ASM-1 boards received 2

[gstopp at fibermux.com]

     Gee guys thanks for the compliments - 
     
     About the VCA inputs:
     
     The (-) input on the VCA is just an extra input that happens to invert 
     the signal as it goes through the VCA. The VCA's on most synthesizers 
     have this capability but it's just not always brought out to a panel 
     jack. The Moog 902 for example has two input jacks, and the upper one 
     is (+) and the lower one is (-), and it's not even labelled on the 
     panel! In practice for audio signals there is not much difference 
     between the two (as long as you watch out for cancellation effects 
     with signals that originate from the same sources within a modular 
     system). For low frequency moduation applications, the (-) input can 
     be used to invert the signal whose amplitude is being controlled by 
     the VCA - therefore you can use the VCA as a voltage-controlled 
     inverter.
     
     Hey - I've been meaning to ask this for some time - has anybody got an 
     ASM-1 completely up and running? I had one running on the workbench in 
     the garage for a while, just hooked up in a test configuration, but I 
     had to take that apart when my wife and I bought a new house. Since 
     we're still unpacking, I still haven't had the chance to put together 
     a fully modular patchcord system yet. Any feedback? Any problems 
     finding parts, or assembling, or adjusting? I know I put a disclaimer 
     on my documentation that pretty much said "here you go, figure it 
     out", but I may have worded it a little too strong because I haven't 
     really seen any operational questions yet.
     
     If anybody has one up and running yet, maybe you can relate your 
     experiences to the list.
     
     BTW there's only 5 PCB's left. I anybody's planning on making a 
     quantity buy, let me know and I'll have another run of boards made.
     
     - Gene
     gstopp at fibermux.com


______________________________ Reply Separator _________________________________
Subject: ASM-1 boards received 2
Author:  niklasl at eritel.se (Niklas Lindberg) at ccrelayout
Date:    7/23/96 3:33 AM


Hi list,
     
Would like to second Kevin Dunniclife (and others) on the excellency 
of Gene Stopp's ASM-1 boards (and the included documentation)...
     
Gene has certainly produced a first class DIY-project here! 
     
I received my 2 boards on my vacation a week ago and has already 
bought parts for the PCBs (not panel pots, PS and HW).
     
It came down to a measly 270$... :-\ 
     
Well, not to bad considering this is Sweden and the fact that I 
bought larger amounts than needed of almost all components. 
(and I used MAT-02s, expensive!)
     
Building soon to commence !
     
BTW, There was a question on the list a while ago regarding how 
the - input featured in the ASM-1 VCA circuit should be used... 
Was this question ever answered ? (did I miss it?)
     
If so, could someone (Gene ?) please repeat for me ?
     
And once again: Thanks Gene!