>Thank you. I hope the pre-order phase is not closed
I've ordered the boards from the factory already, but I always get more than
I've ordered (and have to pay them: small print of contract that I have to
take over-production), and I also order a few more than I have pre-orders
for. :)
>I guess a third way to build the varislope would be to omit the
>modulation source but keep the DG419 so it can still be a phaser
>or filter.
Yes. And there are probably a hundred other options, too. I leave this to
the diy-builder himself.
>Personally, I'm not sure about this modulation source. I suspect
>that, on my unit, the waveform pot would be permanently stuck in
>pure sine position, making the scanner redundant.
I am ∗very∗ sure about this modulation source, because I came to love it in
my JH-4 synthesizer module over many years.
Don't under-estimate the Sample&Hold modulation on a phaser with high
resonance! And this is a very special S&H, with a kind of overshot or spike
(for lack of better description) at the beginning of each new random sample,
which makes the S&H more "agressive" than a "perfect" S&H would be.
But there is more:
The waveform crossfading ("scanner") is arranged ina way that S&H is
adjoining "square" on the left side, and "self-modulation" on the right
side. That means, in S&H position you have true random staircases. Turn the
waveform pot slightly to the left, and you get a tad of regular rectangle
mixed in: the steps become less random in a way that large steps are more
likely. Turn the waveform pot slightly to the right, and the random S&H gets
mixed with the dirt of an audio-rate self-modulated filter. That's
especially impressive at high resonance settings. I got the idea for this
from the Prophet 5's Poly-Modulation and the CS-50's and Minimoog's external
modulation input, and - for a phaser application - from the EMS Synthi
HiFli.
>The other
>sources I see myself using (velocity, EG and sawtooth LFO) all
>have to come from other modules anyway.
Yes, it makes a lot of sense to use external modualtion sources. My on-board
modulation source is kind of special (I hope!), but it doesn't have saw
waveforms, for instance. And for VCF applications, you need an ADSR of
course.
>In theory, each pole could individually be switched between
>all-pass (phaser) and low-pass (filter) under voltage control. If
>all poles are sonically interchangeable, a single CV could be
>used with the number of LP poles being 6/5 of the CV. No idea how
>to do that, nor how useful it would be.
I'm not entirely sure if I understand what you mean. But the 6 stages are
interchangeable only with the "Slope" (or pole spread) potentiometer at ccw
position. When the poles are spread apart, it makes a difference which one
gets the complementary zero (= switchet to all pass), and which one doesn't.
JH.