[sdiy] Prophet 5 Poly-Mod / Filter Env calibration

[Gil W.]

Thanks, will try both suggestions and report !



--------------------------------------------
On Sat, 10/19/13, Tom Wiltshire <tom at electricdruid.net> wrote:

 Subject: Re: [sdiy] Prophet 5 Poly-Mod / Filter Env calibration
 To: "Gil W." <gil_we at yahoo.com>
 Cc: synth-diy at dropmix.xs4all.nl
 Date: Saturday, October 19, 2013, 12:40 PM
 
 Looking at the service manual (I was
 looking at Rev 3 - you didn't say which you have) I'd say
 try the P-Mod Env Balance trimmer for the voice at fault. It
 adjusts the envelope as it goes through the CA3280 VCA to
 the PolyMod, and an offset there would give the effect
 you're getting.
 The P Mod Osc might do the same job since it also adjusts
 the offsets on the Poly Mod, but it's not really the right
 trim for the job.
 
 
 On 19 Oct 2013, at 08:41, Gil W. <gil_we at yahoo.com>
 wrote:
 
 > Hello friends !
 > 
 > Have a small question. Since I got it, my P5 acts the
 following way -
 > 
 > Under the Poly-Mod section if I set the Filter Env pot
 to minimum,
 > and select the Freq A button ON, then on the Filter Env
 section set Attack, Decay and Release to minimum,
 > turning the Sustain knob up and down, the pitch of Osc
 A changes as expected,
 > but one voice will always sound too sharp and out of
 tune in respect to the other four.
 > 
 > I wonder what should be re-set, or which trimpot is
 responsible for this.
 > see the following trimpot but unsure which one to set:
 > 
 > P-Mod Env Balance (for all 5 voices)
 > Filter Balance (for all 5 voices)
 > Filter Scale (for all 5 voices)
 > P Mod Osc Balance
 > 
 > Thanks for any advice !
 > _______________________________________________
 > Synth-diy mailing list
 > Synth-diy at dropmix.xs4all.nl
 > http://dropmix.xs4all.nl/mailman/listinfo/synth-diy