Cgs synth

>1. On the Stooge panel, an led for the clock speed (I assume) of
>each ASR is provided, but I'm not sure where on the board to hook
>these up to, or is additional circuitry needed to drive them?

No idea here either! Possibly replace the 1N4148 connected to pin 6 of the
TL071 with a LED, and decrease the 100k pulldown connected to the LED to 1k.
Even better, use an emitter follower or transistor switch connected to pin 1
of the 4024.

>2. Since I made a dual ASR, that means two boards. Is it ok to
>jumper the power from one board to the other through the bus on the
>board, so I only have to use 1 power connector? Will the jumpered
>module suffer from lack of power for any reason?

No problems. Just link the two together

>3. I've been mainly playing around with just one of the ASRs, though
>I did try both of them out to make sure both function. I noticed
>that I have to retune the VCOs I'm driving with one ASR when I
>switched all the cables over to the other one. Is this normal, or
>could it have something to do with the fact that I didn't match all
>the resistors on either board?

Precisely why the resistors need to be matched :)

>I did use all 1% metal film
>resistors, though, which the text notes should be pretty close.

There is a compromise going on in my design. In order to increase the
input/output range of these, I have to compress then expand the operating
voltages. This means the core and output are more sensitive to smaller
variations, leakage etc.

>4. Is it a good idea to normalise the clock jacks and the input
>jacks between the two ASRs?

If you want to save patch cords, yes :)


Ken
_______________________________________________________________________
Ken Stone sasami@...
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>