Hi,
This sounds like another job that might require access to an
oscilloscope! What might be an idea is to generate a single known
waveform (i.e. a saw at A440) on one voice and then, starting at the
output (the hot end of VR1 on the KLM369) work back through the
signal path until you reach the voice mixer (which is the output from
op-amp IC10) So:
KLM369 CN15/3 -> KLM368 CN14/1, KLM366 CN14/1
Then compare the waveforms at each waypoint. My feeling here is that
you might find the signal is getting affected by the circuitry on the
effects boards. Yes, of course, but not in a way we want. Does the
nature of the sound change as you operate the effect type and
intensity at all?
Cheers,
Andy
--- In PolySix@yahoogroups.com, "wasteking1" <wasteking1@...> wrote:
>
> im still fooling with my '367-fixed' polysix and it seems that when
i
> play multiple notes simultaneously, the background hiss/white noise
> increases as if it is amplified with each sucessive added voice as
> notes are added to a chord . some sounds hide it, but its
noticeable
> on many patches. I know i have this noisy pulsing VCA on the MG
> section that i posted about before, and was told to check out
around IC
> 20/21 on the 387. While this other white noise doesnt pulse , it
is
> similar in tonal quality . The results of this is that the polysix
just
> sounds 'dirty', and seems not right. could they be related?
>