Archive of the former Yahoo!Groups mailing list: Vintage Simmons Drums (UK) Users Group

Hello ,
I am an electronician and I love electronic drums.
I have some SIMMONS schematics but they are very bad quality.
I think it will be possible to build a SDS5 module ,it use standart ICs
(LM324 op amps,CA3080 otas...)
There is just the noise filter chip (SSM2044) that we could replace
with OTAs(CA3080,LM13700)to emulate this VCF.
I could redraw this schematic but I don't have caps and resitors
values.I also know that there is some little diferences betwen
bass,snare,tom channels.(for example modulation of the VCO for the
snare,no filter sweep for the snare,bend env...)
If I could have these modules, I will be able to redraw these
schematics accuratly with components values and,why not,to redraw a PCB
to clone this drum synth.
We could also try some mods!
Is there someone interested?
Perhaps someone who own a SDS5 can help me?
I think it could be very interesting!
I am always working on drawing schematics from my own SDS9,my
SDS1000,my PEARL DRX1 module(a very good sounding analog drum module!).
I have good qualitie schematics of TAMA TS305,TAM500 drum module(you
could find these on internet!)
I hope that there are some people interested.But sorry for my bad
english,I am French.
Thierry