ASM-1 Faceplates for sale (?)

[Christopher List]

Hi List - 

I talked to Gene a while ago about this, then dropped it because I thought it 
would be too hard to get something everyone was happy with... Since then I've 
gotten my girlfriend into synths, so I've been thinking about giving her an 
ASM-1 with a small analog sequencer built into a briefcase as a birthday gift. 
This has prompted me to pick up the following idea again....

My idea was to get faceplates made for the ASM-1 in the same way that Gene made 
the PC boards, then sell them to cover the set-up costs. It's been a while 
since I looked into it, but I know there are some places nearby where I can get 
faceplates done with high quality silkscreens for about $40-60 each.

The layout I'm working on is as follows:

- 4-space standard rack size
- White lettering on black aluminum
- Holes are spaced to accomodate up to 1/4" jacks (obviously this leaves enough 
room for banana jacks) holes for jacks are marked by a small "+" that's smaller 
than an 1/8 jack - so it won't show.
- It's up to you to drill all holes (the place I was gonna take this to will 
drill holes, but then they may be the wrong size for some people)
- Dial markings are for knobs with a max "skirt" diameter of about .85"
- Pots of up to 1" diameter will fit behind the panel, knobs are spaced at 
least 1.3" center to center
- Border of .8" on each side for standard rack rails
- Border of at least .4" on top and bottom
- Dial markings are very Serge-like
- I figure we could mount the ASM-1 board behind the front panel, parallel to 
the panel, using 1" stand-offs (the board is smaller than 17"x6")

I've included some changes / additions to Gene's design based on my own tastes 
(sorry Gene!) it's stuff like this that I struggled with when deciding to do 
this, I've outlined them below.

I've included the following knobs / jacks

** VCOs (2)
Jacks:
2 * 1v/oct 
Synch In
FM in
PWM In

Knobs:
Course Tune
Fine Tune
FM amount
PWM Amount


** VCF 
Jacks:
3 * 1v/oct 
2 * Audio In
Audio Out

Knobs:
Frequency (I never use fine tune for filters)
Q
LowPass / Highpass x-fade

Switch:
Bandpass or Lowpass/Highpass

I had one of these same filters that I built before the ASM1 came out with the 
four separate outputs. Then the discussion came up about the SEMs and how they 
can x-fade between the LP and HP (with notch in the middle). This sounded cool, 
so I tried it and use it all the time - I'd never go back to four separate 
outs. This will require a few minor modifiations to the circuit, but no extra 
parts (except for the x-fade pot!) I will include detailed instructions with 
the faceplate.

I'd also like to add a knob for volume for one of the audio inputs, but I don't 
know if I can fit it...


** ADSRs (2)
Jacks:
Gate
Output

Knobs:
Attack
Decay
Sustain
Release


** VCAs(2)
Jacks:
+ In
- In
CV In
Out

Knobs:
Initial level


** LFO
Jacks:
Triangle out
Square Out

Knobs:
Rate


** Glide
Jacks:
In
Out

Knobs:
Rate


** Noise
Jacks:
White
Pink
LF


The following are things that will be on the faceplate and are NOT part of the 
ASM circuit board. The circuits, however, are TINY (I'm talking 2 8-pin IC's 
and about 8 resistors), they run off of the same power supply, and can fit onto 
a little protoboard or something... (or you could just sand the markings off of 
the faceplate!). Again I will include detailed instructions for building these 
extras (I'd even send an AD633 for the ring mod if our European friends can't 
find them).

** Ring Modulator
Jacks:
In 1
In 2
Out


** Inverting CV Scaler -
Scales CV from -cv to +cv or can be used with audio

Jacks:
In
Out

Knobs:
Scale


I'm not quite done with the layout, but it's close. The really nice thing is 
that I can send .gifs to anyone that interested, so they can see waht it'll 
look like before hand.

What do you guys think, is it worth it?

Anybody intrested?

I will be away for the weekend, so I'll reply on Monday.

- CList