[AH] 4-voice modular rack - Crazy?

From Brian Willoughby
Sent Fri, Apr 20th 2018, 00:49

Hello all,

BACKGROUND:
I have a stack of polysynths and a mono, all of which have extensive =
modulation routing. These are SSM and CEM, plus some digital in places. =
I don=E2=80=99t have any modular gear, unless you count the PAiA ADSR =
that I built in high school that was stillborn due to electrostatic =
discharge.

I read about the all-transistor AJH Synth (on this list, of course), and =
actually got interested in putting together their MiniMod system. Mostly =
this is because I don=E2=80=99t have any synths that are pure =
transistor.

FAST FORWARD TO THE PRESENT:
I=E2=80=99m currently considering a four-voice modular. I briefly =
thought that expanding the MiniMod to 4 VCO modules would at least be =
interesting, even though that setup would be paraphonic. I could use the =
same modules for either a hyper minimoog or a limited 4-voice. Then the =
obvious enhancements occurred to me: 1) add 3 more VCF modules to =
dedicate 1 to each voice; 2) add 4 more VCO modules to allow sync =
modulation of the other 4 VCO modules; 3) maybe simplify a bit and just =
use the PWM inputs on the original 4 VCO modules for timbre modulation =
rather than sync.

Things obviously are getting out of control (in terms of a first modular =
rack - in size, not to mention price). Looking around at other modules =
on the market, I see the 2hp line which includes a couple of VCO modules =
(maybe just two revisions of the same product lineage). Since you really =
only hear the quality of one VCO when two are synced together (well, =
unless you actually mix both together, which can sound bad), I=E2=80=99m =
thinking that I don=E2=80=99t really need a full-size, transistor-only =
AJH Synth VCO for the second set of 4 VCO modules. Pairing a 2hp VCO and =
an AJH Synth VCO takes much less space for a 2-VCO sync pair.

I also see some nice 4-input mixer modules that would help. The AJH =
Synth VCF is quite handy, with its minimoog-style 3-input mixer, but =
that only saves me a module if I operate in paraphonic mode, and even =
then it only handles 3 voices. The Rebel Technology Mix 04 and the =
Synthrotek MST Unity Gain Mixer look like fairly compact modules for =
combining the 4 voices.

Anyway, I=E2=80=99m realizing that every time I think about this, I come =
up with a different patch, which then requires me to include a set of 4 =
more modules to implement the new patch idea. It=E2=80=99s beginning to =
sound like building a 4-voice modular is a crazy idea, so I=E2=80=99m =
here to ask what experience folks have to trying something insane like =
this.

Brian Willoughby
Sound Consulting