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2013-07-08 by Nicolas
Hi everybody, Is there any way to adjust the range of the pitch bend on a Moog Rogue? I would like to adjust so that it bend up to one octave when when it is full up. Same thing in the opposite direction. If there is no adjustment, is there any mod that can be done on the circuit? Thank you! Nicolas
2013-07-11 by duncan
have you got the schematics? all of the pitch adjustments are summed onto the 1st input of ICU2A. the pitch wheel has +12 & -12 connected to its two ends, & the "wiper" goes via two diodes (to create a dead-band) & R25 (620k) onto the summing buss & thence to U2A. so.... find R25 & reduce its value to (say) 330k, & see if that does what you want. I put a trimmer across mine so I could fine-tune it to +/- an octave. hth- duncan. --- In vintagesynthrepair@yahoogroups.com, "Nicolas" <nico678@...> wrote:
> > Hi everybody, > > Is there any way to adjust the range of the pitch bend on a Moog Rogue? > I would like to adjust so that it bend up to one octave when when it is full up. Same thing in the opposite direction. > If there is no adjustment, is there any mod that can be done on the circuit? > Thank you! > > Nicolas >
2013-07-11 by duncan
(schemo added to files section) --- In vintagesynthrepair@yahoogroups.com, "duncan" <ferrograph@...> wrote:
> > have you got the schematics? all of the pitch adjustments are summed onto the 1st input of ICU2A. > > the pitch wheel has +12 & -12 connected to its two ends, & the "wiper" goes via two diodes (to create a dead-band) & R25 (620k) onto the summing buss & thence to U2A. > > so.... find R25 & reduce its value to (say) 330k, & see if that does what you want. I put a trimmer across mine so I could fine-tune it to +/- an octave. > > hth- > duncan. > > --- In vintagesynthrepair@yahoogroups.com, "Nicolas" <nico678@> wrote: > > > > Hi everybody, > > > > Is there any way to adjust the range of the pitch bend on a Moog Rogue? > > I would like to adjust so that it bend up to one octave when when it is full up. Same thing in the opposite direction. > > If there is no adjustment, is there any mod that can be done on the circuit? > > Thank you! > > > > Nicolas > > >
2013-07-13 by Nicolas
Hi, Thank you for the information. I was able to increase the pitch bend wheel range by lowering R25 to 470K and adding 100K trimpot in serie. I also add to adjust the center screw of the wheel on the potentiometer in order to have good linearity between the center and the octaves. I tuned the oscillators and now everything is perfect. Thank you! Nicolas --- In vintagesynthrepair@yahoogroups.com, "duncan" <ferrograph@...> wrote:
> > have you got the schematics? all of the pitch adjustments are summed onto the 1st input of ICU2A. > > the pitch wheel has +12 & -12 connected to its two ends, & the "wiper" goes via two diodes (to create a dead-band) & R25 (620k) onto the summing buss & thence to U2A. > > so.... find R25 & reduce its value to (say) 330k, & see if that does what you want. I put a trimmer across mine so I could fine-tune it to +/- an octave. > > hth- > duncan. > > --- In vintagesynthrepair@yahoogroups.com, "Nicolas" <nico678@> wrote: > > > > Hi everybody, > > > > Is there any way to adjust the range of the pitch bend on a Moog Rogue? > > I would like to adjust so that it bend up to one octave when when it is full up. Same thing in the opposite direction. > > If there is no adjustment, is there any mod that can be done on the circuit? > > Thank you! > > > > Nicolas > > >