!!
>
> --------------------------------------
>
> *New Alliance East* - Mastering <http://newallianceeast.com/>
>
>
>       New Alliance East - Facebook
>       <https://www.facebook.com/newallianceeast>
>
>
>       *X :::: B :::: S
>       <http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&sqi=2&ved=0CC0QFjAC&url=http%3A%2F%2Fxbs111.wordpress.com%2F&ei=rNMqT4LLMcmEsAKtk7WwDg&usg=AFQjCNHYjcyJYRf58A81_tpPpaKYjc2PAw&sig2=1gIhPv8oUH76FChuLviaGg>*
>
> *
> *
> *
> *
> *
>
> On Thursday, December 5, 2013 10:47 AM, "bob@..." 
> <bob@...> wrote:
> Hi
>
> Just wondering if anyone else has had this issue, and if so, if they 
> have any insight into how to cure it.
>
> With the Tune knob set in its' mid position I have quite a detune on 
> all voices. If I move the knob into a 2 o'clock position I'm roughly 
> in unison.
>
> I've calibrated the synth but the issue persists.
> If I measure the voltage on the pot it's as it should be ie. 2.5V at 
> 12 o'clock,
> Looking at the output of the multiplexer I can see that the level is 
> consistent with the other controls.
>
> Any constructive input most appreciated.
>
>
> Bob
>
>
> *
> **
> *
> 
> *

OK. Issue sorted.

The fault was down to dirt in the VCO-2 bend switch. Once cleaned and 
the bender recalibrated the problem has gone.

Bit of a weird one to be sure.

On 05/12/2013 17:24, Nick Zampiello wrote:
> does it change once the synth warms up?  i find that it takes a half 
> hour or so for my JP6 to get stable.
>
> or maybe its one of the modulation sources on the left still detuning 
> the VCO2 even though it's center point is accurate?
>
>
> otherwise have you tried turning the VCO 2 and main pitch control 
> fully clockwise and counter clockwise a few times?  then put them back 
> to center and hit tune.
>
> z
> NEW ALLIANCE EAST!!!!
>
> --------------------------------------
>
> *New Alliance East* - Mastering <http://newallianceeast.com/>
>
>
>       New Alliance East - Facebook
>       <https://www.facebook.com/newallianceeast>
>
>
>       *X :::: B :::: S
>       <http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&sqi=2&ved=0CC0QFjAC&url=http%3A%2F%2Fxbs111.wordpress.com%2F&ei=rNMqT4LLMcmEsAKtk7WwDg&usg=AFQjCNHYjcyJYRf58A81_tpPpaKYjc2PAw&sig2=1gIhPv8oUH76FChuLviaGg>*
>
> *
> *
> *
> *
> *
>
> On Thursday, December 5, 2013 10:47 AM, "bob@..." 
> <bob@...> wrote:
> Hi
>
> Just wondering if anyone else has had this issue, and if so, if they 
> have any insight into how to cure it.
>
> With the Tune knob set in its' mid position I have quite a detune on 
> all voices. If I move the knob into a 2 o'clock position I'm roughly 
> in unison.
>
> I've calibrated the synth but the issue persists.
> If I measure the voltage on the pot it's as it should be ie. 2.5V at 
> 12 o'clock,
> Looking at the output of the multiplexer I can see that the level is 
> consistent with the other controls.
>
> Any constructive input most appreciated.
>
>
> Bob
>
>
> *
> **
> *
> 
> *

great! it's always a treat when it's that easy with old gear!

z
 
NEW ALLIANCE EAST!!!!

--------------------------------------


New Alliance East - Mastering

New Alliance East - Facebook

X :::: B :::: S





On Friday, December 6, 2013 5:08 AM, Robert Stewart <bob@blzproductions.com> wrote:
 
  
OK. Issue sorted.

The fault was down to dirt in the VCO-2 bend switch. Once cleaned
    and the bender recalibrated the problem has gone.

Bit of a weird one to be sure.




On 05/12/2013 17:24, Nick Zampiello wrote:

  
>does it change once the synth warms up?  i find that it takes a half hour or so for my JP6 to get stable.
>
>
>or maybe its one of the modulation sources on the left still detuning the VCO2 even though it's center point is accurate?
>
>
>
>
>
>otherwise have you tried turning the VCO 2 and main pitch control fully clockwise and counter clockwise a few times?  then put them back to center and hit tune.
>
>
>z
> 
>NEW ALLIANCE EAST!!!!
>
>--------------------------------------
>
>
>New Alliance East - Mastering
>
>
>New Alliance East - Facebook
>X :::: B :::: S
>
>
>
>
>
>
>
>On Thursday, December 5, 2013 10:47 AM, "bob@..." <bob@...> wrote:
> 
>  
>Hi
>
>Just wondering if anyone else has
                                    had this issue, and if so, if they
                                    have any insight into how to cure
                                    it.
>
>With the Tune knob set in its' mid
                                    position I have quite a detune on
                                    all voices. If I move the knob into
                                    a 2 o'clock position I'm roughly in
                                    unison.
>
>I've calibrated the synth but the
                                    issue persists.
>If I measure the voltage on the pot
                                    it's as it should be ie. 2.5V at 12
                                    o'clock,
>Looking at the output of the
                                    multiplexer I can see that the level
                                    is consistent with the other
                                    controls.
>
>Any constructive input most
                                    appreciated.

>
>
>Bob
>
>