pre-pared pcb's

[Debby and Gene Stopp]

Hi List,

Sorry to Tom - I might have lost your email... DSL was down for a week or
two last month....

Here's the info for the ASM-1:

The price is $60 US each, or $50 US each when you order four or more with
the same payment.

What you get is a circuit board, plus documentation with a parts list,
circuit description, and building hints.

The circuit board is professional quality - double-sided, soldermasked,
silkscreened, and drilled with plated-through holes. No components are
installed or provided. It is up to the builder to provide all circuit
components, power supply, enclosure, and front panel. All components should
be fairly easy to purchase in local stores or via mail-order.

The analog synthesizer circuits on the ASM-1 are as follows:

(2) VCO's - Saw/Pulse w/ PWM and hard sync, 1v/oct, tempco-type expo
converters
(1) VCF - exponential state variable with lowpass, bandpass, highpass, and
notch w/ resonance
(2) ADSR envelope generators
(2) VCA's - linear response, 3080-based, w/ inverting and non-inverting
inputs
(1) LFO - triangle/square
(1) Noise Generator - transistor-based with White, Pink, and Random outputs
(1) Glide buffer for portamento

The VCO's use the CA3140/LM311/FET design, which is the best that I've ever
come across in terms of frequency range and stability (with the right tempco
resistor, of course).

To order, send cash or a cheque cashable in a US bank to:

Gene Stopp
PO Box 4246
West Hills, CA
91308
USA

Shipping costs are included in the price, for either domestic or
international orders.

I visit my PO box every Saturday and ship out all orders by the next
Saturday. Domestic orders ship out first class (2-3 day delivery).
International orders ship out via air mail, which takes about a week.

Best Regards,

- Gene

----- Original Message -----
From: "tom wisdom" <twisdom at students.miami.edu>
To: <synth-diy at node12b53.a2000.nl>
Sent: Thursday, October 05, 2000 8:36 PM
Subject: pre-pared pcb's


> Hello all,
>
> For my senior Audio Engineering project at university, i'm working on an
> analog synth module based on a chaotic system. I of course want to build
> a full synth, for testing purposes and to have something substantial to
> show the review committee, and to keep for myself afterwards.
>
> the thing is, i don't plan on designing the rest of the modules as part
> of the project. for my purposes, there's not really much need to
> reinvent all those wheels. :) as long as i understand how they work (and
> for the most part i do, or can figure it out), it's alright with my
> advisor. i'm sure i can get the components to build something
> pre-designed like the ASM-1, and i have access to the environment in
> which to build and test it; the only big pain would be making the
> pcb(s), so i want to get that pre-made if i can.
>
> [the reason for my laziness? i'm also planning to model this module in
> software, which will take plenty of time if i do it right. also, i am a
> full-time student, with plenty to stress about besides this project. :)]
>
> so: i'm wondering if anyone has either the pcb's for the ASM-1 or those
> for a comparable project (with schematics, natch) available. (i can't
> afford the kits from MOTM et al.) i mailed Gene Stopp about ASM-1 pcb's
> some time ago, but have gotten no response. please let me know if any of
> you have leads on this.
>
> thanks much,
>
> tom wisdom
>
> t.wisdom at umiami.edu || | //+ \ \|| |
> http://jaguar.ir.miami.edu/~twisdom/
>
>