I uploaded a couple of FPD files that I designed today. The idea was
instigated by a fantasy I had about building a CGS-only synthesizer,
optimizing for panel space. I wanted to use the 5U by 1U MOTM panel
size for compatibility with my cabinets. I thought about using small
jacks like Blacet, but quickly realized that the panel space hog in MOTM
format is the large knobs, and that I could still use 1/4 inch jacks. I
started playing around with some small diameter Alpha pots and
discovered that they fit in a matrix of 1-inch vertical separation by
7/8-inch horizontal separation (the same spacing as the jacks on a MOTM
panel). This meant that the pots can line up directly above the jacks.
The only thing sacrificed is tick marks. The same small Alco knob used
in the Tellun and Encore panels fits here. Comparing the Tellun
staggered pot spacing, I realized that it seems the main reason for
staggering is to accommodate tick marks. Giving up tick marks allows a
1U MOTM panel to fit a combination of 6 pots and 8 jacks, or 8 pots and
6 jacks, with room for a couple of switches or LEDs in between. Using
this format, I was able to pack a CGS 21 Super Psycho Modulation Source
into a 1U panel. It has 8 pots, 7 toggle switches and 1 jack. (Looks a
little tight at the bottom, but should work.) It's similar to the photo
on the CGS site, but omitting two switches and the LEDs. LEDs might be
squeezed in, too, but I'm not a really big fan of LEDs. I never built a
Super Psycho Modulation source, because of all the panel real estate
required in regular MOTM format.
As a second example, I put a CGS 38 and CGS 52 both into 1U using this
template. I made some others as well, such as a dual CGS 64 VCA and the
CGS 77 Serge VCF.
The jack placement in most of these designs can take the 3-Jack bracket
from Bridechamber for mounting the PC boards. I haven't figured out yet
how to mount the CGS 21 PC board on the panel with one jack.
Richard Brewster
http://pugix.comSitting here under two feet of snow in central Virginia, USA.